Every Speaker Reviewed by Audio Science Review

Audio Science Review is ranked #2 of 48 in the speaker-review source reliability ranking. The ranking weighs measurement quality, repeatability, useful comparisons, disclosure, and editorial independence; it is an assessment of the work used for speaker decisions, not a claim about personal character.

Reliability assessment: Very high confidence for home-speaker measurements. Audio Science Review publishes standardized Klippel NFS data and direct conclusions, including negative findings. The presentation can be technical and the listening portion is less controlled than the measurement system, so the graphs are the strongest evidence.

Prices on this page were last checked September 16, 2026 at 12:41 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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Small Size Powered Bookshelf Speakers
Medium Size Powered Bookshelf Speakers
Large Size Powered Bookshelf Speakers
Large Size Powered Floorstanding Speakers
Medium Size Bookshelf Speakers
Large Size Bookshelf Speakers
Large Size Floorstanding Speakers
In-Wall & In-Ceiling Speakers

Every speaker on this site Audio Science Review has reviewed, highest-rated first, with a direct link to each review below its card.

Small Size Powered Bookshelf Speakers

Ranked #1 of 23 in Small Size Powered Bookshelf Speakers - Audio Smile Little British Monitor: £529 per pair Audio Smile eBay

Pros: Among the strongest measured tonal performers in this size class: ASR’s Klippel data gives a 4.63 predicted preference score, or 7.38 with an ideal subwoofer. Low narrow-band response deviations on-axis and across the listening window support clear, relatively uncolored vocals and instruments. Broad horizontal coverage makes small changes of listening position less critical. Active DSP crossover and a very compact cabinet suit close desktop listening. Measured bass extension of 71.8Hz (-3dB).

Cons: Bass reaches -3dB at about 72Hz, so a subwoofer is important for the lowest notes. The measured response still spans 3.3dB from 300Hz to 5kHz; the small average-deviation statistic should not be mistaken for an almost perfectly flat response. Small drivers limit the intended application to nearfield listening, and the preference score does not establish maximum clean output.

Full Audio Smile Little British Monitor review and specifications →

Amplifier Power	100W total (50W LF, 50W HF, Class A/B)
Bass Extension (-10dB)	56.6Hz (measured, Audio Science Review)
Bass Extension (-3dB)	71.8Hz (measured, Audio Science Review)
Bluetooth Codecs	SBC, aptX HD
Country	United Kingdom
Crossover Frequency	1.5kHz
Dimensions	8.1"H x 4.7"W x 5.3"D (205 x 120 x 135 mm)
Drivers	0.75" wide band tweeter, 3" long throw mid woofer
Enclosure	ported
Frequency Response	58Hz-20kHz -6dB
Spinorama Preference Score	4.63
Spinorama Preference Score with Perfect Sub	7.38
Warranty	12 months
Weight	3.7 lbs (1.7 kg) (Master unit) / 3.1 lbs (1.4 kg) (Slave unit)

Check current price at Audio Smile (529 GBP/pair) →Search eBay for Audio Smile Little British Monitor →

Links
- Audio Smile LBM Official Page
Reviews, Comparisons and Sound Samples
- Sound on Sound: AudioSmile Little British Monitor
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Audio Smile Little British Monitor vs Adam Audio D3v

Ranked #2 of 23 in Small Size Powered Bookshelf Speakers - Genelec 8010A: $900 per pair B&H Photo Video eBay

Pros: ASR’s Klippel measurements support a neutral compact monitor: the response spans 2.5dB from 300Hz to 5kHz, with lower narrow-band variation in the listening window than directly on-axis. Spinorama predicts 4.10 standalone and 7.01 with an ideal subwoofer, making it a strong choice when bass is handled separately. Its measured balance provides firmer evidence for critical listening than a recorded sound demonstration alone. Measured bass extension of 74Hz (-3dB).

Cons: The measured -3dB point is about 78Hz, so deep bass is missing without a subwoofer. The small enclosure and woofer are better suited to close listening than room-filling levels; the preference score does not measure headroom. The D3V offers substantially deeper measured bass in a similarly compact format, while the Genelec’s premium price is harder to justify for casual desktop use.

Full Genelec 8010A review and specifications →

Amplifier Power	50W (25W woofer + 25W tweeter)
App	No
Bass Extension (-10dB)	67Hz (measured, Audio Science Review)
Bass Extension (-3dB)	74Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	7.7"H x 4.8"W x 4.5"D (195.6 x 121.9 x 114.3 mm)
Drivers	3" woofer, 0.75" metal dome tweeter
EQ	Yes (Bass tilt, Desk proximity)
Frequency Response	67 Hz-25 kHz (-6dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	96dB @ 1m (manufacturer specified)
Weight	3.3 lbs (1.5 kg)

Check current price at B&H Photo Video ($450) →Search eBay for Genelec 8010A →

Ranked #5 of 23 in Small Size Powered Bookshelf Speakers - IK Multimedia iLoud Micro Monitor: $299.99 per pair Amazon eBay

Pros: Unusually substantial bass for such a small desktop pair. The linked quasi-anechoic measurement review reports broad, reasonably consistent horizontal radiation and useful tolerance above the tweeter axis, helpful when the speakers sit below ear height. Its compact size and bass balance make it a practical close-listening alternative to small monitors that need a subwoofer. Measured bass extension of 55Hz (-3dB).

Cons: The existing review evidence indicates some bass emphasis and upper-treble rolloff rather than strict neutrality. Deep bass from tiny drivers does not establish loud-playback headroom; use these for close desktop listening, not as a substitute for larger room speakers.

Full IK Multimedia iLoud Micro Monitor review and specifications →

Amplifier Power	50W total (combined)
App	No
Bass Extension (-10dB)	45Hz (measured, Audio Science Review)
Bass Extension (-3dB)	55Hz (measured, Audio Science Review)
Bluetooth	Yes (A2DP)
Dimensions	7.1"H x 3.5"W x 5.3"D (180.3 x 88.9 x 134.6 mm)
Drivers	3" woofer, 0.75" silk dome tweeter
EQ	Yes (Bass/Treble switches, Desktop/Free field)
Frequency Response	55Hz - 20kHz (-3dB) (Manufacturer specified)
Inputs	RCA, Aux
Maximum SPL	96dB @ 1m (manufacturer specified)
Weight	2 lbs (0.9 kg)

Check current price at Amazon ($299.99) →Search eBay for IK Multimedia iLoud Micro Monitor →

Ranked #9 of 23 in Small Size Powered Bookshelf Speakers - Fostex PM0.3: $90 per pair Discontinued eBay

Pros: ASR’s Klippel measurements show relatively even midrange output, spanning 2.9dB from 300Hz to 5kHz. Its 5.66 predicted preference score with an ideal subwoofer is close to the Edifier MR3’s, so the small size does not rule out useful desktop sound when bass is handled separately. The review found that modest correction around the upper midrange could improve its balance. Measured bass extension of 82Hz (-3dB).

Cons: Very limited bass: the measured -3dB point is about 108Hz, and the standalone preference score falls to 2.23. Uneven off-axis response and substantial distortion when pushed prevent the respectable subwoofer-normalized score from translating into strong all-round performance. It belongs below the MR3 for standalone desktop use, and is unsuitable for loud playback. Discontinued.

Full Fostex PM0.3 review and specifications →

Amplifier Power	15W + 15W RMS
App	No
Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82Hz (measured, Audio Science Review)
DSP	No
Dimensions	7.3"H x 3.9"W x 5.1"D (185 x 100 x 130 mm) (per manufacturer)
Discontinued	Yes
Drivers	3" cone woofer, 0.75" soft dome tweeter (master/slave powered pair)
EQ	No
Frequency Response	110Hz - 20kHz +/-3dB (Manufacturer specified)
Spinorama Preference Score	2.23
Spinorama Preference Score with Perfect Sub	5.66
Weight	6.4 lbs (2.9 kg) pair

Search eBay for Fostex PM0.3 →

Links
- Official Fostex PM0.3 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Fostex PM0.3 vs Bowers & Wilkins Formation Flex
- Fostex PM0.3 vs Mackie CR3-X

Ranked #10 of 23 in Small Size Powered Bookshelf Speakers - Bowers & Wilkins Formation Flex: £898 per pair Bowers & Wilkins eBay

Pros: ASR’s Klippel data gives a 5.53 predicted preference score with an ideal subwoofer and broad horizontal coverage. Its wireless stereo-pair capability and network streaming can suit a minimalist system without conventional source cables. The measured tonal result is more credible than judging sound quality from the compact wireless format alone.

Cons: Standalone preference is only 2.80. The response rises toward the treble, and the -3dB point is about 95Hz, so lower bass is substantially reduced even though the preference model’s separate LFX metric is 62Hz. Those two bass metrics are not interchangeable. A stereo pair is costly, and the lack of conventional analog input limits system flexibility.

Full Bowers & Wilkins Formation Flex review and specifications →

Amplifier Power	100W each (2 x 50W)
Country	United Kingdom (design)
Dimensions	8.5H x 5.1W x 5.1D in
Drivers	1" decoupled double-dome tweeter, 4" woven-glass woofer
Enclosure	2-way active wireless
Spinorama Preference Score	2.80
Spinorama Preference Score with Perfect Sub	5.53
Weight	5.1 lbs (2.3 kg) each
Wireless	AirPlay 2, Spotify Connect, Bluetooth, Formation mesh

Check current price at Bowers & Wilkins (£449 each) →Search eBay for Bowers & Wilkins Formation Flex →

Links
- B&W Formation Flex Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Bowers & Wilkins Formation Flex vs Fostex PM0.3

Ranked #17 of 23 in Small Size Powered Bookshelf Speakers - Mackie CR3-X: $99.99 per pair Amazon eBay

Pros: Erin’s Klippel data predicts 1.95 standalone and 4.87 with an ideal subwoofer. The existing comparative review found less exaggerated tonal shaping and better sustained-output behavior than the original PreSonus E3.5 tested alongside it. Midrange distortion was reasonably controlled for inexpensive desktop speakers at moderate listening levels. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 96dB.

Cons: The response spans 4.4dB from 300Hz to 5kHz, with substantial narrow-band irregularities and bass rolloff reaching -3dB around 75Hz. Bass peaking and crossover-region changes with listening height prevent neutral monitoring. Limiting becomes intrusive above modest desktop levels, and there are no tone controls. Comparisons with the original E3.5 should not be treated as measurements of its second generation.

Full Mackie CR3-X review and specifications →

Amplifier Power	50W total (25W per speaker)
App	No
Bass Extension (-10dB)	70Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	80Hz (measured, Erin's Audio Corner)
Bluetooth	No
Dimensions	8.1"H x 5.5"W x 7.1"D (205.7 x 139.7 x 180.3 mm)
Drivers	3" woofer, 0.75" silk dome tweeter
EQ	No
Frequency Response	80 Hz-20 kHz (-3dB) (Manufacturer specified)
Headphone Output	Yes
Inputs	RCA, Aux
Maximum SPL	92dB @ 1m (manufacturer specified)
Outputs	1/8" headphone jack
Sensitivity	96dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score	1.95
Spinorama Preference Score with Perfect Sub	4.87
Weight	7.7 lbs (3.5 kg)

Check current price at Amazon ($99.99) →Search eBay for Mackie CR3-X →

Ranked #21 of 23 in Small Size Powered Bookshelf Speakers - Presonus Eris E3.5 2nd Gen: $99.99 per pair Amazon eBay

Pros: Rear-panel bass and treble controls allow broad correction for desk and wall placement. Erin’s second-generation Klippel measurements give a -3dB point around 69Hz, so the speaker has useful upper-bass reach for its size. Its adjustable balance is more flexible than a fixed-response budget desktop pair. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 87.4dB.

Cons: The stock response spans 7.2dB from 300Hz to 5kHz and has a strong rising trend of about 1.27dB per octave, emphasizing treble over the midrange. Preference scores of 1.15 standalone and 3.81 with an ideal subwoofer indicate major tonal problems beyond bass extension. EQ may help, but a subwoofer alone will not make it neutral. Output and port-modification results from reviews of the original E3.5 should not be assumed to apply to this second-generation model.

Full Presonus Eris E3.5 2nd Gen review and specifications →

Amplifier Power	50W total (25W per speaker)
App	No
Bass Extension (-10dB)	70Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	80Hz (measured, Erin's Audio Corner)
Bluetooth	No
Dimensions	8.3"H x 6"W x 5.5"D (210.8 x 152.4 x 139.7 mm)
Drivers	3.5" woofer, 1" silk dome tweeter
EQ	Yes (Acoustic space)
Frequency Response	80 Hz-20 kHz (-3dB) (Manufacturer specified)
Headphone Output	Yes
Inputs	RCA, 1/4" Balanced
Maximum SPL	95dB @ 1m (manufacturer specified)
Outputs	1/8" headphone jack
Sensitivity	87.4dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score	1.15
Spinorama Preference Score with Perfect Sub	3.81
Weight	8.6 lbs (3.9 kg)

Check current price at Amazon ($99.99) →Search eBay for Presonus Eris E3.5 2nd Gen →

Medium Size Powered Bookshelf Speakers

Ranked #2 of 65 in Medium Size Powered Bookshelf Speakers - Neumann KH120 MKII: $2000 per pair B&H Photo Video eBay

Pros: ASR’s Klippel data shows exceptional neutrality: only a 1.5dB span from 300Hz to 5kHz and low listening-window narrow-band deviation of 0.208. Scores of 5.75 standalone and 7.70 with an ideal subwoofer place it among the strongest measured options here. Bass reaches -3dB around 45Hz. The review reports very low distortion at 86dB/1m and clean performance outside deep bass at 96dB. Measured bass extension of 46Hz (-3dB).

Cons: Vertical crossover interference makes listening height important even though horizontal dispersion is well controlled. A small directivity irregularity remains around 2kHz. Distortion increases below about 50Hz at high output; a subwoofer can extend the system and reduce low-frequency demands. High price, and a flat anechoic response still needs suitable placement in the room.

Full Neumann KH120 MKII review and specifications →

Amplifier Power	245W (145W woofer + 100W tweeter)
App	Yes (MA 1 alignment)
Bass Extension (-10dB)	36Hz (measured, Audio Science Review)
Bass Extension (-3dB)	46Hz (measured, Audio Science Review)
Bluetooth	No
DSP	Yes
Dimensions	11.3"H x 7.2"W x 8.9"D (287 x 182.9 x 226.1 mm)
Drivers	5.25" woofer, 1" titanium fabric dome tweeter
EQ	Yes (via DSP)
Frequency Response	44Hz - 21kHz (±3dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	116.8dB @ 1m (manufacturer specified)
Spinorama Preference Score	5.75
Spinorama Preference Score with Perfect Sub	7.70
Weight	14.6 lbs (6.6 kg) each

Check current price at B&H Photo Video →Search eBay for Neumann KH120 MKII →

Links
- Official Neumann KH120 MKII Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #3 of 65 in Medium Size Powered Bookshelf Speakers - Genelec 8030C: $1,750 per pair B&H Photo Video eBay

Pros: ASR’s Klippel measurements show a 1.9dB response span from 300Hz to 5kHz and smooth listening-window behavior. Predicted preference scores of 5.35 standalone and 7.60 with an ideal subwoofer support its high position for tonal accuracy. Broad, controlled horizontal radiation makes the balance relatively stable across a desk, and bass reaches -3dB around 56Hz. Measured bass extension of 59Hz (-3dB).

Cons: A dip around 2-3kHz remains, and vertical placement is less forgiving than the horizontal coverage suggests. Deep-bass headroom is limited; isolated high-output measurements at higher frequencies do not describe full-band loudness. The review found demanding bass material could cause audible distress beyond moderate levels. A subwoofer is useful for full-range monitoring.

Full Genelec 8030C review and specifications →

Amplifier Power	100W (50W woofer + 50W tweeter)
App	No
Bass Extension (-10dB)	47Hz (measured, Audio Science Review)
Bass Extension (-3dB)	59Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	11.7"H x 7.4"W x 7"D (297.2 x 188 x 177.8 mm)
Drivers	5.1" woofer, 0.75" metal dome tweeter
EQ	Yes (Bass tilt, treble tilt, room response)
Frequency Response	54Hz - 20kHz (±2.5dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	110dB @ 1m (manufacturer specified)
Weight	11 lbs (5 kg) each

Check current price at B&H Photo Video ($875) →Search eBay for Genelec 8030C →

Links
- Official Genelec 8030C Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #4 of 65 in Medium Size Powered Bookshelf Speakers - Neumann KH80 DSP: $598.98 per pair Amazon B&H Photo Video eBay

Pros: ASR’s selected Klippel measurement has a 1.4dB midrange response span and virtually no overall on-axis tilt. Scores of 5.03 standalone and 7.39 with an ideal subwoofer indicate excellent tonal accuracy in a compact monitor. The waveguide and steep crossover provide useful control of reflected sound, while placement filters help compensate for a desk or nearby boundaries. Existing multitone testing supports good moderate-level clarity. Measured bass extension of 57Hz (-3dB), with a measured sensitivity of 91.9dB.

Cons: Bass reaches -3dB around 59Hz in this measurement, less deep than the KH120 II. Output protection and increasing multitone distortion limit loud listening, especially in the bass. Room reflections and listening distance can alter perceived treble balance despite its flat direct response. Calibration equipment adds to the cost; the preference score is not a measurement of maximum clean output.

Full Neumann KH80 DSP review and specifications →

Amplifier Power	140W (90W woofer + 50W tweeter)
App	Yes (MA 1 alignment)
Bass Extension (-10dB)	51Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	57Hz (measured, Erin's Audio Corner)
Bluetooth	No
DSP	Yes
Dimensions	13.6"H x 10.8"W x 9.6"D (345.4 x 274.3 x 243.8 mm)
Drivers	4.1" woofer, 1" fabric dome tweeter
EQ	Yes (via DSP)
Frequency Response	57 Hz - 25 kHz (+-3 dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	110.7dB @ 1m (manufacturer specified)
Sensitivity	91.9dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score	5.03
Spinorama Preference Score with Perfect Sub	7.39
Weight	9 lbs (4.1 kg) each

Check current price at Amazon ($598.98) →Check current price at B&H Photo Video ($599) →Search eBay for Neumann KH80 DSP →

Ranked #6 of 65 in Medium Size Powered Bookshelf Speakers - Dynaudio LYD 5: $1000 per pair B&H Photo Video eBay

Pros: ASR’s Klippel data is substantially stronger than a low ranking suggests: 4.72 standalone and 7.38 with an ideal subwoofer, with a 1.9dB span from 300Hz to 5kHz. Low listening-window narrow-band deviation of 0.242 supports relatively uncolored midrange reproduction. It is particularly competitive when used with a subwoofer rather than judged only by bass reach. Measured bass extension of 68Hz (-3dB).

Cons: Bass reaches -3dB around 72Hz, so it gives up low-frequency weight to deeper-reaching monitors. The existing review identifies a dip near 1.6kHz, upper-bass emphasis and uneven crossover-region dispersion. These issues and limited deep-bass capability keep it below the leading all-rounders despite its strong bass-normalized score. A subwoofer does not correct upper-frequency directivity errors.

Full Dynaudio LYD 5 review and specifications →

Amplifier Power	100W total (50W LF, 50W HF)
App	No
Bass Extension (-10dB)	50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	68Hz (measured, Audio Science Review)
DSP	No
Dimensions	10.2"H x 6.7"W x 8.3"D (260 x 170 x 211 mm)
Drivers	5" woofer, 28mm soft dome tweeter
EQ	No
Frequency Response	50Hz - 21kHz (Manufacturer specified)
Weight	11.9 lbs (5.4 kg) each

Check current price at B&H Photo Video →Search eBay for Dynaudio LYD 5 →

Links
- Official Dynaudio LYD 5 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #7 of 65 in Medium Size Powered Bookshelf Speakers - Genelec 8330A: $2,250 per pair B&H Photo Video eBay

Pros: ASR’s measurements give a 2.3dB midrange response span and a -3dB point around 56Hz. Scores of 4.78 standalone and 7.03 with an ideal subwoofer indicate solid tonal accuracy, while deeper bass than the 8320A helps without a sub. GLM calibration, the waveguide and rounded aluminum enclosure make it a practical compact studio system. Measured bass extension of 55.7Hz (-3dB).

Cons: The listening-window response has more local variation than the 8030C or KH80 in the selected measurements, so DSP capability should not be mistaken for superior native neutrality. GLM calibration hardware costs extra. Small-driver bass headroom remains finite, and neither the modeled ideal-subwoofer score nor the fitted bass Q establishes maximum output or freedom from resonances.

Full Genelec 8330A review and specifications →

Amplifier Power	100W total (50W woofer, 50W tweeter, Class D)
Bass Extension (-10dB)	44.9Hz (measured, Audio Science Review)
Bass Extension (-3dB)	55.7Hz (measured, Audio Science Review)
Country	Finland
Dimensions	11.8"H x 7.4"W x 7"D (299 x 189 x 178 mm)
Drivers	0.75" metal dome tweeter, 5.1" cone woofer
Enclosure	ported
Frequency Response	45Hz-23kHz -6dB
Maximum SPL	104dB (manufacturer specified)
Spinorama Preference Score	4.78
Spinorama Preference Score with Perfect Sub	7.03
Warranty	2 years (5 with product registration)
Weight	11.2 lbs (5.1 kg) each

Check current price at B&H Photo Video ($1,125) →Search eBay for Genelec 8330A →

Links
- Genelec 8330A Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #8 of 65 in Medium Size Powered Bookshelf Speakers - Genelec 8320A: $1,700 per pair B&H Photo Video eBay

Pros: A measured 1.6dB span from 300Hz to 5kHz and preference scores of 4.70 standalone and 7.22 with an ideal subwoofer support accurate close-range monitoring. The waveguide helps control the balance between direct and reflected sound. GLM room calibration is useful for matching levels and placement in a compact setup. Measured bass extension of 67.4Hz (-3dB).

Cons: The -3dB point is about 67Hz, making a subwoofer important for lower bass and giving the larger 8330A a practical advantage without one. Calibration hardware is sold separately. The small woofer limits its intended listening distance and bass output; a favorable response-fit parameter is not evidence that it has uniquely well-damped bass or unusually high headroom.

Full Genelec 8320A review and specifications →

Amplifier Power	100W total (50W woofer, 50W tweeter, Class D)
Bass Extension (-10dB)	53.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	67.4Hz (measured, Audio Science Review)
Country	Finland
Dimensions	9.5"H x 5.9"W x 5.6"D (242 x 151 x 142 mm)
Drivers	0.75" metal dome tweeter, 4.1" cone woofer
Enclosure	ported
Frequency Response	55Hz-23kHz -6dB
Maximum SPL	Peak 107dB (manufacturer specified)
Spinorama Preference Score	4.70
Spinorama Preference Score with Perfect Sub	7.22
Warranty	2 years (5 with product registration)
Weight	7.1 lbs (3.2 kg) each

Check current price at B&H Photo Video ($850 each) →Search eBay for Genelec 8320A →

Links
- Genelec 8320A Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: Genelec 8320A Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #10 of 65 in Medium Size Powered Bookshelf Speakers - Topping MA4: $400 per pair Audiophonics eBay

Pros: The selected manufacturer-supplied Klippel data shows a 1.6dB span from 300Hz to 5kHz, bass reaching -3dB around 50Hz, and preference scores of 4.78 standalone and 6.98 with an ideal subwoofer. That is strong measured tonal performance for a compact monitor. Its analog crossover and balanced XLR connection suit an existing audio interface. Measured bass extension of 49.8Hz (-3dB).

Cons: The native listening-window response is not as smooth as the leading Genelec and Neumann measurements. No USB, Bluetooth or built-in room-correction DSP: source control and correction need external equipment. Bass extension alone does not establish clean output capability.

Full Topping MA4 review and specifications →

Amplifier Power	75W total (50W woofer, 25W tweeter, Class D)
Bass Extension (-10dB)	42.9Hz (measured, spinorama.org vendor data)
Bass Extension (-3dB)	49.8Hz (measured, spinorama.org vendor data)
Country	China
Crossover Frequency	1.3kHz
Dimensions	10"H x 5.5"W x 11.3"D (255 x 140 x 288 mm)
Drivers	1" soft dome tweeter with waveguide, 4" paper cone woofer
Enclosure	ported
Frequency Response	49Hz-20kHz +/-3dB
Maximum SPL	105dB @ 1m (manufacturer specified)
Sensitivity	92dB
Spinorama Preference Score	4.78
Spinorama Preference Score with Perfect Sub	6.98
Warranty	1-2 years (varies by region)
Weight	8.3 lbs (3.78 kg) each

Check current price at Audiophonics (449 EUR/pair) →Search eBay for Topping MA4 →

Links
- Topping MA4 Product Gallery
Reviews, Comparisons and Sound Samples
- Audio Science Review: Topping MA4 Review More from Audio Science Review →
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #11 of 65 in Medium Size Powered Bookshelf Speakers - Genelec 8020D: $1,390 per pair B&H Photo Video eBay

Pros: A compact waveguided monitor with balanced XLR input and placement filters, well suited to a small studio desk. Measured bass extension of 56Hz (-3dB).

Cons: Small size limits deep-bass reach and headroom. It lacks the GLM calibration of the SAM models, and the price is substantial for a compact analog-input monitor.

Full Genelec 8020D review and specifications →

Amplifier Power	100W (50W woofer + 50W tweeter)
App	No
Bass Extension (-10dB)	50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	56Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	9.5"H x 5.8"W x 5.6"D (241.3 x 147.3 x 142.2 mm)
Drivers	4.1" woofer, 0.75" metal dome tweeter
EQ	Yes (Bass tilt, desk proximity)
Frequency Response	56 Hz - 25 kHz (-6 dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	103dB @ 1m (manufacturer specified)
Weight	7.1 lbs (3.2 kg) each

Check current price at B&H Photo Video ($695) →Search eBay for Genelec 8020D →

Ranked #13 of 65 in Medium Size Powered Bookshelf Speakers - JBL 305P MKII: $319.00 per pair Amazon eBay

Pros: Erin’s Klippel data gives 4.47 standalone and 6.61 with an ideal subwoofer, with bass reaching -3dB around 51Hz. Broad horizontal coverage and reasonably smooth reflected sound support stable imaging across a desk. The existing review reports effective limiting and little sustained thermal compression, making it a strong budget-monitor option rather than just a speaker with a promising frequency curve. Measured bass extension of 50Hz (-3dB), with a measured sensitivity of 91.1dB.

Cons: The 3.3dB midrange span and rising response show it is not perfectly neutral. A port-related feature around 1.6kHz and some excess treble can be audible; the review recommends the treble-trim switch. Vertical crossover interference makes ear height important. Amplifier hiss may matter in very quiet nearfield use, and rear-port placement needs room-boundary adjustment.

Full JBL 305P MKII review and specifications →

Amplifier Power	81w Per Speaker
App	No
Bass Extension (-10dB)	43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	50Hz (measured, Erin's Audio Corner)
Bluetooth	No
Dimensions	11.7"H x 7.3"W x 9.1"D (297.2 x 185.4 x 231.1 mm)
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	49 Hz - 20 kHz (+-3 dB) (Manufacturer specified)
Inputs	XLR, TRS
Sensitivity	91.1dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score	4.47
Spinorama Preference Score with Perfect Sub	6.61
Weight	10.4 lbs (4.7 kg) each

Check current price at Amazon ($319.00) →Search eBay for JBL 305P MKII →

Ranked #17 of 65 in Medium Size Powered Bookshelf Speakers - Sigberg Audio SBS Gen 2: $18,043.20 for the full system (2 speakers + 2 dedicated subwoofers, built to order) Sigberg Audio eBay

Pros: The measured speaker-and-subwoofer system has a 1.7dB midrange response span and a 6.74 ideal-subwoofer preference score, supporting useful tonal accuracy above the bass region. The measured system reaches -3dB around 34Hz. Onboard parametric EQ and dedicated amplification provide flexible integration for a complete high-performance setup. Measured bass extension of 24Hz (-3dB).

Cons: The measured system explicitly includes a subwoofer: its 5.78 full-system score and bass extension must not be attributed to the bookshelf speaker alone. It is not directly equivalent to the standalone-monitor tests around it. The complete system is expensive and occupies more space than the main speakers suggest; the score alone does not prove superior output or room performance.

Full Sigberg Audio SBS Gen 2 review and specifications →

Amplifier Power	350W per speaker
App	No
Bass Extension (-3dB)	24Hz (measured, spinorama.org, with companion subwoofer)
Bluetooth	No
Country	Norway
DSP	Yes
Dimensions	16.1"H x 7.5"W x 9.1"D (410 x 190 x 230 mm)
Drivers	5.5" midbass, 5.5" coaxial mid/tweeter with 1" silk dome
EQ	Yes (9-band parametric, factory presets)
Enclosure	sealed
Inputs	XLR, RCA, Optical, Coaxial/SPDIF, AES
Maximum SPL	116dB (manufacturer specified)
Measurement Source	Manufacturer
Spinorama Preference Score	5.78
Spinorama Preference Score with Perfect Sub	6.74
Weight	20.9 lbs (9.5 kg) each

Check current price at Sigberg Audio →Search eBay for Sigberg Audio SBS Gen 2 →

Links
- Sigberg Audio SBS Gen 2 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review: New Development Thread - Sigberg Audio SBS Generation 2 More from Audio Science Review →
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #18 of 65 in Medium Size Powered Bookshelf Speakers - HEDD Type 05 A-CORE: $714 per pair B&H Photo Video eBay

Pros: ASR’s Klippel data shows useful bass reach for this size, with -3dB around 44Hz. Preference scores of 4.47 standalone and 6.35 with an ideal subwoofer support it as a balanced all-round option. The AMT tweeter and analog signal path appeal to users who want a studio monitor without digital conversion or firmware dependence. Measured bass extension of 43.9Hz (-3dB).

Cons: The 2.7dB midrange span and listening-window narrow-band deviation of 0.404 trail the most linear monitors here. The response rises modestly toward the treble. The analog-only design does not provide built-in room correction or digital inputs, and published amplification power should not be read as a measured clean-output rating.

Full HEDD Type 05 A-CORE review and specifications →

Amplifier Power	200W total, bi-amped (2x100W ICEpower Class D)
App	None (analog-only, no DSP)
Bass Extension (-10dB)	37.1Hz (measured, spinorama.org)
Bass Extension (-3dB)	43.9Hz (measured, spinorama.org)
Bluetooth	No
Dimensions	12.1" x 7.1" x 9.6" (308 x 180 x 245 mm) each
Drivers	AMT (Air Motion Transformer) tweeter, 5" Honeycomb-compound woofer
EQ	Yes, analog High/Low shelving, ±6dB continuous
Frequency Response	43Hz - 50kHz
Inputs	RCA unbalanced, XLR/TRS combo balanced
Maximum SPL	112dB per pair at 1m (manufacturer specified)
Spinorama Preference Score	4.47
Spinorama Preference Score with Perfect Sub	6.35
Weight	13.7 lbs (6.2 kg) each

Check current price at B&H Photo Video ($699) →Search eBay for HEDD Type 05 A-CORE →

Links
- Official HEDD Type 05 A-CORE Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #21 of 65 in Medium Size Powered Bookshelf Speakers - IK Multimedia iLoud MTM: $800 per pair Discontinued Amazon eBay

Pros: ASR’s measurements of the original MTM give scores of 4.07 standalone and 6.26 with an ideal subwoofer, a 2.4dB midrange response span and a -3dB point around 53Hz. The small cabinet, balanced input and calibration capability make it useful for close listening where larger monitors would be impractical. Measured bass extension of 50Hz (-3dB).

Cons: The MTM arrangement makes listening height and orientation important, while bass below the low-50Hz region still needs support. The native response is not as smooth as the best compact reference monitors. Exact compression ceilings and correction examples from the MKII review should not be assigned to this original version; its score describes tonal response, not maximum clean volume. Discontinued.

Full IK Multimedia iLoud MTM review and specifications →

Amplifier Power	100w Per Speaker
App	No
Bass Extension (-10dB)	40Hz (measured, Audio Science Review)
Bass Extension (-3dB)	50Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	10.4"H x 5.1"W x 6.3"D (264.2 x 129.5 x 160 mm)
Discontinued	Yes
Drivers	2x 3.5" (89mm) woofers
EQ	Yes (Room adjustment)
Frequency Response	50 Hz - 24 kHz (-3dB) (Manufacturer specified)
Inputs	XLR
Weight	5.5 lbs (2.5 kg)

Check current price at Amazon ($800) →Search eBay for IK Multimedia iLoud MTM →

Ranked #22 of 65 in Medium Size Powered Bookshelf Speakers - Sigberg Audio SBS.1: Discontinued eBay

Pros: The 6.26 preference score with an ideal subwoofer is the relevant tonal comparison for this subwoofer-dependent design. Manufacturer-supplied data shows a 2.0dB midrange response span, and onboard parametric EQ offers substantial system-tuning flexibility. It is intended as a main speaker in a complete system rather than a conventional full-range desktop pair.

Cons: The measured -3dB point is around 97Hz and the standalone score is 2.97, reflecting the requirement for a companion subwoofer rather than an unexpectedly weak full-range design. It is discontinued, so condition and system compatibility matter when buying used. Discontinued.

Full Sigberg Audio SBS.1 review and specifications →

Amplifier Power	350W per speaker
App	No
Bass Extension (-3dB)	18Hz (manufacturer, with companion subwoofers)
Bluetooth	No
Country	Norway
DSP	Yes
Dimensions	16.1"H x 7.5"W x 9.1"D (410 x 190 x 230 mm)
Discontinued	Yes
Drivers	2x 5.5" midbass, 1" coaxial silk dome tweeter
EQ	Yes (9-band parametric, factory presets)
Enclosure	sealed
Inputs	XLR, RCA, Optical, Coaxial/SPDIF, AES
Maximum SPL	116dB (manufacturer specified)
Measurement Source	Manufacturer
Spinorama Preference Score	2.97
Spinorama Preference Score with Perfect Sub	6.26
Weight	20.9 lbs (9.5 kg) each

Search eBay for Sigberg Audio SBS.1 →

Ranked #25 of 65 in Medium Size Powered Bookshelf Speakers - Airpulse A100: $999.99 per pair Amazon B&H Photo Video eBay

Pros: ASR’s Klippel data gives a 2.9dB midrange span and scores of 3.66 standalone and 6.18 with an ideal subwoofer. The ribbon tweeter and five-inch woofer provide a distinctive compact powered system, with remote control and a subwoofer output simplifying everyday use. Measured bass extension of 63.0Hz (-3dB).

Cons: Bass reaches -3dB around 63Hz, so lower notes need a subwoofer for full weight. Listening-window narrow-band deviation of 0.419 shows more local tonal variation than the leading monitors. Rear tone controls are less flexible than parametric EQ or room correction. Neither the ribbon tweeter nor a directivity-index summary establishes uniquely wide or perfectly controlled dispersion.

Full Airpulse A100 review and specifications →

Amplifier Power	100W total (40W+40W woofer, 10W+10W tweeter)
App	None (physical bass/treble knobs, IR remote)
Bass Extension (-10dB)	53.2Hz (measured, spinorama.org)
Bass Extension (-3dB)	63.0Hz (measured, spinorama.org)
Bluetooth	Yes (SBC, aptX)
Bluetooth Codecs	SBC, aptX
Dimensions	6.3" x 11.1" x 10" (160 x 283 x 255 mm) each
Drivers	Horn-loaded ribbon tweeter, 5" hard-anodized aluminum cone woofer
EQ	Yes, rear-panel bass/treble trim knobs
Frequency Response	52Hz - 40kHz
Inputs	RCA (aux), USB, optical, coaxial, Bluetooth aptX
Spinorama Preference Score	3.66
Spinorama Preference Score with Perfect Sub	6.18
Weight	24.3 lbs (11 kg) each

Check current price at Amazon ($999.99) →Check current price at B&H Photo Video ($999.99) →Search eBay for Airpulse A100 →

Links
- Official Airpulse A100 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #27 of 65 in Medium Size Powered Bookshelf Speakers - Audioengine A5+ Classic: $399.00 per pair Amazon B&H Photo Video eBay

Pros: ASR’s A5+ Powered measurements give 3.68 standalone and 6.15 with an ideal subwoofer, with a 2.7dB midrange span. The analog powered pair is straightforward to use without an external amplifier. The measured result supports a more capable tonal balance than its former low position suggested. Measured bass extension of 68Hz (-3dB).

Cons: The measured -3dB point is around 69Hz, and the upper-bass recession can reduce body in voices and instruments. The existing review reports crossover-region directivity errors and a distortion feature around 800-900Hz. The score does not make it a reference monitor, and adding a subwoofer cannot correct those midrange and off-axis issues.

Full Audioengine A5+ Classic review and specifications →

Amplifier Power	50W RMS / 75W peak
App	No
Bass Extension (-10dB)	50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	68Hz (measured, Audio Science Review)
DSP	No
Dimensions	10.9"H x 7.2"W x 9.7"D (276.2 x 182.6 x 247.6 mm)
Drivers	5" Kevlar woofer, 0.75" silk dome tweeter
EQ	No
Frequency Response	50Hz - 22kHz (+/-1.5dB) (Manufacturer specified)
Outputs	RCA variable output (subwoofer)
Spinorama Preference Score	3.68
Spinorama Preference Score with Perfect Sub	6.15
Subwoofer Output	Yes
Weight	15.4 lbs (7 kg) (left/powered), 9.7 lbs (4.4 kg) (right)

Check current price at Amazon ($399.00) →Check current price at B&H Photo Video ($469) →Search eBay for Audioengine A5+ Classic →

Ranked #28 of 65 in Medium Size Powered Bookshelf Speakers - Adam Audio T5V: $460 per pair Amazon eBay

Pros: ASR’s data shows a small 2.0dB span from 300Hz to 5kHz, a -3dB point around 59Hz, and scores of 3.74 standalone and 6.11 with an ideal subwoofer. It offers useful bass and midrange performance for an affordable studio monitor. Rear tonal trims allow broad placement adjustment. Measured bass extension of 78Hz (-3dB).

Cons: The response rises toward the treble by about 0.56dB per octave, so the small midrange span should not be mistaken for flat full-band response. Upper-frequency unevenness remains, and a shelving control cannot precisely remove every peak. The existing review finds distortion reasonable for the price rather than reference-class; deeper bass and demanding levels still call for more capable hardware.

Full Adam Audio T5V review and specifications →

Amplifier Power	70w Per Speaker
App	No
Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	11.7"H x 7"W x 11.7"D (297.2 x 177.8 x 297.2 mm)
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	58Hz - 24kHz (-3dB) (Manufacturer specified)
Inputs	XLR, RCA
Spinorama Preference Score	3.74
Spinorama Preference Score with Perfect Sub	6.11
Weight	12.6 lbs (5.7 kg) each

Check current price at Amazon ($230.00) →Search eBay for Adam Audio T5V →

Ranked #29 of 65 in Medium Size Powered Bookshelf Speakers - Kanto YU6: $579.99 per pair Amazon eBay

Pros: ASR’s measurements give preference scores of 3.37 standalone and 5.98 with an ideal subwoofer, stronger than several smaller lifestyle pairs. Phono input, optical connections and remote control make it useful for a simple multi-source system. The overall response trend is close to level rather than strongly tilted.

Cons: Local response variation remains despite the mild overall tilt: the midrange span is 3.8dB and listening-window narrow-band deviation is 0.419. Bass reaches -3dB around 75Hz, so the preference model’s 58Hz LFX value should not be quoted as full-level bass extension. A subwoofer improves bandwidth but does not remove tonal irregularities.

Full Kanto YU6 review and specifications →

Amplifier Power	200W peak Class D (100W RMS total)
Bluetooth Codecs	SBC, aptX
Country	Canada (design)
Dimensions	6.9W x 8.1D x 10.7H in each
Drivers	1" silk dome tweeter, 5.25" Kevlar woofer
Enclosure	2-way active, MDF cabinet
Inputs	Bluetooth aptX, RCA phono preamp, 2x optical
Outputs	Subwoofer
Spinorama Preference Score	3.37
Spinorama Preference Score with Perfect Sub	5.98
Subwoofer Output	Yes
Weight	11.5 lbs (5.2 kg) (active), 8.6 lbs (3.9 kg) (passive)

Check current price at Amazon ($579.99) →Search eBay for Kanto YU6 →

Links
- Kanto YU6 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #31 of 65 in Medium Size Powered Bookshelf Speakers - JBL 705P: $1998 per pair B&H Photo Video eBay

Pros: ASR’s data gives bass reaching -3dB around 48Hz and a 5.80 ideal-subwoofer preference score. Its waveguided compression driver and dedicated amplification are suited to studio use, and the broad response trend is close to level. It has useful low-frequency reach for a five-inch monitor. Measured bass extension of 80Hz (-3dB).

Cons: The standalone score is 3.79, and a localized cancellation near 750Hz contributes to the large 7.8dB midrange response span. A crossover-region rise also prevents reference-flat reproduction. An average flat trend does not erase these features, and amplifier wattage is not a measured clean-SPL rating. The data does not support calling it uniformly flat simply because it shares technology with larger JBL models.

Full JBL 705P review and specifications →

Amplifier Power	500W total (250W woofer, 250W tweeter)
App	No
Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
DSP	No
Dimensions	10.6"H x 5.9"W x 10.8"D (268 x 151 x 274 mm)
Drivers	5" woofer, 2409H 1" compression driver
EQ	No
Frequency Response	39Hz - 36kHz (Manufacturer specified)
Spinorama Preference Score	3.79
Spinorama Preference Score with Perfect Sub	5.80
Weight	12.6 lbs (5.7 kg) each

Check current price at B&H Photo Video →Search eBay for JBL 705P →

Links
- Official JBL 705P Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #39 of 65 in Medium Size Powered Bookshelf Speakers - Kanto YU: $349.99 per pair Kanto Audio eBay

Pros: RCA and Bluetooth inputs, remote control, tone adjustment and a subwoofer output make this compact pair simple to use. ASR’s measurements show a 2.9dB midrange span and a 5.51 preference score with an ideal subwoofer, supporting moderate desktop use with bass assistance.

Cons: Standalone preference is 2.59 and the -3dB point is about 85Hz, so it lacks low-bass weight. The response trends upward toward the treble and retains local irregularities across the listening window. A subwoofer adds bandwidth but does not make the speaker neutral. Connectivity is basic compared with models offering USB, optical or HDMI.

Full Kanto YU review and specifications →

Amplifier Power	70W RMS / 140W peak per pair
Bluetooth Codecs	SBC, aptX
Country	Canada (design)
Dimensions	8.7H x 5.5W x 7.5D in
Drivers	1" silk-dome tweeter, 4" Kevlar woofer
Enclosure	2-way powered, rear-ported MDF
Inputs	RCA and Bluetooth 4.2 aptX
Outputs	Subwoofer
Spinorama Preference Score	2.59
Spinorama Preference Score with Perfect Sub	5.51
Subwoofer Output	Yes
Weight	6.2 lbs (2.8 kg) active, 5.3 lbs (2.4 kg) passive

Check current price at Kanto Audio ($349.99/pair) →Search eBay for Kanto YU →

Links
- Kanto YU Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #40 of 65 in Medium Size Powered Bookshelf Speakers - KRK Rokit 5 G4: $337 per pair Discontinued eBay

Pros: ASR’s data gives -3dB bass around 56Hz and scores of 3.06 standalone and 5.42 with an ideal subwoofer. The waveguide provides useful horizontal directivity control, while onboard adjustments help tailor broad balance. The existing review reports low distortion at 86dB and low audible hiss. Measured bass extension of 78Hz (-3dB).

Cons: The 3.6dB midrange span and listening-window narrow-band deviation of 0.502 show that native response is not reference-flat. A port-region resonance and other tonal irregularities remain. Its deeper bass does not establish greater detail or mixing accuracy than another monitor. EQ can help, but the unequalized measurements determine the starting recommendation. Discontinued.

Full KRK Rokit 5 G4 review and specifications →

Amplifier Power	55w Per Speaker
App	No
Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	11.2"H x 7.5"W x 9.5"D (284.5 x 190.5 x 241.3 mm)
Discontinued	Yes
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	58Hz - 24kHz (-3dB) (Manufacturer specified)
Inputs	TRS/XLR
Spinorama Preference Score	3.06
Spinorama Preference Score with Perfect Sub	5.42
Weight	10.8 lbs (4.9 kg) each

Search eBay for KRK Rokit 5 G4 →

Ranked #41 of 65 in Medium Size Powered Bookshelf Speakers - Yamaha HS5: $298.98 per pair Amazon eBay

Pros: ASR found reasonably smooth early-reflection directivity, which makes broad EQ correction more promising than on speakers whose off-axis response changes abruptly. Balanced inputs and placement controls suit studio use. The measured preference scores are 2.91 standalone and 5.52 with an ideal subwoofer. Measured bass extension of 88Hz (-3dB).

Cons: The measurements do not support describing it as very neutral: excess midrange and reduced lower-midrange/upper-bass weight produce a bass-light balance. The 300Hz-5kHz span is 4.3dB. Its automated -3dB crossing is affected by response shape, so it should not be treated as a simple bass-cutoff specification. A subwoofer adds low bass but does not fix the elevated midrange.

Full Yamaha HS5 review and specifications →

Amplifier Power	45w Per Speaker
App	No
Bass Extension (-10dB)	68Hz (measured, Audio Science Review)
Bass Extension (-3dB)	88Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	11.2"H x 6.7"W x 8.7"D (284.5 x 170.2 x 221 mm)
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	58Hz - 24kHz (-3dB) (Manufacturer specified)
Inputs	XLR
Spinorama Preference Score	2.91
Spinorama Preference Score with Perfect Sub	5.52
Weight	12.1 lbs (5.5 kg) each

Check current price at Amazon ($298.98) →Search eBay for Yamaha HS5 →

Ranked #42 of 65 in Medium Size Powered Bookshelf Speakers - Adam Audio A4V: $1,199.98 per pair B&H Photo Video eBay

Pros: Compact monitor with onboard DSP, placement controls and room-correction integration. ASR’s Klippel data gives a -3dB point around 59Hz and preference scores of 3.02 standalone and 5.43 with an ideal subwoofer. Its adjustment facilities are useful when placement or tonal correction is needed.

Cons: A small average-deviation figure hides a major localized response irregularity: the selected measurement spans 10.8dB from 300Hz to 5kHz, and listening-window narrow-band deviation is 0.547. The native response should therefore not be called smoothly neutral. Correction potential is not the same as stock performance, and analog audio inputs mean a separate interface is needed for USB sources.

Full Adam Audio A4V review and specifications →

Amplifier Power	130W RMS each
Dimensions	10.6H x 6.2W x 8.7D in
Drivers	X-ART folded-ribbon tweeter, 4" MLM woofer
Enclosure	2-way active, dual front ports
Inputs	XLR and RCA; Ethernet for control
Spinorama Preference Score	3.02
Spinorama Preference Score with Perfect Sub	5.43
Weight	12.8 lbs (5.8 kg) each

Check current price at B&H Photo Video ($599.99 each) →Search eBay for Adam Audio A4V →

Links
- Adam Audio A4V Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #44 of 65 in Medium Size Powered Bookshelf Speakers - Presonus Eris E5 XT: $239.98 per pair Amazon eBay

Pros: ASR’s measurements show reasonably consistent directivity through the crossover, so EQ changes are more likely to benefit both direct and reflected sound. Bass reaches -3dB around 56Hz. A standalone preference score of 2.88 rises to 5.30 with an ideal subwoofer, indicating useful bass reach but only moderate native tonal performance. Measured bass extension of 85Hz (-3dB).

Cons: The response has bass and treble emphasis with a recessed crossover region; smooth directivity carries that imbalance into room reflections rather than fixing it. Existing distortion testing shows problems across a broad range when pushed to 96dB. Tone correction and moderate levels help, but it is not a reference-flat monitor out of the box.

Full Presonus Eris E5 XT review and specifications →

Amplifier Power	80w Per Speaker
App	No
Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	10.2"H x 7"W x 7.7"D (259.1 x 177.8 x 195.6 mm)
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	53Hz - 22kHz (Manufacturer specified)
Inputs	TRS, XLR, RCA
Spinorama Preference Score	2.88
Spinorama Preference Score with Perfect Sub	5.30
Weight	10.1 lbs (4.6 kg) each

Check current price at Amazon ($119.99) →Search eBay for Presonus Eris E5 XT →

Ranked #46 of 65 in Medium Size Powered Bookshelf Speakers - Edifier MR4: $169.99 per pair Amazon eBay

Pros: Erin’s data supports a useful budget desktop monitor: a 3.0dB midrange span, little overall on-axis tilt, and preference scores of 2.48 standalone and 5.23 with an ideal subwoofer. Balanced TRS inputs and tone controls are practical at its price, and its response is more balanced than the measured R1280T. Measured bass extension of 109Hz (-3dB), with a measured sensitivity of 78dB.

Cons: Bass reaches -3dB around 79Hz, so deep extension should not be inferred from the overall flat trend. Listening-window response still has local irregularities, including lower-treble unevenness. The existing review reports rapidly increasing distortion and audible distress when pushed well above moderate desktop levels. No Bluetooth, and adding a subwoofer does not cure every output or tonal limitation.

Full Edifier MR4 review and specifications →

Amplifier Power	42w RMS Per Speaker
App	No
Bass Extension (-10dB)	58Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	109Hz (measured, Erin's Audio Corner)
Bluetooth	No
Dimensions	9"H x 5.5"W x 7.6"D (228.6 x 139.7 x 193 mm)
Drivers	4" (102mm) woofer
EQ	No
Frequency Response	60 Hz-20 kHz (-3dB) (Manufacturer specified)
Headphone Output	Yes
Inputs	TRS Balanced, RCA, Aux
Outputs	Headphone
Sensitivity	78dB (measured at 0.3V/1m, Erin's Audio Corner)
Spinorama Preference Score	2.48
Spinorama Preference Score with Perfect Sub	5.23
Weight	9.9 lbs (4.5 kg)

Check current price at Amazon ($169.99) →Search eBay for Edifier MR4 →

Ranked #47 of 65 in Medium Size Powered Bookshelf Speakers - KRK Classic 5: $319.99 per pair Amazon eBay

Pros: ASR’s Klippel data gives -3dB bass around 60Hz and a 5.18 preference score with an ideal subwoofer. Broad tonal correction can improve it, so it may be useful to someone willing to measure and EQ a basic studio setup. Measured bass extension of 60.1Hz (-3dB).

Cons: The native standalone score is 2.66 and the midrange span is a large 6.5dB. Excess treble and crossover/directivity errors keep it from being neutral out of the box, while low-bass distortion limits loud playback. Modeled EQ scores are not stock performance and do not demonstrate corrected distortion or dispersion.

Full KRK Classic 5 review and specifications →

Amplifier Power	50w RMS Per Speaker
App	No
Bass Extension (-3dB)	60.1Hz (Spinorama/Audio Science Review)
Bass Extension (-6dB)	54.2Hz (Spinorama/Audio Science Review)
Bluetooth	No
Dimensions	9.7"H x 7.4"W x 11.2"D (246.4 x 188 x 284.5 mm)
Drivers	5" (127mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	56Hz-30KHz (+-3dB) (Manufacturer specified)
Inputs	RCA, TRS, XLR
Spinorama Preference Score	2.71
Spinorama Preference Score with Perfect Sub	5.22
Weight	12.9 lbs (5.87 kg)

Check current price at Amazon ($319.99) →Search eBay for KRK Classic 5 →

Ranked #59 of 65 in Medium Size Powered Bookshelf Speakers - Edifier R1280T: $129.99 per pair Amazon eBay

Pros: ASR’s review found useful moderate-level bass output from an inexpensive powered pair. Remote volume and bass/treble controls make it easy to use without separate amplification. Measured bass reaches -3dB around 63Hz. Measured bass extension of 80Hz (-3dB).

Cons: Preference scores of 1.70 standalone and 4.31 with an ideal subwoofer reflect substantial tonal limitations, not just missing bass. The response spans 5.5dB from 300Hz to 5kHz, and listening-window narrow-band deviation is 0.650. Resonances and treble unevenness affect reflected sound too. Listening height is important, and high-level compression changes the balance.

Full Edifier R1280T review and specifications →

Amplifier Power	42w RMS Total
App	No
Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Bluetooth	No
Dimensions	9.2"H x 7.7"W x 5.7"D (234 x 196 x 146 mm)
Drivers	4" (102mm) woofer
EQ	No
Frequency Response	52Hz - 20kHz (Manufacturer specified)
Inputs	2x RCA Input
Outputs	None
Spinorama Preference Score	1.70
Spinorama Preference Score with Perfect Sub	4.31
Weight	10.8 lbs (4.9 kg)

Check current price at Amazon ($129.99) →Search eBay for Edifier R1280T →

Ranked #61 of 65 in Medium Size Powered Bookshelf Speakers - JBL One Series 104: $129 per pair Discontinued eBay

Pros: ASR’s powered-system measurement gives -3dB bass around 72Hz, and the compact coaxial layout is convenient for a small desk. Its internal equalization is part of the working speaker and should be included when assessing it, rather than judging the passive drivers with that correction bypassed. Measured bass extension of 45Hz (-3dB).

Cons: Even with the active system measured properly, scores are only 1.36 standalone and 4.08 with an ideal subwoofer. The 4.9dB midrange span and a high-frequency cancellation around 7.4kHz indicate significant unevenness; the review also found some vocals bright and irritating. These are results for the original 104, not a verification of the later 104-BT. Discontinued.

Full JBL One Series 104 review and specifications →

Amplifier Power	60W total Class D (30W per speaker)
App	No
Bass Extension (-10dB)	35Hz with the amplifier's DSP bass boost active (measured, Audio Science Review)
Bass Extension (-3dB)	45Hz with the amplifier's DSP bass boost active (measured, Audio Science Review)
DSP	Yes
Dimensions	9.7H x 6W x 4.9D in (per manufacturer, 104-BT)
Discontinued	Yes
Drivers	4.5" coaxial low-frequency driver, 0.75" soft dome tweeter
EQ	Yes (fixed, amplifier-applied)
Frequency Response	60Hz - 20kHz (Manufacturer specified)
Weight	4.5 lbs (2.06 kg) (master), 3.8 lbs (1.73 kg) (slave)

Search eBay for JBL One Series 104 →

Links
- Official JBL One Series 104 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #64 of 65 in Medium Size Powered Bookshelf Speakers - NHT Pro M-00: $498 per pair (used market; originally $249 each), Discontinued eBay

Pros: A sturdy metal enclosure, analog studio/consumer connections and selectable nearfield/farfield voicing give it practical features as an older powered monitor. Measured bass extension of 83.3Hz (-3dB).

Cons: The review identifies a pronounced upper-bass cancellation, treble peaks and problematic vertical response, and strongly prefers the JBL 305P MKII in direct listening. Discontinued.

Full NHT Pro M-00 review and specifications →

Amplifier Power	75W RMS continuous, 150W peak (per speaker)
App	No
Bass Extension (-10dB)	59.7Hz (measured, Audio Science Review)
Bass Extension (-3dB)	83.3Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	9H x 5.7W x 7.3D in
Discontinued	Yes
Drivers	1" ferrofluid-cooled fabric dome tweeter, 4.5" treated paper-cone woofer
Inputs	RCA, XLR/TRS
Weight	14 lbs (6.35 kg) each

Search eBay for NHT Pro M-00 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Large Size Powered Bookshelf Speakers

Ranked #1 of 67 in Large Size Powered Bookshelf Speakers - AsciLab C8C: $6,200 per pair Audiophonics eBay

Pros: ASR’s revised measurement combines an 8.02 ideal-subwoofer preference score with a 1.7dB response span from 300Hz to 5kHz, supporting highly even vocal and instrumental balance. Bass reaches 30.8Hz at -3dB and 23.4Hz at -6dB, giving substantial low-end reach without an added subwoofer. Measured bass extension of 30.8Hz (-3dB).

Cons: The result applies to the revised measured configuration; confirm that the speaker’s tuning matches it. Each cabinet weighs about 27.5kg and needs a substantial stand. Deep extension and excellent tonality do not guarantee unlimited bass output or eliminate the need to adjust placement.

Full AsciLab C8C review and specifications →

Amplifier Power	600W total (100W tweeter, 250W midrange, 250W subwoofer)
Bass Extension (-10dB)	20.5Hz (measured, Audio Science Review)
Bass Extension (-3dB)	30.8Hz (measured, Audio Science Review)
Bass Extension (-6dB)	23.4Hz (measured, Audio Science Review)
Country	South Korea
Crossover Frequency	150Hz, 1.2kHz
Dimensions	22"H x 10"W x 13.8"D (560 x 254 x 350 mm)
Drivers	1" alumina ceramic dome tweeter with waveguide, 2x 6" alumina ceramic midrange/woofers, 2x 8" side mounted opposed cardioid subwoofers
Enclosure	sealed
Spinorama Preference Score	7.25
Spinorama Preference Score with Perfect Sub	8.02
Warranty	2 years
Weight	60.6 lbs (27.5 kg) each

Check current price at Audiophonics (5799 EUR/pair) →Search eBay for AsciLab C8C →

Links
- AsciLab C8C Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: AsciLab C8C Active Speaker Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #2 of 67 in Large Size Powered Bookshelf Speakers - Mesanovic CDM65: $5,300 per pair Front End Audio eBay

Pros: Erin’s measurements show a very even 1.1dB span from 300Hz to 5kHz and an 8.08 ideal-subwoofer preference score, strong evidence for natural tonal balance. Measured -3dB bass extension is 36.6Hz. Switchable cardioid operation offers useful control of rearward radiation; an optional WiSA hub adds wireless system integration. Measured bass extension of 36.6Hz (-3dB).

Cons: Cardioid operation and bass tuning affect placement and output, so use the appropriate mode for the room. A subwoofer is still useful for deep bass at high levels. These are substantial, roughly 14.5kg cabinets, and the optional hub adds cost rather than being necessary for wired playback.

Full Mesanovic CDM65 review and specifications →

Amplifier Power	600W total (150W tweeter, 150W midrange, 300W subwoofers combined)
Bass Extension (-10dB)	29.8Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	36.6Hz (measured, Erin's Audio Corner)
Country	United States
Crossover Frequency	150Hz, 2,300Hz
Dimensions	15"H x 8"W x 14"D (381 x 203 x 356 mm)
Drivers	1" aluminum dome waveguide tweeter, 5" aluminum cone midrange, 2x 6.5" paper Kevlar side mounted subwoofers
Enclosure	sealed
Frequency Response	40Hz-20kHz +/-1.0dB
Maximum SPL	103dB @ 1m (manufacturer specified)
Spinorama Preference Score	6.58
Spinorama Preference Score with Perfect Sub	8.08
Warranty	2 years
Weight	32 lbs (14.5 kg) each

Check current price at Front End Audio ($5,998/pair) →Search eBay for Mesanovic CDM65 →

Links
- Mesanovic CDM65 Official Page
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
- Mesanovic CDM65 vs Edifier R2850DB

Ranked #4 of 67 in Large Size Powered Bookshelf Speakers - Genelec 8351B: $9150 per pair B&H Photo Video eBay

Pros: The vertical ASR measurement scores 7.75 with an ideal subwoofer and reaches 35.2Hz at -3dB. Coaxial midrange and treble help maintain consistent sound as the listening angle changes. Low measured distortion at ordinary listening levels and GLM calibration make it a strong precision-monitoring choice. Measured bass extension of 33Hz (-3dB).

Cons: Bass distortion increases at higher playback levels, so a subwoofer remains useful for demanding material. Upper-treble distortion in the test also cautions against assuming unlimited output. Calibration hardware adds to an already expensive system, and the quoted result is for the measured vertical orientation.

Full Genelec 8351B review and specifications →

Amplifier Power	550w Per Speaker
App	Yes (GLM)
Bass Extension (-10dB)	28Hz (measured, Audio Science Review)
Bass Extension (-3dB)	33Hz (measured, Audio Science Review)
Bluetooth	No
DSP	Yes
Dimensions	17"H x 11.3"W x 10.9"D (431.8 x 287 x 276.9 mm)
Drivers	8.6" woofer, 5" coaxial with tweeter midrange, 0.75" (19mm) coaxial tweeter
EQ	Yes (via GLM software)
Frequency Response	32Hz - 40kHz (±1.5dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	113dB @ 1m (manufacturer specified)
Weight	31.1 lbs (14.1 kg) each

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Links
- Official Genelec 8351B Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #5 of 67 in Large Size Powered Bookshelf Speakers - Neumann KH420: $10500 per pair B&H Photo Video eBay

Pros: A 1.2dB response span from 300Hz to 5kHz, 7.51 ideal-subwoofer score and 27.8Hz measured -3dB extension combine accurate mids with genuinely deep bass. Its three-way design and low distortion at normal levels make it particularly attractive for larger listening distances and dynamic material. Measured bass extension of 32Hz (-3dB).

Cons: It is a large, heavy studio monitor rather than an easy desktop speaker. Vertical alignment matters around the crossover regions. Bass distortion rises as playback levels increase, and the measured high-level limits still apply despite the substantial drivers and amplifiers.

Full Neumann KH420 review and specifications →

Amplifier Power	555w Per Speaker
App	Yes (MA 1 alignment)
Bass Extension (-10dB)	24Hz (measured, Audio Science Review)
Bass Extension (-3dB)	32Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	25.4"H x 13"W x 17.5"D (645.2 x 330.2 x 444.5 mm)
Drivers	10" woofer, 4" dome midrange, 1" fabric dome tweeter
EQ	Yes (Room response controls)
Frequency Response	31Hz - 21kHz (±3dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	124dB @ 1m (manufacturer specified)
Spinorama Preference Score	6.39
Spinorama Preference Score with Perfect Sub	7.51
Weight	77.2 lbs (35 kg) each

Check current price at B&H Photo Video →Search eBay for Neumann KH420 →

Links
- Official Neumann KH420 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #6 of 67 in Large Size Powered Bookshelf Speakers - Genelec 8361A: $10900 per pair B&H Photo Video eBay

Pros: The coaxial design combines consistent imaging with substantial output capability. ASR measured a 1.8dB response span from 300Hz to 5kHz, 33.7Hz -3dB extension and a 7.35 ideal-subwoofer score. Low distortion and restrained compression support its use at greater distances than smaller nearfield monitors. Measured bass extension of 34Hz (-3dB).

Cons: Its larger size buys headroom, not uniformly better tonality than the smaller Ones models. Some lower-midrange unevenness remains, and listening angle can affect perceived treble balance. The cabinets are very heavy and expensive; GLM setup and suitable stands need to be budgeted separately.

Full Genelec 8361A review and specifications →

Amplifier Power	1000w Per Speaker
App	Yes (GLM)
Bass Extension (-10dB)	29Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	34Hz (measured, Erin's Audio Corner)
Bluetooth	No
DSP	Yes
Dimensions	22.5"H x 14"W x 13.6"D (571.5 x 355.6 x 345.4 mm)
Drivers	Dual 263 x 137 mm woofers, 5.1" coaxial with tweeter midrange, 1" (25mm) coaxial tweeter
EQ	Yes (via GLM software)
Frequency Response	30Hz - 43kHz (±2dB) (Manufacturer specified)
Inputs	XLR
Maximum SPL	118dB @ 1m (manufacturer specified)
Spinorama Preference Score	6.04
Spinorama Preference Score with Perfect Sub	7.35
Weight	70.3 lbs (31.9 kg) each

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Links
- Official Genelec 8361A Product Page
Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Genelec 8361a is FANTASTIC for Your Home Studio or HiFi! More from Erin’s Audio Corner →
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #7 of 67 in Large Size Powered Bookshelf Speakers - Genelec 8341A: $6590 per pair B&H Photo Video eBay

Pros: An 8.09 ideal-subwoofer preference score and 1.2dB response span from 300Hz to 5kHz place the measured vertical configuration among the strongest tonal performers here. Coaxial radiation and GLM support precise nearfield imaging and room integration. Measured bass extension of 58Hz (-3dB).

Cons: Measured -3dB extension is 47.6Hz, so the larger 8351B and 8361A provide more useful low-end reach and headroom. The review found bass-output limitations at demanding levels. Its excellent ideal-subwoofer score should not be read as equivalent full-range output to those larger models.

Full Genelec 8341A review and specifications →

Amplifier Power	550W total (250W bass, 150W mid, 150W treble)
App	No
Bass Extension (-10dB)	40Hz (measured, Audio Science Review)
Bass Extension (-3dB)	58Hz (measured, Audio Science Review)
DSP	No
Dimensions	not published by manufacturer
Drivers	2x 6.5" woofers, 3.5" midrange, 0.75" tweeter (coaxial mid/tweeter)
EQ	Yes (Room adjustment)
Frequency Response	338Hz - 37kHz (-6dB) (Manufacturer specified)
Spinorama Preference Score	6.32
Spinorama Preference Score with Perfect Sub	8.09
Weight	not published by manufacturer

Check current price at B&H Photo Video →Search eBay for Genelec 8341A →

Links
- Official Genelec 8341A Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #8 of 67 in Large Size Powered Bookshelf Speakers - Neumann KH 150: $3,398 per pair B&H Photo Video eBay

Pros: An exceptionally tight 1.0dB response span from 300Hz to 5kHz supports neutral vocals and instruments. The measured ideal-subwoofer score is 7.58, with -3dB bass extension to 39.6Hz. DSP and optional MA 1 alignment offer useful control over room-related response errors. Measured bass extension of 39.6Hz (-3dB).

Cons: A two-way nearfield monitor cannot match the largest three-way systems for deep-bass output at distance. Keep the tweeter near ear height to avoid crossover-related changes off the vertical axis. MA 1 calibration requires additional equipment, and studio connections are less convenient than a consumer streaming system.

Full Neumann KH 150 review and specifications →

Amplifier Power	245W total (145W woofer, 100W tweeter, 10% THD+N)
Bass Extension (-10dB)	34.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	39.6Hz (measured, Audio Science Review)
Country	Germany
Crossover Frequency	1.7kHz
Dimensions	13.6"H x 8.9"W x 10.7"D (345 x 225 x 273 mm)
Drivers	1" tweeter, 6.5" woofer
Enclosure	ported
Frequency Response	39Hz-20.4kHz +/-3dB
Maximum SPL	118.7dB @ 1m half space (manufacturer specified)
Spinorama Preference Score	5.84
Spinorama Preference Score with Perfect Sub	7.58
Warranty	2 years
Weight	17.6 lbs (8.0 kg) each

Check current price at B&H Photo Video ($3,398/pair) →Search eBay for Neumann KH 150 →

Links
- Neumann KH 150 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #9 of 67 in Large Size Powered Bookshelf Speakers - Dutch & Dutch 8C: $13000 per pair Tidepoolaudio eBay

Pros: Very deep measured bass reaches 23.4Hz at -3dB, while the 1.8dB response span from 300Hz to 5kHz supports even mids. The 6.51 standalone score reflects that full-range strength. Cardioid midrange radiation and boundary-aware bass adjustment help integrate the system with nearby walls. Measured bass extension of 23Hz (-3dB), with a measured sensitivity of 106dB.

Cons: Cardioid operation reduces some reflections; it does not make the speaker independent of the room. Rear-woofer placement and setup remain important. Its 7.16 ideal-subwoofer score trails the strongest tonal performers here, although its deep native bass is a meaningful advantage for listening without a sub.

Full Dutch & Dutch 8C review and specifications →

Amplifier Power	1000W (250W tweeter + 250W mid + 500W dual woofers)
App	Yes (Ascend)
Bass Extension (-10dB)	<20Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	23Hz (measured, Erin's Audio Corner)
Bluetooth	No
DSP	Yes
Dimensions	19"H x 10.5"W x 15"D (482.6 x 266.7 x 381 mm)
Drivers	2x 8" Aluminium Cone woofers, 8" Aluminium Cone midrange, 1" Aluminium/Magnesium dome tweeter
EQ	Yes (24-band parametric)
Frequency Response	20Hz - 20kHz (Manufacturer specified)
Inputs	XLR
Maximum SPL	106dB @ 1m continuous (manufacturer specified)
Sensitivity	~106dB (measured at 0.30V/1m, Erin's Audio Corner)
Streaming Services	Yes (network streaming)
Weight	57.3 lbs (26 kg) each
Wi-Fi	Yes (Ethernet)

Check current price at Tidepoolaudio →Search eBay for Dutch & Dutch 8C →

Ranked #13 of 67 in Large Size Powered Bookshelf Speakers - Adam Audio S2V: $3500 per pair B&H Photo Video eBay

Pros: A 7.22 ideal-subwoofer score and relatively even listening-window response support a strong role as a subwoofer-assisted studio monitor. The review’s low-distortion findings add useful evidence beyond amplifier ratings, and onboard DSP permits tailored adjustment. Measured bass extension of 85Hz (-3dB).

Cons: Measured -3dB extension is 52.7Hz, so the large cabinet does not automatically deliver the deepest bass here. The native balance rises toward the treble, with some lower-midrange unevenness. DSP can improve that balance, but an EQ-optimized result is not its unadjusted performance.

Full Adam Audio S2V review and specifications →

Amplifier Power	350W total (300W woofer Class D, 50W tweeter Class A/B)
App	Yes
Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
DSP	Yes
Dimensions	not published by manufacturer
Drivers	7" woofer, S-ART AMT tweeter
EQ	No
Frequency Response	35Hz - 50kHz (Manufacturer specified)
Spinorama Preference Score	5.08
Spinorama Preference Score with Perfect Sub	7.22
Weight	not published by manufacturer

Check current price at B&H Photo Video →Search eBay for Adam Audio S2V →

Links
- Official Adam Audio S2V Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #16 of 67 in Large Size Powered Bookshelf Speakers - GGNTKT M1: £7,500 per pair Purite Audio (UK) eBay

Pros: The manufacturer-supplied monopole measurement shows a 1.6dB response span from 300Hz to 5kHz, 33.8Hz -3dB extension and a 7.03 ideal-subwoofer score. Those results support even midrange balance and useful bass from a relatively shallow cabinet. Measured bass extension of 33.8Hz (-3dB).

Cons: The cited measurement is specifically monopole, so it cannot substantiate claims about cardioid-mode performance. Outboard electronics add cabling and installation complexity; confirm the complete system configuration before purchase.

Full GGNTKT M1 review and specifications →

Amplifier Power	560W total (70W tweeter, 210W woofers per channel, Class D)
Bass Extension (-10dB)	28.2Hz (measured, spinorama.org vendor data)
Bass Extension (-3dB)	33.8Hz (measured, spinorama.org vendor data)
Country	Germany
Dimensions	12.6"H x 15.9"W x 5.5"D (319 x 405 x 140 mm)
Drivers	1.75" titanium ring diaphragm compression tweeter with waveguide, 3x 6.5" aluminum cone woofers (1 front, 2 rear firing, cardioid)
Enclosure	sealed
Frequency Response	36Hz-20kHz -3dB
Maximum SPL	112.8dB @ 1m (manufacturer specified)
Warranty	3 years (with registration)
Weight	24.3 lbs (11.0 kg) each

Check current price at Purite Audio (UK) (7500 GBP/pair) →Search eBay for GGNTKT M1 →

Links
- GGNTKT M1 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: GGNTKT Model M1 More from Audio Science Review →
- Manufacturer Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #17 of 67 in Large Size Powered Bookshelf Speakers - Neumann KH 310 A: $4,998 per pair B&H Photo Video eBay

Pros: The sealed three-way design combines 35.2Hz measured -3dB extension with low distortion in the review’s demanding playback tests. Its 2.2dB response span from 300Hz to 5kHz and 6.86 ideal-subwoofer score support balanced monitoring with useful full-range capability. Measured bass extension of 70Hz (-3dB).

Cons: Its measured tonal balance is not as even as the KH 150 or the best coaxial alternatives. Correct orientation and listening height matter for the separated drivers. The analog system lacks the integrated calibration workflow of newer DSP models, so room correction requires additional equipment.

Full Neumann KH 310 A review and specifications →

Amplifier Power	290W total (150W woofer, 70W mid, 70W tweeter)
App	No
Bass Extension (-10dB)	42Hz (measured, Audio Science Review)
Bass Extension (-3dB)	70Hz (measured, Audio Science Review)
DSP	No
Dimensions	not published by manufacturer
Drivers	8.25" woofer, 3" midrange, 1" tweeter
EQ	No
Frequency Response	34Hz - 21kHz (+/-3dB) (Manufacturer specified)
Spinorama Preference Score	5.36
Spinorama Preference Score with Perfect Sub	6.86
Weight	not published by manufacturer

Check current price at B&H Photo Video ($2499) →Search eBay for Neumann KH 310 A →

Links
- Official Neumann KH 310 A Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #18 of 67 in Large Size Powered Bookshelf Speakers - HEDD Type 20 MK2: $4800 per pair B&H Photo Video eBay

Pros: The measured ported configuration reaches 35.2Hz at -3dB and scores 6.92 with an ideal subwoofer. A 2.4dB response span from 300Hz to 5kHz supports broadly balanced mids, while ported operation reduces deep-bass strain compared with the sealed setting in the review. Measured bass extension of 32Hz (-3dB).

Cons: These results are for ported operation, not every bass or phase setting. Horizontal asymmetry and vertical crossover behavior make orientation and listening position important. Distortion rises at higher output, and linear-phase processing can add latency for live monitoring.

Full HEDD Type 20 MK2 review and specifications →

Amplifier Power	900W (3x300W)
App	Yes (HEDD CTRL)
Bass Extension (-10dB)	26Hz (measured, Audio Science Review)
Bass Extension (-3dB)	32Hz (measured, Audio Science Review)
Bluetooth	No
DSP	Yes (96kHz/32-bit)
Dimensions	14.1"H x 11"W x 13.3"D (358.1 x 279.4 x 337.8 mm)
Drivers	7" honeycomb composite woofer, 4" honeycomb composite midrange, HEDD AMT (Air Motion Transformer) tweeter
EQ	Yes (Desk filter, shelf filters)
Frequency Response	32Hz - 40kHz (Manufacturer specified)
Inputs	XLR (Analog/AES)
Maximum SPL	120dB @ 1m (per pair) (manufacturer specified)
Outputs	XLR (AES pass-through)
Spinorama Preference Score	5.34
Spinorama Preference Score with Perfect Sub	6.92
Weight	34 lbs (15.4 kg) each

Check current price at B&H Photo Video →Search eBay for HEDD Type 20 MK2 →

Links
- Official HEDD Type 20 MK2 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #19 of 67 in Large Size Powered Bookshelf Speakers - PSI Audio A21-M: $7,440 per pair B&H Photo Video eBay

Pros: ASR measured 39.6Hz -3dB extension and a 2.2dB response span from 300Hz to 5kHz, giving useful bass and broadly even mids. Its 6.87 ideal-subwoofer score supports serious monitoring, with analog phase compensation offering an alternative to DSP-based systems. Measured bass extension of 39.6Hz (-3dB).

Cons: The measured tonal result is good rather than a clear advance over less costly competitors. There is no built-in automatic room-calibration system, so placement or external correction still matters. The premium construction and analog circuitry should not be mistaken for proof of better audible performance.

Full PSI Audio A21-M review and specifications →

Amplifier Power	335W total (280W woofer, 55W tweeter, Class A/B)
Bass Extension (-10dB)	33.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	39.6Hz (measured, Audio Science Review)
Country	Switzerland
Crossover Frequency	2.4kHz
Dimensions	9.8"H x 15.7"W x 11.8"D (250 x 400 x 300 mm)
Drivers	27mm handmade dome tweeter, 172mm cone woofer
Enclosure	ported
Frequency Response	38Hz-23kHz -6dB
Maximum SPL	110dB short term, 121dB peak (manufacturer specified)
Spinorama Preference Score	5.21
Spinorama Preference Score with Perfect Sub	6.87
Warranty	5+1 years
Weight	28.2 lbs (12.8 kg) each

Check current price at B&H Photo Video ($3,720 each) →Search eBay for PSI Audio A21-M →

Links
- PSI Audio A21-M Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: PSI A21-M Monitor Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #20 of 67 in Large Size Powered Bookshelf Speakers - Genelec S360: $9,550 per pair B&H Photo Video eBay

Pros: A strong choice when professional output capability and listening distance matter. The measured 2.0dB response span from 300Hz to 5kHz, 39.6Hz -3dB extension and 6.81 ideal-subwoofer score support balanced sound, while GLM provides room-integration tools. Measured bass extension of 39.6Hz (-3dB).

Cons: The substantial enclosure and installation requirements make it excessive for many desks. Its tonal measurements do not surpass the best smaller monitors simply because it can play louder. Deep-bass reproduction still benefits from a subwoofer, especially in high-output systems.

Full Genelec S360 review and specifications →

Amplifier Power	350W total (250W woofer, 100W tweeter, Class D)
Bass Extension (-10dB)	35.6Hz (measured, Audio Science Review)
Bass Extension (-3dB)	39.6Hz (measured, Audio Science Review)
Country	Finland
Dimensions	20.9"H x 14.2"W x 14.2"D (530 x 360 x 360 mm)
Drivers	1" titanium compression tweeter, 10" cone woofer
Enclosure	ported
Frequency Response	36Hz-22kHz -6dB
Maximum SPL	Peak 128dB (manufacturer specified)
Spinorama Preference Score	5.08
Spinorama Preference Score with Perfect Sub	6.81
Warranty	2 years (5 with product registration)
Weight	66.1 lbs (30 kg) each

Check current price at B&H Photo Video ($4,775 each) →Search eBay for Genelec S360 →

Links
- Genelec S360A Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: Genelec S360 Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #22 of 67 in Large Size Powered Bookshelf Speakers - JBL 308P MKII: $498 per pair B&H Photo Video eBay

Pros: A 1.8dB response span from 300Hz to 5kHz and 6.89 ideal-subwoofer score support unusually good tonal balance for an accessible studio monitor. Measured -3dB extension of 42.5Hz supplies useful musical bass, and the waveguide helps maintain consistent horizontal coverage. Measured bass extension of 82Hz (-3dB).

Cons: Amplifier hiss may be noticeable in quiet, close-range use. Bass distortion and output limits matter when playing loudly, despite the 8-inch woofer. Keep the tweeter near ear height; vertical crossover behavior is less forgiving than the best coaxial designs.

Full JBL 308P MKII review and specifications →

Amplifier Power	112W total
App	No
Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82Hz (measured, Audio Science Review)
DSP	No
Dimensions	16.5"H x 10"W x 12.1"D (419.1 x 254 x 307.3 mm)
Drivers	8" woofer, 1" neodymium tweeter
EQ	No
Frequency Response	45Hz - 20kHz (+/-3dB) (Manufacturer specified)
Spinorama Preference Score	5.08
Spinorama Preference Score with Perfect Sub	6.89
Weight	not published by manufacturer

Check current price at B&H Photo Video ($249) →Search eBay for JBL 308P MKII →

Links
- Official JBL 308P MKII Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #24 of 67 in Large Size Powered Bookshelf Speakers - Yamaha HS8: $797.98 per pair Amazon eBay

Pros: ASR measurements support broadly neutral sound: a 2.3dB response span from 300Hz to 5kHz and 6.68 ideal-subwoofer score. Measured -3dB bass extension of 43.9Hz gives useful weight for music, with straightforward analog connections and room-adjustment controls. Measured bass extension of 43.9Hz (-3dB).

Cons: Its response and off-axis behavior are not as refined as the leading monitors. Vertical positioning around the crossover matters, and a subwoofer remains useful for deep bass. Basic rear-panel controls do not replace measured room correction.

Full Yamaha HS8 review and specifications →

Amplifier Power	120w Per Speaker
App	No
Bass Extension (-10dB)	34.7Hz (measured, Audio Science Review)
Bass Extension (-3dB)	43.9Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	15.4"H x 9.8"W x 13.1"D (391.2 x 248.9 x 332.7 mm)
Drivers	8" woofer, 1" dome tweeter
EQ	Yes (Room adjustment)
Frequency Response	47Hz - 24kHz (-3dB) (Manufacturer specified)
Inputs	XLR
Spinorama Preference Score	4.95
Spinorama Preference Score with Perfect Sub	6.68
Weight	22.5 lbs (10.2 kg)

Check current price at Amazon ($797.98) →Search eBay for Yamaha HS8 →

Ranked #27 of 67 in Large Size Powered Bookshelf Speakers - Genelec 8050B: $3800 per pair B&H Photo Video eBay

Pros: Measured -3dB extension of 35.2Hz gives the 8050B deeper native bass than many similarly ranked monitors. The 6.49 ideal-subwoofer score supports broadly balanced listening, with a waveguide and analog boundary controls for practical studio placement. Measured bass extension of 68Hz (-3dB).

Cons: A 2.7dB response span from 300Hz to 5kHz and a dip around 2kHz keep it below the strongest tonal performers. Port-related response features and high-level distortion also warrant attention. Unlike the SAM models, it does not provide GLM room calibration.

Full Genelec 8050B review and specifications →

Amplifier Power	270w Per Speaker
App	No
Bass Extension (-10dB)	50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	68Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	17.8"H x 11.3"W x 10.9"D (452.1 x 287 x 276.9 mm)
Drivers	8" (203mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	32Hz - 25kHz (-6dB) (Manufacturer specified)
Inputs	XLR
Weight	31.7 lbs (14.4 kg) each

Check current price at B&H Photo Video →Search eBay for Genelec 8050B →

Links
- Official Genelec 8050B Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #29 of 67 in Large Size Powered Bookshelf Speakers - Focal Solo6 ST6: $2,998 per pair B&H Photo Video eBay

Pros: ASR measured a tight 1.6dB response span from 300Hz to 5kHz and a 6.44 ideal-subwoofer score, supporting accurate midrange monitoring. The beryllium tweeter and Focus mode offer a useful professional workflow, with Focus serving as an alternate mix-check presentation. Measured bass extension of 46.9Hz (-3dB).

Cons: The measured -3dB point is 46.9Hz, so deep-bass work benefits from a subwoofer. The standard-mode score does not apply to Focus mode. There is no automatic room-calibration system, and premium driver materials alone do not establish superior sound.

Full Focal Solo6 ST6 review and specifications →

Amplifier Power	130W total (80W LF + 50W HF); Bi-amped (Class G LF + Class AB HF)
Bass Extension (-10dB)	38.1Hz (measured, spinorama.org)
Bass Extension (-3dB)	46.9Hz (measured, spinorama.org)
Dimensions	24.6 x 33.4 x 29.5cm (9.7 x 13.1 x 11.6 in) each, 13kg (28.6 lb) each
Drivers	1" Beryllium inverted-dome tweeter, 6.5" "W" composite sandwich-cone woofer
Maximum SPL	110dB peak at 1m
Spinorama Preference Score	4.04
Spinorama Preference Score with Perfect Sub	6.18

Check current price at B&H Photo Video ($1,499.00) →Search eBay for Focal Solo6 ST6 →

Links
- Official Focal Solo6 ST6 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #31 of 67 in Large Size Powered Bookshelf Speakers - Kali Audio LP-6: $298 per pair Discontinued B&H Photo Video eBay

Pros: The original LP-6 measures 43.9Hz at -3dB and scores 6.33 with an ideal subwoofer. Its waveguide and placement controls make it a credible budget studio monitor, with useful bass for ordinary music listening. Measured bass extension of 55Hz (-3dB).

Cons: The measured 2.9dB response span from 300Hz to 5kHz is less even than the newer LP-6 V2. First-generation amplifier hiss can be distracting at short distances. Do not assume the V2’s noise improvements or measurements apply to this model. Discontinued.

Full Kali Audio LP-6 review and specifications →

Amplifier Power	80W total (40W LF, 40W HF)
App	No
Bass Extension (-10dB)	42Hz (measured, Audio Science Review)
Bass Extension (-3dB)	55Hz (measured, Audio Science Review)
DSP	No
Dimensions	14.1"H x 8.8"W x 10.3"D (358.8 x 222.3 x 260.4 mm)
Discontinued	Yes
Drivers	6.5" woofer, 1" textile dome tweeter
EQ	No
Frequency Response	47Hz - 21kHz (-3dB) (Manufacturer specified)
Weight	16.1 lbs (7.3 kg) each

Check current price at B&H Photo Video →Search eBay for Kali Audio LP-6 →

Links
- Official Kali Audio LP-6 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #35 of 67 in Large Size Powered Bookshelf Speakers - Palmer Orbit 11: $1,532 per pair Thomann eBay

Pros: A 27.8Hz measured -3dB point provides genuinely deep standalone bass. The 1.8dB response span from 300Hz to 5kHz supports even mids, and the coaxial arrangement offers a compact acoustic source for nearfield listening. Measured bass extension of 27.8Hz (-3dB).

Cons: Its 6.20 ideal-subwoofer score is more modest than the narrow midrange span alone suggests; response outside that band and off-axis behavior also matter. Deep-bass extension does not prove high-level headroom. Studio-oriented connections and setup are less convenient than an all-in-one consumer pair.

Full Palmer Orbit 11 review and specifications →

Amplifier Power	1000W peak / 400W RMS total; Tri-amped Class D
Bass Extension (-10dB)	21.5Hz (measured, spinorama.org)
Bass Extension (-3dB)	27.8Hz (measured, spinorama.org)
Dimensions	8.5" x 11.5" x 11.5" (217 x 293 x 292 mm) each
Drivers	1" tweeter + 6.5" midrange (coaxial), 2x 8" woofers
Maximum SPL	116dB peak at 1m
Spinorama Preference Score	5.30
Spinorama Preference Score with Perfect Sub	6.20
Weight	30.6 lbs (13.9 kg) each

Check current price at Thomann ($766) →Search eBay for Palmer Orbit 11 →

Links
- Official Palmer Orbit 11 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #37 of 67 in Large Size Powered Bookshelf Speakers - Meyer Sound Amie: $8,200 per pair RSPE Audio Solutions eBay

Pros: ASR measured a 2.1dB response span from 300Hz to 5kHz and a 6.11 ideal-subwoofer score, supporting reasonably even midrange balance. Its professional nearfield design is suited to a deliberately configured monitoring system.

Cons: Measured -3dB extension is 48.3Hz, so full-range monitoring benefits from bass support. The broader response and off-axis measurements are less even than the strongest competitors despite the narrow midband span. Professional installation features add cost without guaranteeing a tonal advantage.

Full Meyer Sound Amie review and specifications →

Amplifier Power	2-channel Class D, one channel per driver
Country	United States
Dimensions	15.3H x 9W x 13.24D in
Drivers	1" silk dome tweeter (constant-directivity waveguide), 6.5" long-excursion cone woofer
Enclosure	2-way active, sealed, multi-ply birch cabinet
Maximum SPL	117.5-120.5dB (manufacturer specified)
Spinorama Preference Score	3.98
Spinorama Preference Score with Perfect Sub	6.11
Weight	24.9 lbs (11.3 kg) each

Check current price at RSPE Audio Solutions (call for price) →Search eBay for Meyer Sound Amie →

Links
- Meyer Sound Amie Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Meyer Sound Amie vs Focal Trio6 ST6

Ranked #38 of 67 in Large Size Powered Bookshelf Speakers - JBL 708P: $4000 per pair B&H Photo Video eBay

Pros: Erin’s measurements give 43.9Hz -3dB extension and a 6.02 ideal-subwoofer score, with useful bass from a professional active monitor. The waveguide and onboard processing make it a practical choice for a carefully installed studio system. Measured bass extension of 82Hz (-3dB).

Cons: The 2.6dB response span from 300Hz to 5kHz includes audible-relevance irregularities, with port-region features and vertical crossover sensitivity. High-level distortion remains a constraint. Its professional positioning and amplifier power do not make it automatically more neutral than the cheaper 308P MKII.

Full JBL 708P review and specifications →

Amplifier Power	500W total (250W woofer, 250W tweeter)
App	No
Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82Hz (measured, Audio Science Review)
DSP	No
Dimensions	17.2"H x 9.8"W x 11.5"D (438 x 248 x 292 mm)
Drivers	8" woofer, 2409H 1" compression driver
EQ	No
Frequency Response	41Hz - 25kHz (+/-3dB) (Manufacturer specified)
Spinorama Preference Score	4.14
Spinorama Preference Score with Perfect Sub	6.02
Weight	25.1 lbs (11.4 kg) each

Check current price at B&H Photo Video →Search eBay for JBL 708P →

Links
- Official JBL 708P Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Erin’s Audio Corner Measurements (spinorama.org) More from Erin’s Audio Corner →
Head-to-Head Comparisons

Ranked #40 of 67 in Large Size Powered Bookshelf Speakers - JBL 306P MKII: $398 per pair B&H Photo Video eBay

Pros: A 6.02 ideal-subwoofer score and 46.9Hz measured -3dB extension make this a useful affordable nearfield monitor. The waveguide supports broad horizontal listening coverage, and basic boundary controls help with setup. Measured bass extension of 78Hz (-3dB).

Cons: The 3.4dB response span from 300Hz to 5kHz is less even than the 308P MKII’s, with midrange resonances affecting neutrality. Hiss can matter at a quiet desk, while bass distortion limits demanding playback. A subwoofer improves bandwidth but does not remove the midrange irregularities.

Full JBL 306P MKII review and specifications →

Amplifier Power	112W total
App	No
Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
DSP	No
Dimensions	16.1"H x 11.2"W x 12.9"D (408 x 285 x 328 mm)
Drivers	6.5" woofer, 1" neodymium tweeter
EQ	No
Frequency Response	39Hz - 24kHz (-10dB) (Manufacturer specified)
Spinorama Preference Score	4.15
Spinorama Preference Score with Perfect Sub	6.02
Weight	13.4 lbs (6.1 kg) each

Check current price at B&H Photo Video ($199) →Search eBay for JBL 306P MKII →

Links
- Official JBL 306P MKII Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #41 of 67 in Large Size Powered Bookshelf Speakers - Sigberg Audio Manta: $32,220.00 for the full system (2 speakers + 2 dedicated subwoofers, built to order) Sigberg Audio eBay

Pros: Designed for use with separate subwoofers, the Manta is a main speaker for a complete system rather than a conventional full-range desktop pair.

Cons: Separate subwoofers and system setup add cost and occupy more space than the main speakers alone. Correct crossover integration and placement are essential.

Full Sigberg Audio Manta review and specifications →

Amplifier Power	600W per speaker
App	No
Bass Extension (-3dB)	18Hz (manufacturer, with companion subwoofers)
Bluetooth	No
Country	Norway
DSP	Yes
Dimensions	23.6"H x 14.2"W x 13.8"D (600 x 360 x 350 mm)
Drivers	12" midbass, 5.5" coaxial mid/tweeter with 1" silk dome
EQ	Yes (9-band parametric, factory presets)
Enclosure	sealed
Inputs	XLR, RCA, Optical, Coaxial/SPDIF, AES
Maximum SPL	122dB (manufacturer specified)
Measurement Source	Manufacturer
Spinorama Preference Score	2.48
Spinorama Preference Score with Perfect Sub	5.91
Weight	55.1 lbs (25.0 kg) each

Check current price at Sigberg Audio →Search eBay for Sigberg Audio Manta →

Links
- Sigberg Audio Manta Website
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
- Sigberg Audio Manta vs Fluid Audio Image 2
- Sigberg Audio Manta vs JBL 306P MKII

Ranked #43 of 67 in Large Size Powered Bookshelf Speakers - Barefoot Footprint 01: $3,199 per pair B&H Photo Video eBay

Pros: Measured bass reaches 35.2Hz at -3dB, giving substantial low-end weight. Its active multiway format and opposed bass drivers offer a compact professional system, with a 4.64 standalone preference score reflecting useful full-range capability.

Cons: The 5.86 ideal-subwoofer score and 2.9dB response span from 300Hz to 5kHz indicate tonal unevenness relative to the strongest monitors. Driver count and opposed-woofer construction do not guarantee neutral room sound. Careful placement and correction remain worthwhile.

Full Barefoot Footprint 01 review and specifications →

Amplifier Power	650W total per speaker (500W LF, 150W HF), bi-amped
Country	United States
Dimensions	14.0H x 9.5W x 13.0D in
Drivers	1" ring-radiator tweeter, 4" aluminum-cone midrange, 2x 8" paper-composite woofers (Dual-Force opposed)
Enclosure	3-way active, sealed woofer/midrange chambers, machined aluminum baffle
Frequency Response	36Hz-45kHz (+/-3dB)
Spinorama Preference Score	4.64
Spinorama Preference Score with Perfect Sub	5.86
Weight	35.1 lbs (15.9 kg) each

Check current price at B&H Photo Video ($3199/pair) →Search eBay for Barefoot Footprint 01 →

Links
- Barefoot Sound Footprint01 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Barefoot Footprint 01 vs Fluid Audio Image 2

Ranked #46 of 67 in Large Size Powered Bookshelf Speakers - Dynaudio Core 47: $5,250 per pair B&H Photo Video eBay

Pros: A professional three-way monitor with 42.5Hz measured -3dB extension and flexible installation controls. Its 5.73 ideal-subwoofer score supports a usable studio foundation when paired with appropriate room setup.

Cons: The measured 3.1dB response span from 300Hz to 5kHz and listening-window unevenness keep it below the leading accuracy choices. A nearly flat overall response slope does not mean the individual frequencies are equally balanced. Premium construction and amplifier power do not resolve those response variations.

Full Dynaudio Core 47 review and specifications →

Amplifier Power	1,150W each (150W HF, 500W MF, 500W LF)
Country	Denmark
Dimensions	9.4H x 15.4W x 14D in
Drivers	1" Esotar Pro tweeter, 4" MSP midrange, 7" MSP woofer
Enclosure	3-way active, bass-reflex
Inputs	Analog XLR, AES3 digital XLR, word clock
Spinorama Preference Score	4.08
Spinorama Preference Score with Perfect Sub	5.73
Weight	33.3 lbs (15.1 kg) each

Check current price at B&H Photo Video ($2,625 each) →Search eBay for Dynaudio Core 47 →

Links
- Dynaudio Core 47 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Dynaudio Core 47 vs Kali Audio LP-8 V2

Ranked #48 of 67 in Large Size Powered Bookshelf Speakers - Emotiva Airmotiv 6s: $800 per pair Discontinued eBay

Pros: ASR measured 49.1Hz -3dB bass extension and a 5.75 ideal-subwoofer score. The review found useful output capability, making it a credible option for ordinary nearfield playback with additional bass support when needed. Measured bass extension of 72Hz (-3dB).

Cons: The 3.0dB response span from 300Hz to 5kHz includes lower-midrange unevenness that can change vocal weight. Treble peaks also prevent a fully neutral balance. Equalization may help, but the substantially higher EQ-optimized score is not its native performance. Discontinued.

Full Emotiva Airmotiv 6s review and specifications →

Amplifier Power	210W total (100W tweeter, 110W woofer)
App	No
Bass Extension (-10dB)	55Hz (measured, Audio Science Review)
Bass Extension (-3dB)	72Hz (measured, Audio Science Review)
DSP	No
Discontinued	Yes
Drivers	6.5" AirMotiv low-frequency transducer, 60x32mm AirMotiv tweeter
EQ	Yes (built-in presets)
Frequency Response	42Hz - 25kHz (+0/-3dB) (Manufacturer specified)
Weight	24.9 lbs (11.3 kg) each

Search eBay for Emotiva Airmotiv 6s →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #49 of 67 in Large Size Powered Bookshelf Speakers - M-Audio BX8 D3: $258 per pair B&H Photo Video eBay

Pros: Measured -3dB extension of 48.3Hz provides useful musical bass, with a 5.76 ideal-subwoofer score. The large woofer and analog connections suit a straightforward studio setup without requiring a streaming ecosystem.

Cons: A 3.9dB response span from 300Hz to 5kHz and downward tonal tilt suggest a darker, less even presentation than the leaders. The 8-inch driver and amplifier rating are not proof of deeper or cleaner bass than smaller competitors. Room controls cannot fully correct frequency-dependent directivity.

Full M-Audio BX8 D3 review and specifications →

Amplifier Power	150W each (80W LF, 70W HF)
Country	United States (design)
Dimensions	15.1H x 9.8W x 11.9D in
Drivers	1.25" silk-dome tweeter, 8" Kevlar woofer
Enclosure	2-way active, rear-ported MDF
Inputs	Balanced XLR and 1/4" TRS
Spinorama Preference Score	3.75
Spinorama Preference Score with Perfect Sub	5.76
Weight	23.1 lbs (10.5 kg) each

Check current price at B&H Photo Video ($129 each) →Search eBay for M-Audio BX8 D3 →

Links
- M-Audio BX8 D3 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- M-Audio BX8 D3 vs Emotiva Airmotiv 6s

Ranked #50 of 67 in Large Size Powered Bookshelf Speakers - Focal Alpha 65 EVO: $998 per pair Amazon eBay

Pros: ASR measured 42.5Hz -3dB extension, providing useful low-end reach for music. Analog input options and tonal controls make it straightforward to integrate into a studio, with a 5.71 ideal-subwoofer score indicating respectable but not leading tonality. Measured bass extension of 45Hz (-3dB).

Cons: The measured 2.7dB response span from 300Hz to 5kHz and listening-window variation do not support a claim of reference-level neutrality. Placement and external correction may help. An anomalous distortion result from an individual sample should not be treated as a proven defect in every unit.

Full Focal Alpha 65 EVO review and specifications →

Amplifier Power	85w Per Speaker
App	No
Bass Extension (-10dB)	36Hz (measured, Audio Science Review)
Bass Extension (-3dB)	45Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	13.4"H x 10.3"W x 11.4"D (340.4 x 261.6 x 289.6 mm)
Drivers	6.5" (165mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	40Hz - 22kHz (+-3dB) (Manufacturer specified)
Inputs	TRS, XLR, RCA
Spinorama Preference Score	3.83
Spinorama Preference Score with Perfect Sub	5.71
Weight	16.8 lbs (7.6 kg) each

Check current price at Amazon ($499.00) →Search eBay for Focal Alpha 65 EVO →

Ranked #52 of 67 in Large Size Powered Bookshelf Speakers - Yamaha HS7: $699.98 per pair Amazon eBay

Pros: A straightforward analog monitor with boundary and treble controls. The measured -6dB point is 43.9Hz, so there is useful bass below the upper-bass region; the ideal-subwoofer score is 5.60.

Cons: Its uneven bass response crosses -3dB around 87.9Hz in the normalized measurement, so quoting the 41Hz low-frequency score input as flat bass extension is misleading. A 2.8dB response span from 300Hz to 5kHz and crossover-related variation also limit neutrality. Bass support does not fix all midrange and treble irregularities.

Full Yamaha HS7 review and specifications →

Amplifier Power	95W each (60W LF, 35W HF)
Country	Japan (design)
Dimensions	13.1H x 8.3W x 11.2D in
Drivers	1" dome tweeter, 6.5" cone woofer
Enclosure	2-way active, rear-ported
Inputs	Balanced XLR and 1/4" TRS
Spinorama Preference Score	3.66
Spinorama Preference Score with Perfect Sub	5.60
Weight	18.1 lbs (8.2 kg) each

Check current price at Amazon ($349.99 each) →Search eBay for Yamaha HS7 →

Links
- Yamaha HS7 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Yamaha HS7 vs Adam Audio A7V

Ranked #53 of 67 in Large Size Powered Bookshelf Speakers - Adam Audio T8V: $699.98 per pair Amazon eBay

Pros: Measured -3dB extension of 39.6Hz gives useful bass depth for an affordable large monitor. Analog inputs and basic shelf controls offer uncomplicated studio integration. Measured bass extension of 45Hz (-3dB).

Cons: The 5.42 ideal-subwoofer score and 3.0dB response span from 300Hz to 5kHz show less even tonal balance than stronger budget alternatives. Treble emphasis and crossover-region vertical cancellation make listening height important. Deep bass and an AMT tweeter do not by themselves imply accurate sound.

Full Adam Audio T8V review and specifications →

Amplifier Power	90w Per Speaker
App	No
Bass Extension (-10dB)	35Hz (measured, Audio Science Review)
Bass Extension (-3dB)	45Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	15.8"H x 9.8"W x 13.2"D (401.3 x 248.9 x 335.3 mm)
Drivers	8" (203mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	33Hz - 25kHz (-6dB) (Manufacturer specified)
Inputs	XLR, RCA
Spinorama Preference Score	3.77
Spinorama Preference Score with Perfect Sub	5.42
Weight	21.6 lbs (9.8 kg)

Check current price at Amazon ($349.99) →Search eBay for Adam Audio T8V →

Ranked #54 of 67 in Large Size Powered Bookshelf Speakers - Adam Audio T7V: $579.98 per pair Amazon eBay

Pros: Audioholics’ measurements provide useful evidence about the midrange and treble, with a digitized 2.4dB response span from 300Hz to 5kHz. Basic tonal controls and analog connections suit a straightforward nearfield system. Measured bass extension of 65Hz (-3dB).

Cons: Correct listening height is important for the two-way crossover. Basic shelf controls offer less adjustment flexibility than parametric room correction.

Full Adam Audio T7V review and specifications →

Amplifier Power	70w Per Speaker
App	No
Bass Extension (-10dB)	approx. 45Hz, extrapolated from the reviewer's directly-computed -6dB point of 45.4Hz (measured, Audio Science Review)
Bass Extension (-3dB)	approx. 65Hz, extrapolated from the reviewer's directly-computed -6dB point of 45.4Hz (measured, Audio Science Review)
Bluetooth	No
DSP	No
Dimensions	13.7"H x 8.3"W x 11.5"D (348 x 210.8 x 292.1 mm)
Drivers	7" (178mm) woofer
EQ	Yes (Room adjustment)
Frequency Response	39Hz - 25kHz (-6dB) (Manufacturer specified)
Inputs	XLR, RCA
Weight	15.7 lbs (7.1 kg)

Check current price at Amazon ($289.99) →Search eBay for Adam Audio T7V →

Ranked #64 of 67 in Large Size Powered Bookshelf Speakers - Klipsch The Sevens: $999.99 per pair Amazon eBay

Pros: Erin reported 49Hz -3dB extension, with useful bass for ordinary music listening. HDMI, phono, USB, optical and Bluetooth connections make the system convenient for TV and music, while app controls and a subwoofer output provide adjustment options. Measured bass extension of 49Hz (-3dB).

Cons: The review found a recessed 2-4kHz region and upper-treble emphasis, producing a scooped balance that a simple treble reduction did not fully fix. Relatively narrow horizontal coverage limits consistency across seats.

Full Klipsch The Sevens review and specifications →

Amplifier Power	200W total (400W peak)
App	Yes (treble/mid/bass EQ, subwoofer output, dynamic bass mode)
Bass Extension (-10dB)	36Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	49Hz (measured, Erin's Audio Corner)
Bluetooth Codecs	SBC, AAC, aptX, aptX HD
Dimensions	16.375"H x 8.125"W x 13.1875"D
Drivers	6.5" high-excursion woofer, 1" titanium tweeter on Tractrix horn
Inputs	HDMI, Phono, 3.5mm, USB, Optical, Bluetooth
Outputs	Subwoofer
Subwoofer Output	Yes
Weight	22.3 lbs (10.1 kg) (primary), 19.8 lbs (9 kg) (secondary)
Woofer Cabinet	ported, rear flared port

Check current price at Amazon ($999.99) →Search eBay for Klipsch The Sevens →

Links
- Official Klipsch The Sevens Product Page
Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Klipsch The Sevens Review. More from Erin’s Audio Corner →
- Audio Science Review: Klipsch The Sevens - Review & Measurements by Erin More from Audio Science Review →
Head-to-Head Comparisons

Ranked #67 of 67 in Large Size Powered Bookshelf Speakers - Ocean Way Audio HR5: $5,598 per pair Sweetwater eBay

Pros: The active format and substantial drivers can supply useful scale in a studio system. Measured -3dB extension is 52.7Hz, so separate bass support would be appropriate for full-range work. Measured bass extension of 80Hz (-3dB).

Cons: Scores of 1.05 standalone and 3.12 with an ideal subwoofer reflect substantial response unevenness, including severe upper-treble irregularities. Narrowing high-frequency coverage further changes the balance across listening positions. Bass support cannot repair those midrange and treble problems, making this difficult to recommend for neutral monitoring.

Full Ocean Way Audio HR5 review and specifications →

Amplifier Power	215W total (125W LF, 90W HF)
App	No
Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
DSP	No
Dimensions	12H x 17.5W x 14.5D in
Drivers	7" low-frequency driver, 1" high-frequency driver (horn/waveguide)
EQ	No
Frequency Response	45Hz - 20kHz (Manufacturer specified)
Spinorama Preference Score	1.05
Spinorama Preference Score with Perfect Sub	3.12
Weight	37.9 lbs (17.2 kg) each

Check current price at Sweetwater ($2799) →Search eBay for Ocean Way Audio HR5 →

Links
- Official Ocean Way Audio HR5 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Ocean Way Audio HR5 vs Emotiva Airmotiv 6s

Large Size Powered Floorstanding Speakers

Ranked #6 of 6 in Large Size Powered Floorstanding Speakers - B&O Beolab20: $15000 per pair Discontinued Bang-olufsen eBay

Pros: ASR measured bass reaching about 20Hz in a relatively compact enclosure, giving substantial low-end weight without a separate subwoofer. Distortion at ordinary listening levels is respectable for the size. Built-in amplification and Free/Wall/Corner adjustment simplify integration into a compatible home system. Measured bass extension of 20Hz (-3dB).

Cons: A 4.88 ideal-subwoofer preference score shows that deep bass does not compensate for the tonal flaws. A roughly 5dB dip near 7kHz and uneven vertical response make treble balance sensitive to ear height. Midrange distortion rises at higher playback levels, with resonance-related problems around 700-800Hz and 5kHz. Difficult to recommend for neutral monitoring at its premium price. Discontinued.

Full B&O Beolab20 review and specifications →

Amplifier Power	640W (160W tweeter + 160W midrange + 320W dual woofer)
App	Yes (B&O app)
Bass Extension (-10dB)	<20Hz (measured, Audio Science Review)
Bass Extension (-3dB)	20Hz (measured, Audio Science Review)
Bluetooth	No
DSP	Yes (Digital Sound Engine)
Dimensions	15.5"W x 32.3"H x 12"D (393.7 x 820.4 x 304.8 mm)
Discontinued	Yes
Drivers	10" driver woofer, 5" driver midrange, 0.75" Acoustic Lens tweeter
EQ	Yes (Room adaptation: Free/Wall/Corner)
Frequency Response	19.5Hz - 23.6kHz (Manufacturer specified)
Inputs	PowerLink (RJ45), RCA, TOSLINK optical, WiSA wireless
Maximum SPL	108dB @ 1m (manufacturer specified)
Outputs	PowerLink, TOSLINK
Weight	39.7 lbs (18 kg) each
Wi-Fi	Yes (WiSA)

Check current price at Bang-olufsen →Search eBay for B&O Beolab20 →

Links
- Official B&O Beolab20 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Bang & Olufsen Beolab20 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- B&O Beolab20 vs Buchardt A700
- B&O Beolab20 vs KEF LS60

Medium Size Bookshelf Speakers

Ranked #3 of 87 in Medium Size Bookshelf Speakers - Ascend Sierra 1 v2: $1000 per pair Ascendacoustics eBay

Pros: Formaldehyde-free layered bamboo ply cabinet with a 1” dome tweeter over a 5.25” midwoofer, mated by a 4th-order acoustic crossover rather than a stock textbook design. In-room response is extremely linear - the reviewer called it “textbook” - a clear step up from the earlier V1, which had boxiness around 700Hz-1kHz and sibilance around 4-6kHz. Preference score of 8.4 with a subwoofer (6.8 without), which the reviewer calls topnotch. Wide, even horizontal radiation of about ±70° up to 6kHz. Better vertical directivity than its tweeter-to-woofer spacing would suggest, thanks to the steep 4th-order crossover slopes. No mechanical noise, port chuffing, or woofer bottoming even driven to 96dB/1m. In a three-way comparison against the Dynaudio Emit 20 and a Revel bookshelf model (all around $1,000/pair), measured as the most linear of the three and was the reviewer’s personal pick over both, despite the Dynaudio’s deeper bass and higher output capability. Independent ASR Klippel measurements corroborate Erin’s findings: superb off-axis response with only slight on-axis variations, and an in-room response the reviewer called “incredibly smooth and accurate - amazing for a non-DSP speaker.” Distortion above 200Hz at 86dB/1m is very low for the class. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 81.5dB.

Cons: F3 of 55Hz and F10 of 39Hz mean in-room extension tops out in the mid-40s Hz; the reviewer still recommends a subwoofer for full-range material. Diffraction dips appear around 3kHz and 5-6kHz, and the 1” dome tweeter starts beaming above roughly 6.7kHz, narrowing the soundstage radiation in the top octave - a straightforward consequence of dome size rather than a design flaw. At 96dB/1m the 5.25” midwoofer shows increased distortion in the midrange, likely tied to motor topology; high-passing to a subwoofer around 80Hz largely clears it up. Moderate sensitivity (~81-82dB average) with a 7-ohm minimum impedance. ASR’s power-sweep testing found response holds steady up to 96dB SPL/1m, but pushing to 102dB causes midbass below 400Hz to sag with distortion “through the roof” - a harder output ceiling than the 96dB tests alone suggest. Vertical directivity also narrows above about 1kHz, so the reviewer recommends staying at tweeter-axis height for best results.

Full Ascend Sierra 1 v2 review and specifications →

Bass Extension (-10dB)	39Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	55Hz (measured, Erin's Audio Corner)
Dimensions	14.2"H x 7.5"W x 10.5"D (361.9 x 190.5 x 266.7 mm)
Drivers	5.25" proprietary mineral-filled polypropylene cone with cast aluminum frame woofer, 26mm aluminum/magnesium alloy dome tweeter with titanium former (SEAS Titan)
Impedance	8 ohms nominal, 7 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	81.5dB (measured, Erin's Audio Corner)
Spinorama Preference Score	6.28
Spinorama Preference Score with Perfect Sub	8.24
Weight	18.5 lbs (8.4 kg) each
Woofer Cabinet	ported

Check current price at Ascendacoustics →Search eBay for Ascend Sierra 1 v2 →

Ranked #4 of 87 in Medium Size Bookshelf Speakers - KEF LS50 Meta: $1,599.00 per pair Amazon Crutchfield eBay

Pros: Uni-Q concentric driver mounts a 1” vented aluminum dome tweeter at the center of a 5.25” aluminum cone woofer, rated 79Hz-20kHz+. Speaker-to-speaker matching measured tight at roughly 0.5dB deviation between the pair tested, versus 2-3dB seen on some other speakers - likely why imaging stayed so precise. Imaging stays tight and focused even toed out, unlike most coincident designs where toe-out typically diffuses the image, giving more of an oval-shaped soundstage than a hard rectangular boundary. Horizontal and vertical directivity both hold to about ±50° at the -6dB point, so tonality stays consistent across roughly a 100° listening cone. The extended bass shelf is deliberately tuned for near-wall/boundary placement rather than the usual “pull it 3 feet into the room” advice, playing lower without excess boominess when placed close to a wall. At $1,000 (a frequent sale price versus $1,600 list), called a no-brainer for a compact stand-mount speaker. Independent ASR Klippel measurements corroborate this: very good directivity with the on- and off-axis curves tracking closely, and a predicted in-room response the reviewer called “very close to ideal.”. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 83dB.

Cons: F3 of 67Hz and F10 of 42Hz mean it doesn’t get much below 50Hz in-room; a subwoofer is recommended for real bass. A 2-3dB scoop around 2-4kHz shows up in both the listening window and sound power measurements, matching a subjectively noticed lack of attack and vocal clarity that the reviewer wanted to correct with about 2dB of EQ. An on-axis diffraction dip around 8kHz smooths out with about 15° of toe-out (typical for concentric designs, but still present at 0°). Distortion is elevated at low frequencies since the single 5.25” cone shares surface area with the tweeter housing, reducing effective radiating area; multitone distortion crosses the 3% threshold at 96dB/1m, making roughly 88dB or below the safer output ceiling. Moderate sensitivity (~83dB average) needed 2-3dB more amplifier gain than typical in testing. Adding a subwoofer at an 80Hz crossover only helps lower-midrange distortion, not the elevated distortion in the 1-2kHz and above-5kHz regions. ASR’s own Klippel testing found the same pattern in starker terms: THD is very good at 86dB SPL/1m but climbs past 100% in the bass at 96dB SPL/1m, confirming this is not a near-field speaker for high-output bass-heavy material. Cumulative spectral decay (waterfall) also shows a couple of resonances lingering in the 1-2kHz region.

Full KEF LS50 Meta review and specifications →

Bass Extension (-10dB)	43Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	68Hz (measured, Erin's Audio Corner)
Dimensions	11.9"H x 7.9"W x 11"D (302 x 200 x 280.5 mm)
Drivers	130 mm (5.25 in.) aluminium cone woofer, 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption tweeter
Impedance	8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	83dB (measured average, Erin's Audio Corner; 85dB manufacturer specified)
Spinorama Preference Score	4.88
Spinorama Preference Score with Perfect Sub	7.02
Weight	17.2 lbs (7.8 kg) each
Woofer Cabinet	ported, rear

Check current price at Amazon ($1,599.00) →Check current price at Crutchfield ($1599.99) →Search eBay for KEF LS50 Meta →

Ranked #6 of 87 in Medium Size Bookshelf Speakers - XMechanik Mechano23 DIY: $200 per pair DIY parts Madisound (Tweeter) Madisound (Woofer) eBay

Pros: The bass alignment is unusually well damped, with a measured Q of 0.336, among the lowest of any speaker in this catalog, so the -3dB point at 77.6Hz rolls off cleanly instead of building into a resonant bump the way many small ported designs do. On axis deviation measures a tight 0.195dB average, and Audio Science Review’s independent Klippel NFS review called the predicted in room response nearly perfect, with directivity matching that beats some commercial designs costing many times more, all from about $200 in parts. Measured bass extension of 77.6Hz (-3dB), with a measured sensitivity of 85.1dB.

Cons: This is a true DIY project. There is no assembled unit to buy, drivers come from Madisound, the crossover kit comes separately from EZ Speaker Solutions, and the birch plywood cabinet has to be built and finished by hand. Listening window smoothness measures a moderate 0.47 and the sound power directivity index has more variation (standard deviation 4.02) than the tightest speakers in this catalog, so off axis energy isn’t quite as evenly controlled as the excellent on axis figures suggest.

Full XMechanik Mechano23 DIY review and specifications →

Bass Extension (-10dB)	42.4Hz (measured, Audio Science Review)
Bass Extension (-3dB)	77.6Hz (measured, Audio Science Review)
Cabinet Material	18mm Baltic birch plywood
Country	Design origin: United States (ASR forum); assembled by buyer
Dimensions	11.4"H x 6.9"W x 10.4"D (290 x 174 x 263 mm)
Drivers	Scan-Speak Discovery H2606/9200 1" horn loaded textile dome tweeter, SB Acoustics SB13PFCR25-4 5" fiber cone woofer
Enclosure	ported
Port Tuning	Approximately 45Hz
Sensitivity	85.1dB @ 2.83V/1m (measured, Audio Science Review)
Spinorama Preference Score	4.70
Spinorama Preference Score with Perfect Sub	7.16

Check current price at Madisound (Tweeter) (~$48 each) →Check current price at Madisound (Woofer) (~$37 each) →Search eBay for XMechanik Mechano23 DIY →

Links
- Original ASR Design Thread
- EZ Speaker Solutions Crossover Kit
Reviews, Comparisons and Sound Samples
- Audio Science Review: Mechano23 Open Source DIY Speaker Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #8 of 87 in Medium Size Bookshelf Speakers - Arendal 1961 Monitor: $1150 per pair Arendalsound eBay

Pros: A physically robust build the reviewer calls “a little bit of a tank,” delivering low compression, low distortion, and overall really good neutrality - one of the reviewer’s top 10 picks under $1,500 across roughly 250 speakers tested. Works well both as home theater mains and as surrounds. Independent ASR Klippel measurements corroborate the low-distortion finding: THD at 86dB SPL/1m stays well below the reviewer’s audibility threshold, and even at 96dB SPL/1m it stays “far better than most bookshelves” thanks to the built-in high-pass filter that protects the woofers. Measured bass extension of 84Hz (-3dB), with a measured sensitivity of 85.9dB.

Cons: Bass rolls off around 70-80Hz, so it cannot be used as full-range mains for music without a subwoofer, and a sub is recommended for home theater use as well. Vertical radiation window is narrow, typical of MTM (mid-tweeter-mid) layouts - tighter than a standard two-way’s roughly ±20° - so a second home theater row sitting above or below the tweeter axis will hear a noticeably different tonal balance. ASR’s CEA2034 measurements show the response is elevated above 2kHz with resonant peaks around 3kHz and 9kHz, leading the reviewer to predict it will “likely sound bright.” Those same resonances show up as lingering ridges in the cumulative spectral decay (waterfall) at 96dB SPL/1m.

Full Arendal 1961 Monitor review and specifications →

Bass Extension (-10dB)	60Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	84Hz (measured, Erin's Audio Corner)
Crossover Frequency	1500Hz
Dimensions	16.6"H x 6.4"W x 5.9"D (421.6 x 162.6 x 149.9 mm)
Drivers	2 x 5.5" woofers, 28mm tweeter
Impedance	4 ohms nominal (4.1 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	85.9dB (measured average, Erin's Audio Corner)
Spinorama Preference Score	2.48
Spinorama Preference Score with Perfect Sub	5.79
Weight	16 lbs (7.25 kg) each
Woofer Cabinet	sealed

Check current price at Arendalsound →Search eBay for Arendal 1961 Monitor →

Ranked #13 of 87 in Medium Size Bookshelf Speakers - Revel M105: $1500 per pair Discontinued eBay

Pros: CEA2034 spinorama shows an essentially flat on-axis response with only a small 5kHz peak, a smooth listening window, and clean waterfall decay. Wide horizontal dispersion gives flexibility with toe-in. The reviewer called it reference-quality performance with minor EQ correction applied. Measured bass extension of 75Hz (-3dB), with a measured sensitivity of 85dB.

Cons: Low nominal impedance demands a capable amplifier that can handle low-impedance loads. Bass distortion runs high in the 80-250Hz range from woofer displacement, and maximum output is limited compared to larger designs. Discontinued.

Full Revel M105 review and specifications →

Bass Extension (-10dB)	58Hz (measured, Audio Science Review)
Bass Extension (-3dB)	75Hz (measured, Audio Science Review)
Dimensions	14"H x 7.9"W x 9.8"D (355.6 x 200.7 x 248.9 mm)
Discontinued	Yes
Drivers	5.25" aluminum cone woofer, 1" aluminum tweeter with acoustic lens waveguide
Frequency Response	60Hz - 44kHz (+/-3dB) (Manufacturer specified)
Impedance	8 ohms nominal, low minimum
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	5.07
Spinorama Preference Score with Perfect Sub	7.49
Weight	15.4 lbs (7 kg) each
Woofer Cabinet	ported, rear

Search eBay for Revel M105 →

Links
- Official Revel M105 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #16 of 87 in Medium Size Bookshelf Speakers - Elac Carina BS243.4: $1,199 per pair B&H Photo Video ELAC America eBay

Pros: JET folded-ribbon tweeter - ELAC’s signature technology, normally reserved for its pricier lines - mounted over a 5.25” aluminum-cone woofer, a genuinely differentiated tweeter for a sub-$1,200/pair stand-mount. Positively reviewed by Stereophile and The Absolute Sound for fatigue-free treble detail. Measured bass extension of 55.7Hz (-3dB).

Cons: On-axis deviation (aad_on_axis 0.525) and listening-window smoothness (0.269) are middling for this batch - more ripple in the on-axis response than the pricier active options here. Moderate 85dB sensitivity paired with a 4.8-ohm minimum impedance wants a reasonably powerful amp. Bass extension is average for a 5.25” 2-way at 55.7Hz (-3dB) / 41.5Hz (-10dB).

Full Elac Carina BS243.4 review and specifications →

Bass Extension (-10dB)	41.5Hz (measured, spinorama.org)
Bass Extension (-3dB)	55.7Hz (measured, spinorama.org)
Dimensions	8.5" x 12.6" x 9.6" (216 x 319 x 245 mm) each
Drivers	JET folded-ribbon tweeter, 5.25" aluminum cone woofer
Impedance	6 ohm nominal, 4.8 ohm minimum
Sensitivity	85dB (2.83V/1m)
Spinorama Preference Score	3.94
Spinorama Preference Score with Perfect Sub	6.07
Weight	14.8 lbs (6.7 kg) each
Woofer Cabinet	Bass reflex

Check current price at B&H Photo Video ($1,199.00) →Check current price at ELAC America ($1,199.00) →Search eBay for Elac Carina BS243.4 →

Links
- Official Elac Carina BS243.4 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #20 of 87 in Medium Size Bookshelf Speakers - Carmody S2000: $250 per pair eBay

Pros: CEA2034 spinorama shows good response between 100Hz and 3kHz with low room dependency thanks to smooth early-window reflections, plus reasonably wide horizontal beamwidth and directivity. A DIY kit built around a small woofer and tweeter with a 3kHz crossover, priced around $250 per pair before assembly labor. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 84dB.

Cons: Energy falls off above 3kHz with a resonance around 11kHz, and directivity errors show up around the 4-5kHz crossover region. Low 84dB efficiency and an impedance that dips below 4 ohms both call for a capable amplifier. Vertical listening angle is sensitive - move off axis and you fall into a response “ditch” that loses energy.

Full Carmody S2000 review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Dimensions	not published (DIY kit)
Drivers	small woofer + tweeter, 3kHz crossover (DIY kit)
Frequency Response	50Hz - 20kHz (+/-5.9dB); 80Hz - 20kHz (+/-4.1dB) (measured, Audio Science Review)
Impedance	below 4 ohms minimum
Sensitivity	84dB (measured, Audio Science Review)
Weight	not published (DIY kit)
Woofer Cabinet	Baltic Birch plywood

Search eBay for Carmody S2000 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #21 of 87 in Medium Size Bookshelf Speakers - Wharfedale Diamond 12.1: $599 per pair Discontinued eBay

Pros: A budget two-way bookshelf speaker (5” polypropylene woofer, 1” textile dome tweeter) that measures well for its price: harmonic distortion at 86dB stays under 1% THD down to about 60Hz, genuinely good for a 5” mid-woofer. Wide horizontal radiation of about ±60° up to roughly 5kHz before the tweeter starts to beam. Tonally smooth and easy to listen to at moderate volumes, with a pleasant, non-fatiguing character the reviewer said he’d happily recommend to someone who wants noticeably better fit, finish and looks than typical speakers in the $300-400 range. A high-pass crossover around 80Hz meaningfully cleans up midrange multitone distortion, so pairing it with a subwoofer helps more than usual for a speaker this size. Measured bass extension of 61Hz (-3dB), with a measured sensitivity of 84dB.

Cons: A dip of about 3dB in the 1-3kHz crossover region (on-axis, in the predicted in-room response, and even off-axis) gives the speaker a soft, “laid-back” character that noticeably saps attack and transient bite from drums, guitar and other percussive material - possibly an intentional BBC-style dip, but one the reviewer would still prefer tuned flat. Vertical directivity is unusually tight for this class of speaker, holding together only within about ±5° of the tweeter axis before a real hole opens up in the response, so seating height matters a lot more than on most bookshelf designs. Diffraction artifacts around 3kHz and 5kHz show up as differences between the listening-window and on-axis curves. Distortion climbs well past acceptable levels at higher output - harmonic distortion exceeds 3% around 150Hz at 96dB (versus under 1% at 86dB), multitone distortion tops 10% at 96dB/1m, and real compression sets in between 96-102dB (about 1.5dB of lost dynamic range around 300Hz at 102dB/1m, roughly equivalent to 92dB for a pair at 4m in a room) - a genuine limitation on how loud or how far away this speaker can be pushed. Measured average sensitivity (84dB) runs a few dB below the 87dB spec. Only a 5” woofer, so a subwoofer is required for real bass. Discontinued.

Full Wharfedale Diamond 12.1 review and specifications →

Bass Extension (-10dB)	46Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	61Hz (measured, Erin's Audio Corner)
Crossover Frequency	2.6kHz
Dimensions	12.2"H x 7"W x 10.9"D (310 x 178 x 277 mm)
Discontinued	Yes
Drivers	5" advanced polypropylene cone woofer, 1" textile dome tweeter
Impedance	8 ohms nominal (3.9 ohms minimum above 80Hz, measured, Erin's Audio Corner)
Sensitivity	84dB (measured by Erin's Audio Corner; 87dB manufacturer specified)
Spinorama Preference Score	4.10
Spinorama Preference Score with Perfect Sub	6.51
Weight	15 lbs (6.8 kg) each
Woofer Cabinet	ported

Search eBay for Wharfedale Diamond 12.1 →

Ranked #27 of 87 in Medium Size Bookshelf Speakers - Parts Express C-Note: $100 per pair Parts Express eBay

Pros: CEA2034 spinorama shows a reasonably flat response in the critical midrange with good directivity control near the crossover point, courtesy of a waveguide-integrated tweeter. High power handling let it play very loud in a large room with no sign of bottoming out - unusual for a $100 pair. The MDF cabinet felt stout in hand despite the unfinished, DIY flat-pack construction. Measured bass extension of 90Hz (-3dB), with a measured sensitivity of 83dB.

Cons: Reduced bass output and a resonance peak around 700Hz both show up clearly in the measurements; worst-case distortion above 1kHz sits about 40dB below listening level. Ships as unfinished MDF flat-pack cabinets, requiring assembly and finishing (gluing, painting or veneering) before use.

Full Parts Express C-Note review and specifications →

Bass Extension (-3dB)	90Hz (measured, Audio Science Review) - the reviewer explicitly flagged this measurement as unreliable below 70Hz, so no -10dB figure is given
Dimensions	11H x 7.5W x 9.5D in (unfinished MDF flat-pack)
Drivers	Dayton Audio DSA135-8 5" woofer, Dayton ND25FW-4 1" soft dome tweeter (waveguide-loaded)
Frequency Response	43Hz - 20kHz +/-3dB (Manufacturer specified)
Impedance	8 ohms
Power Handling	60W RMS / 120W max
Sensitivity	83dB (2.83V/1m, measured, Audio Science Review)
Weight	not published (DIY kit)
Woofer Cabinet	ported

Check current price at Parts Express ($159.98) →Search eBay for Parts Express C-Note →

Links
- Official Parts Express C-Note Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Parts Express C-Note vs KEF Q150
- Parts Express C-Note vs KEF LS50 Meta

Ranked #28 of 87 in Medium Size Bookshelf Speakers - Wharfedale Diamond 220: $299 per pair Discontinued Wharfedale eBay

Pros: Amir found the on-axis response smooth once the grille is removed, calling grille removal “a huge improvement” since the stock grille caused unusually strong comb filtering around 5kHz. Good horizontal dispersion from the waveguide-loaded tweeter and controlled distortion. After some EQ (a room mode filter and treble shelf), the reviewer called it “a truly hifi speaker” where “every audiophile track…sounded very good,” and said he was “happy to recommend” it for the budget class. Measured bass extension of 117.2Hz (-3dB), with a measured sensitivity of 86.9dB.

Cons: Response rolls off below 200Hz, so a subwoofer is recommended for full-range use. Some port rattling was noted at high volumes, traced to vibration rather than the woofer itself. Best performance requires removing the grille and applying the reviewer’s EQ filters. Discontinued, with only limited remaining stock available direct from Wharfedale. Discontinued.

Full Wharfedale Diamond 220 review and specifications →

Bass Extension (-10dB)	58.0Hz (measured, Audio Science Review)
Bass Extension (-3dB)	117.2Hz (measured, Audio Science Review)
Dimensions	12.4"H x 6.9"W x 8.9"D (315 x 174 x 227 mm)
Discontinued	Yes
Drivers	5" (130mm) woven Kevlar woofer, 1" (25mm) tweeter
Impedance	8 ohms
Sensitivity	86.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified)
Spinorama Preference Score	2.52
Spinorama Preference Score with Perfect Sub	5.76
Weight	11.7 lbs (5.3 kg) each
Woofer Cabinet	ported, bottom-firing into secondary enclosure

Check current price at Wharfedale ($299) →Search eBay for Wharfedale Diamond 220 →

Links
- Official Wharfedale Diamond 220 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #35 of 87 in Medium Size Bookshelf Speakers - Boston Acoustics A25: $299.98 per pair Discontinued eBay

Pros: CEA2034 spinorama is decent once you ignore a peak around 900Hz and a dip around 3kHz - directivity is good enough that the response can be EQed and won’t be too room-dependent. Cabinet fit and finish is well above its price class, and dynamics were strong with no distortion audible even at high volume on well-recorded material. Discontinued, but the reviewer suggests hunting for clearance pricing on remaining stock. Measured bass extension of 90Hz (-3dB), with a measured sensitivity of 85dB.

Cons: A crazy port resonance and a tweeter with a steeper rolloff than the woofer both show up in the near-field driver measurements, creating the 900Hz peak and the crossover-region dip. The rear port itself measured audibly distorted up close, though it wasn’t noticeable from normal listening distance in the reviewer’s room. Discontinued.

Full Boston Acoustics A25 review and specifications →

Bass Extension (-10dB)	55Hz (measured, Audio Science Review)
Bass Extension (-3dB)	90Hz (measured, Audio Science Review)
Dimensions	10.7H x 7.25W x 8.9D in
Discontinued	Yes
Drivers	1" Kortec soft dome tweeter, 5.25" ceramic/glass-fiber polymer mid/woofer
Frequency Response	55Hz - 25kHz (Manufacturer specified)
Impedance	8 ohms nominal
Power Handling	10-150W recommended
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	2.68
Spinorama Preference Score with Perfect Sub	5.34
Weight	10.1 lbs (4.58 kg) each
Woofer Cabinet	ported, rear

Search eBay for Boston Acoustics A25 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #37 of 87 in Medium Size Bookshelf Speakers - PSB Alpha P5: $699 per pair PSB Speakers eBay

Pros: Well-behaved 5.25-inch bookshelf design with excellent 0.113 on-axis smoothness, a nearly flat +0.12dB/octave slope and broad roughly +/-60-degree horizontal coverage. ASR data predicts a 5.37 preference score with a subwoofer and 48Hz in-room extension. Measured sensitivity of 87dB.

Cons: Measured sensitivity is low at roughly 84dB, and the underdamped bass alignment (Q 0.42) trades some weight for control. Directivity-index consistency is middling at 3.67 and the raw no-subwoofer preference score is only 3.12.

Full PSB Alpha P5 review and specifications →

Dimensions	11.4H x 6.7W x 9.5D in
Drivers	0.75" dome tweeter, 5.25" woofer
Enclosure	2-way passive, rear-ported
Impedance	8 ohms
Sensitivity	87dB specified; about 84dB measured
Spinorama Preference Score	3.12
Spinorama Preference Score with Perfect Sub	5.37
Weight	10.1 lbs (4.6 kg) each

Check current price at PSB Speakers ($699/pair) →Search eBay for PSB Alpha P5 →

Links
- PSB Alpha P5 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- PSB Alpha P5 vs KEF Q150

Ranked #42 of 87 in Medium Size Bookshelf Speakers - Dayton Audio MK402X: $97.99 per pair Parts Express eBay

Pros: A compact, inexpensive 4-inch passive pair with an upgraded crossover over the original MK402. ASR measured good on-axis smoothness of 0.193, excellent sound-power smoothness of 0.125, broad horizontal coverage to about +/-60 degrees, and a very well-damped bass alignment Q of 0.24.

Cons: The response tilts bright at +0.20dB per octave and predicted in-room smoothness is a poor 0.18. Estimated in-room extension is 52Hz, sensitivity is low for a passive speaker, and the 4-ohm impedance asks more of a small budget amplifier.

Full Dayton Audio MK402X review and specifications →

Country	United States (design)
Dimensions	9.5H x 5.75W x 6.5D in
Drivers	0.75" dome tweeter, 4" treated-paper woofer
Enclosure	2-way, bass-reflex
Impedance	4 ohms
Sensitivity	84dB
Spinorama Preference Score	3.18
Spinorama Preference Score with Perfect Sub	5.59
Weight	approx. 5.1 lbs (2.3 kg) each

Check current price at Parts Express ($97.99/pair) →Search eBay for Dayton Audio MK402X →

Links
- Dayton Audio MK402X Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Dayton Audio MK402X vs KEF Q150

Ranked #43 of 87 in Medium Size Bookshelf Speakers - JBL Studio 530: $399 per pair Discontinued eBay

Pros: CEA2034 spinorama shows a fairly flat on-axis response. Predicted in-room response is very smooth aside from the high-frequency roll-off. Measured bass extension of 88Hz (-3dB), with a measured sensitivity of 85dB.

Cons: A peak around 1.4kHz is attributed to a tweeter resonance, and shows up as a distinct spike in harmonic distortion at that frequency along with a second resonance-driven bump around 2kHz. Response rolls off in the high frequencies and the tuning is a bit bass-shy overall. Cumulative spectral decay (waterfall) shows the same 1kHz-region resonances lingering in time. Discontinued.

Full JBL Studio 530 review and specifications →

Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	88Hz (measured, Audio Science Review)
Crossover Frequency	1.5kHz
Dimensions	18.4"H x 8.4"W x 8.7"D (467 x 214 x 222 mm)
Discontinued	Yes
Drivers	5.25" (130mm) PolyPlas™ cone woofer with SFG magnet, 1" (25mm) compression driver with Teonex® diaphragm on Bi-Radial® horn
Impedance	6 ohms nominal (4 ohms minimum, measured by Audio Science Review)
Sensitivity	~85dB (measured by Audio Science Review)
Weight	17 lbs (7.7 kg) each
Woofer Cabinet	ported

Search eBay for JBL Studio 530 →

Links
- Official JBL Studio 530 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review JBL Studio 530 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #44 of 87 in Medium Size Bookshelf Speakers - NHT SuperZero 2.1: $269.98 per pair NHT Audio eBay

Pros: A tiny, affordable acoustic-suspension speaker that is easy to place near a wall. ASR measured a 5.50 preference score with a subwoofer, broad horizontal coverage to roughly +/-60 degrees and good 0.111 sound-power smoothness.

Cons: This is intentionally a satellite: estimated in-room extension is only 84Hz and the standalone preference score falls to 2.19. Sensitivity and maximum output are limited, while on-axis smoothness of 0.220 and directivity-index consistency of 3.43 are merely average.

Full NHT SuperZero 2.1 review and specifications →

Country	United States (design)
Dimensions	9H x 5W x 5.5D in
Drivers	1" silk-dome tweeter, 4.5" woofer
Enclosure	2-way acoustic suspension
Impedance	8 ohms nominal
Sensitivity	86dB
Spinorama Preference Score	2.19
Spinorama Preference Score with Perfect Sub	5.50
Weight	approx. 6 lbs (2.7 kg) each

Check current price at NHT Audio ($134.99 each) →Search eBay for NHT SuperZero 2.1 →

Links
- NHT SuperZero 2.1 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- NHT SuperZero 2.1 vs KEF Q150

Ranked #45 of 87 in Medium Size Bookshelf Speakers - Monitor Audio Apex A10: $1,698 per pair Crutchfield eBay

Pros: Compact aluminum-cabinet speaker with a 5.5-inch RST woofer, C-CAM gold-dome tweeter, front HiVe II port and included wall bracket. ASR data shows good 0.153 on-axis smoothness and a 5.13 preference score when crossed to a subwoofer.

Cons: Measured bass extension is only 79Hz and the raw preference score drops to 1.95 without a subwoofer, making one effectively mandatory. The +0.53dB/octave slope is bright-leaning, predicted in-room smoothness is poor at 0.161, and $1,698/pair is expensive for the measured performance.

Full Monitor Audio Apex A10 review and specifications →

Dimensions	11H x 5.9W x 7.1D in with stand
Drivers	1" C-CAM gold-dome tweeter, 5.5" RST woofer
Enclosure	2-way passive aluminum cabinet, front-ported
Impedance	8 ohms nominal
Sensitivity	87dB
Spinorama Preference Score	1.95
Spinorama Preference Score with Perfect Sub	5.13
Weight	8.6 lbs (3.9 kg) each

Check current price at Crutchfield ($849 each) →Search eBay for Monitor Audio Apex A10 →

Links
- Monitor Audio Apex A10 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Monitor Audio Apex A10 vs KEF Q150

Ranked #49 of 87 in Medium Size Bookshelf Speakers - Paradigm Monitor SE Atom: $399.98 per pair Amazon eBay

Pros: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. Bass tuning is well judged, letting the woofer play loud on demanding tracks without bottoming out even without a subwoofer. Paradigm’s NRC research pedigree shows in the horizontal and vertical dispersion measurements. Measured bass extension of 82Hz (-3dB), with a measured sensitivity of 85dB.

Cons: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction. There’s no meaningful bass extension for full-range use, so a subwoofer is effectively required for anything beyond desktop or near-field listening.

Full Paradigm Monitor SE Atom review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82Hz (measured, Audio Science Review)
Dimensions	12.75H x 7.125W x 11D in
Drivers	1" X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5" mineral-filled polypropylene mid/bass
Frequency Response	61Hz - 21kHz +/-3dB (Manufacturer specified)
Impedance	8 ohms
Power Handling	15-100W recommended
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	3.41
Spinorama Preference Score with Perfect Sub	5.77
Weight	11.9 lbs (5.4 kg) each
Woofer Cabinet	ported, rear

Check current price at Amazon ($399.98) →Search eBay for Paradigm Monitor SE Atom →

Ranked #56 of 87 in Medium Size Bookshelf Speakers - Dynaudio Emit M10: $800 per pair eBay

Pros: CEA2034 spinorama shows impressive, headphone-level distortion through the midrange and tweeter at 86dB SPL, with a well-executed port that keeps resonance low below the crossover. 28mm soft dome tweeter and 14cm MSP mid/bass driver. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 83.5dB.

Cons: Tuned toward a mild showroom sound with boosted upper bass and treble and a recessed midrange - the reviewer prefers speakers that get the 100Hz-3kHz range right, which this doesn’t. His verdict: cheaper speakers deliver much more balanced tonality, so he wouldn’t buy it for himself.

Full Dynaudio Emit M10 review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	11.5"H x 6.7"W x 9.4"D (292 x 170 x 240 mm)
Drivers	28mm soft dome tweeter, 14cm MSP mid/bass driver
Frequency Response	50Hz - 23kHz (+/-3dB) (Manufacturer specified)
Impedance	6 ohms nominal
Sensitivity	83.5dB (2.83V/1m, measured, Audio Science Review)
Weight	12.3 lbs (5.6 kg) each
Woofer Cabinet	ported

Search eBay for Dynaudio Emit M10 →

Links
- Official Dynaudio Emit M10 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #57 of 87 in Medium Size Bookshelf Speakers - ELAC BS U5: $856 per pair Discontinued eBay

Pros: This slim three-way coaxial design (an Andrew Jones creation) shows a fairly even on-axis response up to 3kHz, with off-axis behavior notably smoother than the on-axis curve. Predicted in-room response looks like it should give good tonality. Vertical directivity is better than average, a benefit of the coaxial layout. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 83dB.

Cons: Distortion is very high right at both crossover points - around 270Hz (mid-range) and 2700Hz (tweeter) - at both 86dB and 96dB SPL/1m, exceeding 3% at the mid-range crossover. Minimum impedance dips to 3.4 ohms with a possible resonance around 500Hz visible in the impedance/phase curve. Discontinued.

Full ELAC BS U5 review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	13.4"H x 7"W x 11.5"D (339.1 x 178.0 x 293.1 mm)
Discontinued	Yes
Drivers	1" tweeter + 5.25" woofer
Impedance	4 ohms nominal (3.4 ohms minimum)
Sensitivity	83dB (2.83V/1m, measured, Audio Science Review)
Weight	13.2 lbs (6 kg)
Woofer Cabinet	ported, rear

Search eBay for ELAC BS U5 →

Reviews, Comparisons and Sound Samples
- Audio Science Review ELAC BS U5 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #60 of 87 in Medium Size Bookshelf Speakers - Dynaudio X14: $1500 per pair Discontinued eBay

Pros: 1” silk-dome tweeter and 5.7” magnesium-silicate-polymer woofer in a compact two-way stand-mount, rated at 85dB sensitivity. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 82dB.

Cons: CEA2034 spinorama shows an uneven on-axis response from the lack of a waveguide to control tweeter beam width, plus a port resonance that boosts the lower midrange and imperfect crossover matching between the drivers. Too much energy in the lower and upper treble reads as bright, and directivity narrows at higher frequencies rather than staying controlled. The reviewer’s verdict: out of the box, the objective performance isn’t that great, though EQ can make it a satisfying speaker. Discontinued.

Full Dynaudio X14 review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	11.2"H x 6.7"W x 10"D (285 x 170 x 255 mm)
Discontinued	Yes
Drivers	1" silk dome tweeter, 5.7" magnesium-silicate-polymer woofer
Frequency Response	50Hz - 23kHz (+/-3dB) (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	82dB (2.83V/1m, measured, Audio Science Review)
Weight	14.3 lbs (6.5 kg) each
Woofer Cabinet	ported

Search eBay for Dynaudio X14 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #61 of 87 in Medium Size Bookshelf Speakers - Pioneer SP-BS22-LR (Philharmonic AAM Mod): $168 per pair eBay

Pros: This is Dennis Murphy’s “Affordable Accuracy Monitor” (AAM) mod of the discontinued, budget Pioneer SP-BS22-LR: the stock tweeter is swapped for a Peerless BC25TG15 dome and a redesigned 3rd-order crossover is built to match it to the stock 4” woofer. CEA2034 spinorama shows only small variations from a flat on-axis response with some directivity error near the crossover, a marked improvement over the unmodified Pioneer, which the reviewer notes shows much more variation from flat. Distortion at 86dB SPL/1m is reasonably controlled above 200Hz, and tweeter distortion barely rises even at 96dB SPL/1m. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 83dB.

Cons: Some directivity error appears near the crossover frequency. Distortion climbs in the woofer’s range (below 200Hz) at both 86dB and 96dB SPL/1m. Minimum impedance dips to about 5 ohms with a couple of resonance peaks. This is a DIY project, not a finished retail product: Murphy sold ~$168 pre-built pairs for a while but no longer does, so it now requires sourcing a used/discontinued Pioneer SP-BS22-LR pair plus building the crossover and swapping the tweeter yourself. The mod itself is public domain, but there is no current turnkey way to buy this speaker.

Full Pioneer SP-BS22-LR (Philharmonic AAM Mod) review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Crossover Frequency	3000Hz
Dimensions	12.6"H x 7.1"W x 8.5"D (320.0 x 180.0 x 215.0 mm)
Drivers	1x 4" curvilinear-cone woofer (stock Pioneer), 1x Peerless BC25TG15 1" silk dome tweeter (replacement)
Impedance	8 ohms nominal (approx. 5 ohms minimum, measured by Audio Science Review)
Sensitivity	83dB (2.83V/1m, measured by Audio Science Review)
Weight	9 lbs (4.1 kg)
Woofer Cabinet	ported, rear

Search eBay for Pioneer SP-BS22-LR (Philharmonic AAM Mod) →

Ranked #67 of 87 in Medium Size Bookshelf Speakers - ELAC Uni-Fi 2.0 UB52: $599.00 per pair Amazon eBay

Pros: Wide, smooth horizontal directivity - beamwidth holds to about ±60 degrees up to 8kHz before narrowing. Vertical directivity is substantially better than average, giving more listening-height leeway than most two-way bookshelf speakers. Measured bass extension of 55.7Hz (-3dB), with a measured sensitivity of 83.3dB.

Cons: Dipped 3db from 1.5-3khz. On-axis response shelves down above 1.5kHz along with multiple resonances, leading the reviewer to predict it will “likely sound dull.” Nasty resonance at 600hz - audible as an actual buzzing artifact on some recordings (the reviewer demonstrated it with an Eva Cassidy track), and it shows up as a sharp distortion spike exceeding 4% at 585Hz when driven to 96dB SPL/1m. Not recommended.

Full ELAC Uni-Fi 2.0 UB52 review and specifications →

Bass Extension (-10dB)	38.6Hz (measured, Audio Science Review)
Bass Extension (-3dB)	55.7Hz (measured, Audio Science Review)
Crossover Frequency	200Hz / 2000Hz
Dimensions	13.6"H x 7.3"W x 10.8"D (346 x 185 x 275 mm)
Drivers	5.25" aluminum woofer, 4" aluminum midrange, 1" soft dome tweeter
Impedance	6 ohms
Power Handling	140W max
Sensitivity	83.3dB (measured by Audio Science Review; 85dB manufacturer specified)
Weight	7.7 lbs (3.5 kg)
Woofer Cabinet	ported

Check current price at Amazon ($599.00) →Search eBay for ELAC Uni-Fi 2.0 UB52 →

Links
- Official ELAC Uni-Fi 2.0 UB52 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review ELAC Uni-Fi 2.0 UB52 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #68 of 87 in Medium Size Bookshelf Speakers - KEF Q100: $550 per pair Discontinued eBay

Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 85dB.

Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.

Full KEF Q100 review and specifications →

Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Dimensions	11.8"H x 7.1"W x 10.7"D (300 x 180 x 272 mm)
Discontinued	Yes
Drivers	5.25" Uni-Q aluminum coaxial driver, 1" aluminum dome tweeter
Frequency Response	49Hz - 40kHz (+/-3dB) (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Weight	13 lbs (5.9 kg) each
Woofer Cabinet	ported, rear

Search eBay for KEF Q100 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #69 of 87 in Medium Size Bookshelf Speakers - Q Acoustics 3020i: $314.99 per pair Discontinued eBay

Pros: UK-designed (Finkteam) with attractive styling, including recessed binding posts and custom connectors. Vertical directivity is good enough that the tweeter doesn’t need to be exactly at ear level. With EQ correction, especially high-frequency shelving and a sub-40Hz high-pass filter, Amir found performance “improves substantially.”. Measured bass extension of 82.0Hz (-3dB).

Cons: On-axis response shows a rising upper-frequency trend and a dip in the 2-4kHz crossover region alongside two resonance-related dips; a significant resonance appears at 366Hz in the waterfall plot. Horizontal directivity is narrow and uneven due to a woofer/tweeter beamwidth mismatch. Amir cautions the speaker is “merely a distortion generator” if played too low, and its low impedance demands a quality amplifier. Without EQ, Amir “can’t recommend the Q Acoustics 3020i.”. Discontinued; Q Acoustics now sells the 3030i and 3010c in its place. Discontinued.

Full Q Acoustics 3020i review and specifications →

Bass Extension (-10dB)	49.8Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82.0Hz (measured, Audio Science Review)
Crossover Frequency	2.4kHz
Dimensions	10.9"H x 6.7"W x 11.1"D (278 x 170 x 282 mm)
Discontinued	Yes
Drivers	125mm (5") bass driver, 22mm (0.9") tweeter
Impedance	6 ohms nominal, 4 ohms minimum
Sensitivity	86dB (2.83V/1m, manufacturer specified)
Spinorama Preference Score	3.05
Spinorama Preference Score with Perfect Sub	5.57
Weight	10.6 lbs (4.8 kg) each
Woofer Cabinet	ported, reflex

Search eBay for Q Acoustics 3020i →

Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

Ranked #71 of 87 in Medium Size Bookshelf Speakers - Zaph Audio ZA5.2 TM: $383 per pair Madisoundspeakerstore eBay

Pros: CEA2034 spinorama shows a fairly smooth on-axis response. Cumulative spectral decay (waterfall) is clean overall, with only minor lingering energy around 400-700Hz. Measured bass extension of 60Hz (-3dB).

Cons: Predicted in-room response is tilted upward toward the treble, which the reviewer flagged as a likely audible brightness. Low sensitivity of about 82dB requires more amplifier gain than typical. Relative harmonic distortion is excessive in the low frequencies, climbing to 6-8% under a 10-volt test signal in the 60-150Hz region - notably worse than typical two-way designs in this price range. Impedance runs close to 7 ohms through much of the audible range, with additional peaks that make it a moderately demanding load for a low-sensitivity design. Vertical directivity narrows unevenly above about 1kHz, typical of this MTM-adjacent tweeter/woofer spacing.

Full Zaph Audio ZA5.2 TM review and specifications →

Bass Extension (-10dB)	40Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	14"H x 8"W x 9.5"D (355.6 x 203.2 x 241.3 mm)
Drivers	5" ZA14W08 aluminum cone woofer, 1" DQ25SC16-04 titanium dome tweeter
Impedance	8 ohms
Sensitivity	82dB
Spinorama Preference Score	4.53
Spinorama Preference Score with Perfect Sub	6.73
Weight	9.3 lbs (4.2 kg)
Woofer Cabinet	ported, front

Check current price at Madisoundspeakerstore →Search eBay for Zaph Audio ZA5.2 TM →

Links
- Official Zaph Audio ZA5.2 TM Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Zaph Audio ZA5.2 TM More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #72 of 87 in Medium Size Bookshelf Speakers - Micca RB42: $159.99 per pair Amazon eBay

Pros: Curved cabinet fit and finish look closer to a $400-500 speaker than a $150 one. Rated for a wide 15-100W amplifier range with 4-8 ohm compatibility, giving flexibility with modest amplification. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 80dB.

Cons: CEA2034 spinorama shows significant peaks and valleys in the on-axis and listening-window response starting a few kHz up, with excess high-frequency energy the reviewer found fatiguing over time despite an initial impression of “detail.” Off-axis response diverges heavily from on-axis, meaning tonality shifts with room and listening position in ways EQ can’t correct. Distorts and the woofer visibly flaps under moderate volume; low 83dB sensitivity makes it a harder amplifier load than its size suggests.

Full Micca RB42 review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review) - the reviewer noted an artificial boost around 100-300Hz, so true extension may be worse than this on-axis reading suggests
Bass Extension (-3dB)	85Hz (measured, Audio Science Review) - the reviewer noted an artificial boost around 100-300Hz, so true extension may be worse than this on-axis reading suggests
Dimensions	8.7H x 4.9W x 7.9D in
Drivers	4" coated paper woofer, 0.75" silk dome tweeter
Frequency Response	50Hz - 20kHz (Manufacturer specified, typical in-room)
Impedance	4-8 ohms
Power Handling	15-100W each
Sensitivity	80dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	3.68
Spinorama Preference Score with Perfect Sub	5.97
Weight	6 lbs (2.7 kg) each (per retailer listing)
Woofer Cabinet	ported, front

Check current price at Amazon ($159.99) →Search eBay for Micca RB42 →

Links
- Official Micca RB42 Product Page
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

Ranked #74 of 87 in Medium Size Bookshelf Speakers - Verdant Audio Bambusa AL-1: $7000 per pair Discontinued eBay

Pros: Distortion above 100Hz stays close to the noise floor at 96dB SPL/1m, quite low for a compact two-way. Measured bass extension of 70.3Hz (-3dB), with a measured sensitivity of 86.1dB.

Cons: CEA2034 spinorama and predicted in-room response both show too little bass output for its small 3” woofer, a real limitation for a $7,000/pair speaker. Cumulative spectral decay (waterfall, including room modes) shows a number of resonances lingering through the bass and lower midrange. Overpriced for the performance and not recommended. Discontinued.

Full Verdant Audio Bambusa AL-1 review and specifications →

Bass Extension (-10dB)	42.9Hz (measured, Audio Science Review)
Bass Extension (-3dB)	70.3Hz (measured, Audio Science Review)
Discontinued	Yes
Drivers	1" tweeter + 3" woofer
Sensitivity	86.1dB (2.83V/1m, measured by Audio Science Review)
Spinorama Preference Score	4.14
Spinorama Preference Score with Perfect Sub	6.22
Weight	31.3 lbs (14.2 kg)

Search eBay for Verdant Audio Bambusa AL-1 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Verdant Audio Bambusa AL-1 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #75 of 87 in Medium Size Bookshelf Speakers - JBL Stage A130: $399 per pair Discontinued eBay

Pros: More constant, better-behaved directivity than the smaller A120 once past the tweeter crossover point, giving a more consistent radiation pattern that likely explains some of its positive reception among other reviewers. Distortion at 96dB measures slightly better than a direct competitor (Emotiva Airmotiv B1+) in the low end, though slightly worse at high frequencies. The tweeter itself sounded decent to the reviewer, who considers it a reasonable value at its price point despite other reservations. Wide, well-filled horizontal radiation through the midrange. Measured bass extension of 66Hz (-3dB), with a measured sensitivity of 85.2dB.

Cons: Still shows the same underlying “Batman”-shaped response pattern as the A120: a bass bump, a midrange dip, a cabinet-resonance peak around 800Hz-1.7kHz (confirmed via accelerometer testing on the cabinet panels), and roughly a 5dB treble bump around 10kHz. Does not include a port bung, so sealed-cabinet listening requires DIY stuffing rather than a proper factory solution. The reviewer’s own measurements notably diverge from another well-known publication’s results on this same model, possibly reflecting a running production change, though this couldn’t be confirmed. Overall sound quality struck the reviewer as not a good-sounding speaker despite the more favorable measurements relative to the A120. Output-limited at extreme volumes (102dB), similar to its smaller sibling. Loses to the similarly-priced Emotiva Airmotiv B1+ in overall linearity and neutrality, according to the reviewer’s direct comparison. Discontinued.

Full JBL Stage A130 review and specifications →

Bass Extension (-10dB)	50Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	66Hz (measured, Erin's Audio Corner)
Crossover Frequency	3.2kHz
Dimensions	12.6"H x 7.5"W x 9.1"D (321 x 190 x 230 mm)
Discontinued	Yes
Drivers	5.25" (133mm) polycellulose woofer, 1" (25mm) aluminum dome tweeter
Impedance	6 ohms nominal, about 4.3 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	85.2dB (measured, Erin's Audio Corner)
Spinorama Preference Score	3.26
Spinorama Preference Score with Perfect Sub	5.73
Weight	12 lbs (5.45 kg) each
Woofer Cabinet	ported

Search eBay for JBL Stage A130 →

Ranked #76 of 87 in Medium Size Bookshelf Speakers - Fluance Signature HFS: $199.99 per pair Amazon eBay

Pros: Front-facing port and pre-installed wall-mount brackets make it flexible for bookshelf or surround/height duty. Distortion in the low end is well controlled per the measurements, and the glossy front baffle adds a touch of style well beyond the budget price. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 86dB.

Cons: CEA2034 spinorama shows serious flaws in the midrange - both the direct sound and the directivity are compromised, a combination the reviewer flagged as poor for controlled listening tests. Multiple attempted EQ fixes “could not rescue” the sound, and the reviewer said the result was “close” to the lowest possible rating. Online reviews seeded by the company were positive; the reviewer’s measured and subjective experience was not.

Full Fluance Signature HFS review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	12.8H x 7.87W x 8.22D in
Drivers	1" neodymium silk dome tweeter (ferrofluid cooled), 5" glass-fiber-treated woofer (butyl rubber surround)
Impedance	8 ohms
Power Handling	30-120W recommended
Sensitivity	86dB (2.83V/1m, measured, Audio Science Review)
Weight	9.7 lbs (4.4 kg) each
Woofer Cabinet	ported, front

Check current price at Amazon ($199.99) →Search eBay for Fluance Signature HFS →

Links
- Official Fluance Signature HFS Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #77 of 87 in Medium Size Bookshelf Speakers - JBL Control 1 Pro: $164 per pair Parts Express eBay

Pros: Magnetically shielded transducers and a rugged molded enclosure make it a durable choice for wall-mount or install use, with SonicGuard overload protection built into the crossover. Feels solidly built despite the low price, and the professional crossover network uses steep slopes. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 87dB.

Cons: Sound power and predicted in-room response measurements are badly uneven compared to the JBL 305P Mark II tested alongside it, with no waveguide to control directivity as the woofer beams before handing off to the tweeter. The reviewer performed no distortion or dedicated listening test on this unit and concluded he didn’t “think there is a reason to purchase it” over a proper studio monitor at a similar price.

Full JBL Control 1 Pro review and specifications →

Bass Extension (-10dB)	55Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	9.3H x 6.3W x 5.6D in
Drivers	5.25" low frequency driver, 0.75" polycarbonate dome tweeter
Frequency Response	80Hz - 20kHz -10dB (Manufacturer specified)
Impedance	4 ohms
Power Handling	150W
Sensitivity	87dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	2.11
Spinorama Preference Score with Perfect Sub	5.60
Weight	4 lbs (1.8 kg) each
Woofer Cabinet	sealed

Check current price at Parts Express ($240) →Search eBay for JBL Control 1 Pro →

Links
- Official JBL Control 1 Pro Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #78 of 87 in Medium Size Bookshelf Speakers - Polk T15: $149.00 per pair Amazon eBay

Pros: Extremely affordable 2-way design that actually measured better at +/-20 degrees vertical off-axis than directly on-axis. In near-field desktop use, the reviewer found the T15 “didn’t sound that horrible,” partly because nearby desk reflections mask the frequency response dip. Measured bass extension of 88.6Hz (-3dB).

Cons: Spinorama analysis reveals what Amir called a “horrific drop in upper mids/lower treble region of 3 to 6 kHz,” likely from tweeter-woofer phase cancellation directly on-axis. Measured impedance ranges from 4-8 ohms, contradicting the specified 6-8 ohm range, and there’s a distortion peak around 400Hz. On- and off-axis response “vary a ton,” making listening position unusually important. The reviewer recommends saving up for the Pioneer SP-BS22-LR instead: “I can’t justify recommending the Polk T15 even though subjective performance was not horrible.”

Full Polk T15 review and specifications →

Bass Extension (-10dB)	58.1Hz (measured, Audio Science Review)
Bass Extension (-3dB)	88.6Hz (measured, Audio Science Review)
Dimensions	10.63H x 6.5W x 7.25D in
Drivers	0.75" tweeter, 5.25" woofer
Frequency Response	60Hz - 24kHz (Manufacturer specified)
Impedance	8 ohms nominal
Spinorama Preference Score	-0.18
Spinorama Preference Score with Perfect Sub	2.87
Weight	8.2 lbs (3.74 kg) each

Check current price at Amazon ($149.00) →Search eBay for Polk T15 →

Links
- Official Polk T15 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #79 of 87 in Medium Size Bookshelf Speakers - Definitive Technology ProMonitor 1000: $249.00 per pair Amazon eBay

Pros: Bass distortion is well controlled per the measurements, and the slow bass rolloff means it can be pushed fairly hard for its size. Ships with a footer that keeps the small cabinet planted despite its light weight. Measured bass extension of 95Hz (-3dB), with a measured sensitivity of 86dB.

Cons: CEA2034 spinorama shows severely reduced bass energy between 40-120Hz, a directivity mismatch between the tweeter and woofer, and a severe resonance/interference issue around 14kHz. Distortion at 96dB SPL was so bad the reviewer limited testing to 86dB. Direct comparison to a $118/pair Pioneer SP-BS22-LR left the reviewer calling the $500/pair ProMonitor 1000 “a bad experiment that should be forgotten” and concluding “there is nothing Pro about it.”

Full Definitive Technology ProMonitor 1000 review and specifications →

Bass Extension (-10dB)	80Hz (measured, Audio Science Review)
Bass Extension (-3dB)	95Hz (measured, Audio Science Review)
Dimensions	10.88H x 6.25W x 6.5D in
Drivers	1" aluminum dome tweeter, 5.25" BDSS mid/woofer, 5.25" planar bass radiator
Frequency Response	47Hz - 30kHz (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	86dB (2.83V/1m, measured, Audio Science Review - reviewer noted this vs. a manufacturer spec of 91dB)
Weight	7.3 lbs (3.29 kg) each
Woofer Cabinet	passive radiator

Check current price at Amazon ($249.00) →Search eBay for Definitive Technology ProMonitor 1000 →

Ranked #80 of 87 in Medium Size Bookshelf Speakers - Sehlin Helium: $140 per pair eBay

Pros: An entire pair of drivers and crossover parts costs about $140, with a Parts Express flat-pack enclosure keeping the build simple - genuinely small enough to fit in the palm of a hand. Measured bass extension of 170Hz (-3dB), with a measured sensitivity of 82dB.

Cons: CEA2034 spinorama shows an uneven response that the designer’s own re-measurements confirmed rather than explained away as error. The reviewer described the sound as muffled, boomy, and gritty even up close, concluding “this is a failing attempt” relative to larger designs. Maximum output is limited to about 80dB SPL, well below normal listening levels for most rooms.

Full Sehlin Helium review and specifications →

Bass Extension (-10dB)	approx. 70Hz (measured, Audio Science Review) - low confidence - this tiny single-driver design has a highly irregular response with a deep notch around 30Hz, not a simple monotonic rolloff
Bass Extension (-3dB)	approx. 170Hz (measured, Audio Science Review) - low confidence - this tiny single-driver design has a highly irregular response with a deep notch around 30Hz, not a simple monotonic rolloff
Dimensions	6.5W x 4.5H x 5D in (0.04 cu. ft. enclosure)
Drivers	Dayton Audio ND91-4 3.5" full-range driver (single-driver design)
Sensitivity	approx. 82dB (2.83V/1m, measured, Audio Science Review - low confidence, irregular response with no clear flat region)
Weight	not published (DIY kit)
Woofer Cabinet	sealed

Search eBay for Sehlin Helium →

Links
- Official Sehlin Helium Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #81 of 87 in Medium Size Bookshelf Speakers - Ascend Sierra Luna: $1,176 per pair superseded by Luna V2, Discontinued eBay

Pros: Ribbon tweeter and a dense, low-resonance bamboo cabinet give it well-controlled horizontal directivity, since the driver sizes blend together effectively. Solid build quality and impressive power handling for such a compact enclosure. Measured bass extension of 88.9Hz (-3dB), with a measured sensitivity of 80.9dB.

Cons: Dramatic peaks in the bass region around 400Hz, 800Hz, and 1.2kHz - Amir questioned, “A woofer doesn’t dance up and down so sharply by itself in a few hundred hertz?” The port resonates excessively, actually exceeding the woofer’s own output and creating problematic bass “horns.” Measured sensitivity of 80.9dB falls well short of the 83dB spec, requiring about 6dB more amplifier gain than typical speakers. Vertical directivity is poor, making tweeter-height listening position critical. Initial impressions were bright and fatiguing; even after aggressive EQ, Amir called the result “still a bit too bright but much more manageable” and could not recommend the speaker standalone. Discontinued.

Full Ascend Sierra Luna review and specifications →

Bass Extension (-10dB)	52.1Hz (measured, Audio Science Review)
Bass Extension (-3dB)	88.9Hz (measured, Audio Science Review)
Dimensions	10.5H x 5.75W x 6D in
Discontinued	Yes
Drivers	Custom RAAL true ribbon tweeter (10mm), 4.5" long-throw dual compliant CURV woofer
Frequency Response	60Hz - 27kHz (+/-3dB) (Manufacturer specified)
Sensitivity	80.9dB (2.83V/1m, measured, Audio Science Review; 83dB manufacturer specified)
Weight	9 lbs (4.1 kg) each
Woofer Cabinet	ported, front

Search eBay for Ascend Sierra Luna →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audioholics Demo Report
Head-to-Head Comparisons

Ranked #82 of 87 in Medium Size Bookshelf Speakers - Pioneer Elite SP-EBS73-LR: $749 per pair Discontinued eBay

Pros: Unique dual-driver design combines a front-facing 3-way speaker with an up-firing 2-way Dolby Atmos coaxial driver in one cabinet, designed by Andrew Jones. With corrective EQ applied, the reviewer found “substantially more brilliance and detail,” and the up-firing Atmos driver produced “remarkable” spatial effects from a single box. Measured bass extension of 64.5Hz (-3dB).

Cons: A wide dip between 3-10kHz makes the front speaker sound “somewhat dull” without EQ, and impedance dips below 4 ohms demand a capable amplifier. Distortion is elevated at the crossover points, around 180Hz and 2600Hz. Amir concluded: “The hole in frequency response and high distortion around the crossover point rule out this speaker for any kind of hifi use, certainly at these prices.” Long discontinued. Discontinued.

Full Pioneer Elite SP-EBS73-LR review and specifications →

Bass Extension (-10dB)	45.9Hz (measured, Audio Science Review)
Bass Extension (-3dB)	64.5Hz (measured, Audio Science Review)
Dimensions	15.7H x 7.4W x 9.7D in
Discontinued	Yes
Drivers	5.25" aluminum-cone woofer, 2x 4" aluminum-cone midrange, 2x 1" silk dome tweeter (front 3-way + up-firing 2-way Atmos coaxial)
Impedance	below 4 ohms minimum
Sensitivity	85dB (manufacturer specified)
Spinorama Preference Score	2.35
Spinorama Preference Score with Perfect Sub	4.66
Weight	15.7 lbs (7.1 kg) each

Search eBay for Pioneer Elite SP-EBS73-LR →

Ranked #85 of 87 in Medium Size Bookshelf Speakers - Klipsch R-41M: $139.12 per pair Amazon eBay

Pros: Binding posts are unusually nice for the price point, and impedance is well controlled in the bass, easing the load on the amplifier. The horn-loaded tweeter can play loud without strain. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 85dB.

Cons: CEA2034 spinorama shows a sharp, prominent peak around 1kHz that the reviewer compared to “Pinocchio’s nose,” plus poor directivity that makes the off-axis sound diverge sharply from on-axis. Sensitivity is only 85dB through most of the music-energy range despite Klipsch’s horn-loaded reputation for efficiency. In an A/B against a $118/pair Pioneer SP-BS22-LR, the R-41M had “no bass” and all mid-to-treble energy; the reviewer’s verdict was “please avoid the Klipsch R-41M unless you just want a speaker as an ornament.”

Full Klipsch R-41M review and specifications →

Bass Extension (-10dB)	55Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Dimensions	11.3H x 5.75W x 7.9D in
Drivers	4" spun-copper IMG woofer, 1" Tractrix horn-loaded aluminum dome tweeter
Frequency Response	68Hz - 21kHz (Manufacturer specified)
Impedance	8 ohms nominal (per spec; measured lower)
Power Handling	50W RMS / 200W peak
Sensitivity	85dB (2.83V/1m, measured)
Weight	7 lbs (3.18 kg) each
Woofer Cabinet	ported, rear

Check current price at Amazon ($139.12) →Search eBay for Klipsch R-41M →

Links
- Official Klipsch R-41M Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #86 of 87 in Medium Size Bookshelf Speakers - PMC twenty.21: $2,000 per pair superseded by twenty5.21, Discontinued eBay

Pros: Transmission-line loaded design with a proprietary PMC/SEAS SONOLEX soft dome tweeter and doped mid/bass driver, reflecting PMC’s high-end British studio-monitor pedigree. Measured bass extension of 68.8Hz (-3dB).

Cons: Amir was blunt: “The PMC Twenty.21 is a failure in design,” asking, “Did different people design different parts of the speaker and never talked to each other?” On-axis response is highly problematic, and the lack of a tweeter waveguide causes severe beamwidth compression that makes the speaker highly room-sensitive. Dual bass peaks indicate improper port tuning, with the port bump at 100Hz compounding rather than compensating for existing woofer peaks. Distortion is elevated throughout, spiking further at 96dB SPL near 200Hz from port noise. Initial listening was “screechy bright” enough to trigger the reviewer’s tinnitus, with harsh, lispy vocals and tubby, unnatural bass; only heavy manual EQ made it acceptable. At $2,000, Amir suspects the tuning was done “by ear” rather than with measurements. Discontinued.

Full PMC twenty.21 review and specifications →

Bass Extension (-10dB)	48.7Hz (measured, Audio Science Review)
Bass Extension (-3dB)	68.8Hz (measured, Audio Science Review)
Dimensions	12.8"H x 6"W x 10.9"D (325 x 152 x 277 mm) (+6mm grille)
Discontinued	Yes
Drivers	5.5" (140mm) doped mid/bass driver with cast alloy chassis, 27mm PMC/SEAS SONOLEX soft dome tweeter (ferrofluid cooled)
Frequency Response	50Hz - 25kHz, +/-4.4dB (Manufacturer specified)
Impedance	8 ohms
Sensitivity	83dB (1W/1m, manufacturer specified)
Spinorama Preference Score	2.33
Spinorama Preference Score with Perfect Sub	5.08
Weight	11 lbs (5 kg) each
Woofer Cabinet	transmission line, 1.72m effective length

Search eBay for PMC twenty.21 →

Links
- Archived Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #87 of 87 in Medium Size Bookshelf Speakers - Ascend Sierra Luna Duo: $1,624 per pair superseded by Luna Duo V2, Discontinued eBay

Pros: Adding a second Luna woofer improves efficiency and reduces distortion versus the standard Sierra Luna, and the RAAL ribbon tweeter carries over. Flexible orientation lets it work vertically as a main/LCR speaker or horizontally as a center channel. Measured bass extension of 85.0Hz (-3dB), with a measured sensitivity of 84.9dB.

Cons: Amir called it “one of the worse measuring and sounding [speakers] I have tested out of near 100 this year” and stated he “can not in any form or fashion recommend the Ascend Sierra Luna Duo.” On-axis response shows significant midrange irregularities, off-axis performance is uneven, and the port design creates notable frequency response disturbances. Vertical directivity has an extremely narrow optimal listening window. The reviewer noted a stark contrast with the Revel M105, which showed clearly superior tonality and clarity. Discontinued.

Full Ascend Sierra Luna Duo review and specifications →

Bass Extension (-10dB)	52.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85.0Hz (measured, Audio Science Review)
Discontinued	Yes
Drivers	Custom RAAL true ribbon tweeter, dual 4.5" long-throw dual compliant CURV woofers
Sensitivity	84.9dB (2.83V/1m, measured, Audio Science Review)
Woofer Cabinet	ported, front

Search eBay for Ascend Sierra Luna Duo →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Large Size Bookshelf Speakers

Ranked #9 of 130 in Large Size Bookshelf Speakers - Revel M106: Discontinued eBay

Pros: CEA2034 spinorama shows a fairly even on-axis response with no obvious resonances, and a listening window that sits comfortably above the on-axis curve. Predicted in-room response is called “near ideal” by the reviewer, with a smooth downward slope from bass to treble. Distortion at 96dB SPL/1m stays well controlled through the midrange and treble. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 86dB.

Cons: Some directivity error and response variation shows up in the crossover region. Horizontal beamwidth of about ±50 degrees is on the narrower side. Vertical directivity requires staying within about ±20 degrees of the reference axis for accurate tonal balance. Minimum impedance dips to 4.6 ohms with several peaks, a moderately demanding load for a compact bookshelf speaker. Discontinued.

Full Revel M106 review and specifications →

Bass Extension (-10dB)	43Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	15"H x 8.3"W x 11"D (381.0 x 210.8 x 279.4 mm)
Discontinued	Yes
Drivers	6.5" (16.5 cm) Aluminum Cone, Cast-frame Woofer, 1" (2.5 cm) Aluminum Tweeter with Acoustic Lens Waveguide
Impedance	4 ohms
Sensitivity	86dB (measured, Audio Science Review)
Spinorama Preference Score	4.85
Spinorama Preference Score with Perfect Sub	7.10
Weight	9.9 lbs (4.5 kg)
Woofer Cabinet	ported, rear

Search eBay for Revel M106 →

Links
- Official Revel M106 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel M106 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #12 of 130 in Large Size Bookshelf Speakers - AsciLab F6B: $980 per pair Ascilab eBay

Pros: Called by the reviewer the best sub-$1000 pair of speakers he’s come across to date. Very good on-axis linearity and directivity for the price, with a large waveguide-loaded 1” aluminum dome tweeter that keeps a two-way design well-behaved through the crossover. Nice midbass punch from a slightly undersized enclosure alignment that gives kick drums extra impact. Solid, unfussy tonal balance overall. Measured bass extension of 56Hz (-3dB), with a measured sensitivity of 85dB.

Cons: A mild sibilance-inducing lift around 6-8kHz, most noticeable on female vocals, paired with a shallow dip in the upper midrange - correctable with a simple 3-band EQ the reviewer provided. In-room bass extension is only about 50-60Hz despite a 6” woofer, trading some low-end reach for that extra midbass punch. Compression and graininess creep in at higher volumes (upper 80s to low 90s dB at 10ft), and directivity (~50-60 degrees horizontal) is narrower than the reviewer’s other current favorite, the Audio First Cadentia 3.

Full AsciLab F6B review and specifications →

Bass Extension (-10dB)	38Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	56Hz (measured, Erin's Audio Corner)
Crossover Frequency	1000Hz
Dimensions	15.7" x 8" x 10.4" (400 x 203 x 265 mm)
Drivers	1" aluminum dome tweeter, 6" fiber cone woofer
Impedance	4 ohms nominal (3.5 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Recommended Power	up to 125W
Sensitivity	85dB (2.83V/1m, measured by Erin's Audio Corner)
Spinorama Preference Score	5.55
Spinorama Preference Score with Perfect Sub	7.50
Weight	16.5 lbs (7.5 kg) each
Woofer Cabinet	Passive radiator loaded

Check current price at Ascilab ($980) →Search eBay for AsciLab F6B →

Links
- Official AsciLab F6B Product Page
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

Ranked #15 of 130 in Large Size Bookshelf Speakers - KEF R3: $2,200 per pair Amazon eBay

Pros: True three-way stand-mount with a 6.5-inch woofer below KEF’s 5-inch Uni-Q midrange/1-inch tweeter. Erin measured approximately 86-87dB/2.83V/1m sensitivity, exceptionally low sub-1% distortion at 86dB and orderly directivity in both planes. The coaxial geometry maintains image stability across seats, while Flexible Port Technology avoids the strong midrange port resonance common to rear-vented competitors. A 110W Parasound drove it successfully in Erin’s listening. Measured bass extension of 35.2Hz (-10dB), with a measured sensitivity of 87dB.

Cons: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover. Narrow high-frequency features and natural Uni-Q narrowing toward the top octave make toe angle audible, although off-axis tracking remains smooth. Sensitivity is moderate, the cabinet weighs almost 30 lb, and this original R3 lacks the Meta successor’s MAT absorber.

Full KEF R3 review and specifications →

Bass Extension (-10dB)	35.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	Approximately 58Hz (manufacturer specified; consistent with Erin's measured roll-off)
Dimensions	16.6"H x 7.9"W x 13.2"D
Drivers	1" tweeter coaxial with 5" midrange; 6.5" woofer
Impedance	8 ohms nominal; suitable for Erin's 4/8-ohm-rated amplifier
Sensitivity	Approximately 86-87dB/2.83V/1m (measured, Erin's Audio Corner)
Woofer Cabinet	ported, rear Flexible Port

Check current price at Amazon ($2,200/pair) →Search eBay for KEF R3 →

Ranked #18 of 130 in Large Size Bookshelf Speakers - AsciLab A6B Passive: €3,790 per pair Audiophonics eBay

Pros: A Purifi 6.5 inch aluminum cone woofer works with two side mounted passive radiators and a Klippel NFS optimized crossover to reach a measured 41.0Hz extension point with an on axis slope of just -0.10dB per octave, essentially flat. On axis deviation measures 0.071dB average, the tightest figure of any speaker added to this catalog from spinorama.org’s current measurement set. Listening window smoothness (0.60) sits in line with AsciLab’s other highly rated bookshelf models already in this catalog. Measured bass extension of 41.0Hz (-3dB).

Cons: 4 ohm nominal impedance and 82dB sensitivity call for a robust amplifier. AsciLab and its resellers frequently list the A6B as sold out or preorder only, and reported prices vary widely by source and region, from roughly $2,900 to over $3,900 per pair, so confirm the current listing before buying. Tweeter material is described inconsistently between sources (alumina ceramic dome versus an SB Acoustics unit), worth verifying directly with a reseller if that detail matters to you.

Full AsciLab A6B Passive review and specifications →

Bass Extension (-10dB)	34.7Hz (measured, Audio Science Review)
Bass Extension (-3dB)	41.0Hz (measured, Audio Science Review)
Country	South Korea
Crossover Frequency	1kHz
Dimensions	15.9"H x 8.7"W x 11.8"D (405 x 220 x 300 mm)
Drivers	1" dome tweeter, 6.5" Purifi aluminum cone woofer, 2x 6.5" Purifi passive radiators
Enclosure	sealed with passive radiators
Impedance	4 ohms nominal
Maximum SPL	102dB full bandwidth, 106dB above 100Hz (manufacturer specified)
Sensitivity	82dB @ 2.83V/1m
Spinorama Preference Score	5.84
Spinorama Preference Score with Perfect Sub	7.57
Warranty	2 years
Weight	27.1 lbs (12.3 kg) each

Check current price at Audiophonics (3790 EUR/pair) →Search eBay for AsciLab A6B Passive →

Links
- AsciLab A6B Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: AsciLab A6B Speaker Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- AsciLab A6B Passive vs Epos ES14N
- AsciLab A6B Passive vs ELAC Debut 3.0 DB63

Ranked #20 of 130 in Large Size Bookshelf Speakers - AsciLab F6Bs: €799 per pair Audiophonics eBay

Pros: A slimmer, sealed, VESA 100 wall mountable variant of AsciLab’s F6B, trading the F6B’s passive radiator for a shallower 15.4cm deep cabinet that can go straight on a wall bracket. The sound power directivity index has the tightest standard deviation, 3.32, of anything in this batch of new additions, meaning off axis energy tracks the on axis response unusually consistently for a sealed 2-way this size, and on axis deviation measures a clean 0.25dB average. Measured bass extension of 82.0Hz (-3dB), with a measured sensitivity of 85.2dB.

Cons: AsciLab’s own site shows the F6Bs sold out, though it remains in stock through resellers like Audiophonics and Tested Audio. Bass extension is measured at 82.0Hz at -3dB, noticeably less than the passive radiator equipped F6B, and listening window smoothness measures only a moderate 0.39. The 4 ohm nominal impedance calls for a reasonably capable amplifier.

Full AsciLab F6Bs review and specifications →

Bass Extension (-10dB)	50.1Hz (measured, Audio Science Review)
Bass Extension (-3dB)	82.0Hz (measured, Audio Science Review)
Country	South Korea
Crossover Frequency	1kHz
Dimensions	14.5"H x 8"W x 6.1"D (368 x 203 x 154 mm)
Drivers	1" aluminum dome tweeter with waveguide and phase plug, 6" fiber cone woofer
Enclosure	sealed
Impedance	4 ohms nominal, 3.7 ohms minimum
Maximum SPL	100dB full bandwidth, 102dB above 100Hz (manufacturer specified)
Mounting	VESA 100 wall mount compatible
Sensitivity	85.2dB @ 2.83V/1m (measured, Audio Science Review)
Spinorama Preference Score	4.35
Spinorama Preference Score with Perfect Sub	7.01
Warranty	2 years
Weight	12.3 lbs (5.6 kg) each

Check current price at Audiophonics (799 EUR/pair) →Search eBay for AsciLab F6Bs →

Links
- AsciLab F6Bs Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review: AsciLab F6Bs Speaker Review More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- AsciLab F6Bs vs Epos ES14N
- AsciLab F6Bs vs ELAC Debut 3.0 DB63

Ranked #29 of 130 in Large Size Bookshelf Speakers - Buchardt Audio S400: €1,800 per pair Discontinued Buchardt Audio eBay

Pros: Compact passive design with a 6-inch aluminum woofer, rear passive radiator and waveguided 0.74-inch tweeter positioned below the woofer. Erin measured F3/F10 at 53Hz/38Hz, approximately 86dB/2.83V/1m sensitivity and smooth, broad horizontal directivity. The waveguide controls crossover handoff effectively, the passive radiator avoids port chuffing, and Erin heard no objectionable narrow-band distortion despite excellent extension for the enclosure volume. Measured bass extension of 53Hz (-3dB), with a measured sensitivity of 86dB.

Cons: The impedance reaches 3.7 ohms (Erin), so a genuinely four-ohm-stable separate amplifier is recommended rather than a basic AVR. Low-frequency distortion naturally rises at high output and the compact woofer cannot supply theater-level deep bass; crossing to a subwoofer protects headroom. Erin measured narrow distortion features above 8-9kHz and vertical lobing outside the intended axis. This is the original S400, distinct from the S400 MKII already ranked. Discontinued.

Full Buchardt Audio S400 review and specifications →

Bass Extension (-10dB)	38Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	53Hz (measured, Erin's Audio Corner)
Discontinued	Yes
Drivers	0.74" waveguided tweeter; 6" aluminum woofer
Impedance	3.7 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	Approximately 86dB/2.83V/1m (measured, Erin's Audio Corner)
Spinorama Preference Score	4.32
Spinorama Preference Score with Perfect Sub	6.51
Woofer Cabinet	sealed with rear passive radiator

Check current price at Buchardt Audio (€1,800) →Search eBay for Buchardt Audio S400 →

Ranked #37 of 130 in Large Size Bookshelf Speakers - Selah Audio Integrity: $750 per pair eBay

Pros: CEA2034 spinorama shows a very good overall on-axis response with wide, even beamwidth and directivity through the midrange from its 3-way design. Nominal impedance sits around 5.5 ohms, an easier load than many small speakers. A tribute design to DIY speaker builder Jeff Bagby, priced at $750 per pair as a kit. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 80.5dB.

Cons: A dip/perturbation around 1.7kHz shows up in both on- and off-axis measurements, correlating with a matching midrange distortion peak at the same frequency. Very inefficient, requiring more amplifier power for the same volume. Susceptible to subsonic content, which can cause massive distortion without a high-pass filter. Requires building the cabinets and installing the drivers yourself.

Full Selah Audio Integrity review and specifications →

Bass Extension (-10dB)	50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	68Hz (measured, Audio Science Review)
Dimensions	not published (DIY kit)
Drivers	Dayton Esoteric woofer, SB Acoustics midrange, tweeter, rear oval passive radiator (3-way)
Impedance	5.5 ohms nominal
Sensitivity	80.5dB (2.83V/1m, measured, Audio Science Review)
Weight	not published (DIY kit)
Woofer Cabinet	sealed with passive radiator

Search eBay for Selah Audio Integrity →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #44 of 130 in Large Size Bookshelf Speakers - JBL HDI-1600: $1980 per pair Discontinued Crutchfield eBay

Pros: CEA2034 spinorama is very flat in the critical mid-to-upper frequencies, with a slight bass boost that should have a good subjective effect and very smooth early-window directivity. Predicted in-room response in a simulated average listening room closely tracks the reviewer’s own preferred target curve. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 85dB.

Cons: A dip appears above 10kHz on-axis. Cumulative spectral decay (waterfall) shows some messiness around the crossover along with a 700Hz resonance. Harmonic distortion rises to nearly 2% right at the 1.9kHz crossover point at 96dB SPL/1m. Discontinued.

Full JBL HDI-1600 review and specifications →

Bass Extension (-10dB)	55Hz (measured, Audio Science Review)
Bass Extension (-3dB)	70Hz (measured, Audio Science Review)
Dimensions	14.6"H x 9.1"W x 11.4"D (370.0 x 230.0 x 288.9 mm)
Discontinued	Yes
Drivers	1" tweeter + 6.5" woofer
Impedance	4 ohms nominal (measured, Audio Science Review)
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Weight	53.4 lbs (24.2 kg)
Woofer Cabinet	ported, rear

Check current price at Crutchfield →Search eBay for JBL HDI-1600 →

Links
- Official JBL HDI-1600 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review JBL HDI-1600 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #47 of 130 in Large Size Bookshelf Speakers - Revel Concerta2 M16: $600 per pair used (about) eBay

Pros: CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz. Predicted in-room response is very nice, with just extra bass and a bit of roll-off above 20kHz - the reviewer calls it “nice!” Distortion is well controlled through most of the range at both test levels. Measured bass extension of 60.1Hz (-3dB).

Cons: Harmonic distortion shows a notable peak around 80Hz and a sharp spike around 350Hz, plus the woofer appears to get a bit unhappy right before handing off to the tweeter. Cumulative spectral decay (waterfall) shows some lingering resonances in the 300Hz-1kHz region. The reviewer cautions not to over-cover the cabinet/grille area with thin fabric, as it can audibly affect the top-end response.

Full Revel Concerta2 M16 review and specifications →

Bass Extension (-10dB)	41.6Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60.1Hz (measured, Audio Science Review)
Dimensions	14.8"H x 8.6"W x 10.8"D (374.7 x 218.4 x 273.3 mm)
Drivers	25mm tweeter + 165mm woofer
Impedance	6 ohms
Sensitivity	86dB
Spinorama Preference Score	4.14
Spinorama Preference Score with Perfect Sub	6.37
Weight	32 lbs (14.5 kg)
Woofer Cabinet	ported, rear

Search eBay for Revel Concerta2 M16 →

Links
- Official Revel Concerta2 M16 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel Concerta2 M16 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #50 of 130 in Large Size Bookshelf Speakers - Arendal Sound 1723 Monitor THX: $2,400 per pair Arendal Sound eBay

Pros: Independent ASR Klippel data shows a narrow 1.8dB reference band, 0.391 listening-window smoothness, and useful bass extension to 48.3Hz at -6dB. Its preference score rises from 4.26 to 6.39 with a subwoofer. Dual 8-inch woofers, a waveguided tweeter, robust HDF construction, and THX Ultra certification suit high-output rooms. Measured bass extension of 63Hz (-3dB).

Cons: The measured on-axis average absolute deviation is 0.979dB and the sound-power directivity-index standard deviation is 3.63, so its response and dispersion are less even than the best alternatives. Bass reaches only 63Hz at -3dB despite the very large cabinet, and the 1.239 low-frequency Q indicates a pronounced alignment. At roughly 60 lb each, these require substantial stands and space.

Full Arendal Sound 1723 Monitor THX review and specifications →

Bass Extension (-10dB)	approximately 37Hz (measured, spinorama.org)
Bass Extension (-3dB)	63Hz (measured, spinorama.org)
Certification	THX Ultra
Drivers	Two 8-inch woofers; 28mm waveguided tweeter
Impedance	4 ohms nominal
Spinorama Preference Score	4.26
Spinorama Preference Score with Perfect Sub	6.39

Check current price at Arendal Sound ($2,400/pair) →Search eBay for Arendal Sound 1723 Monitor THX →

Links
- Official Arendal Sound 1723 Monitor THX Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Arendal Sound 1723 Monitor THX vs Power Sound Audio MT-110-M
- Arendal Sound 1723 Monitor THX vs ELAC Debut 3.0 DB63

Ranked #55 of 130 in Large Size Bookshelf Speakers - ELAC DBR62: $799.00 per pair Amazon Crutchfield eBay

Pros: Two-way design with a 6.5” woofer and 1” dome tweeter in a shallow waveguide, with the tweeter positioned close to the woofer for near-point-source coherence - giving more vertical listening leeway than typical two-ways. Notably forgiving of placement and aiming: sounds good from directly on-axis all the way to 30° of toe-out (parallel with the rear wall), making it more room-independent than many speakers this price. Wide horizontal radiation of about ±70° until the tweeter starts beaming, right in the reviewer’s preferred sweet spot. A mild, wide-Q bass bump centered around 100Hz adds a bit of extra punch that the reviewer personally likes. On-axis linearity within about ±2.5dB, with a strong measured preference score of 5.3. Distortion stays below 3% at both 86dB and 96dB until around 50Hz. Vertical sweet spot of about ±10-20° works well for multi-row home theater seating. The reviewer calls it “the epitome of a good speaker” for its price, with no reservations recommending it. Measured bass extension of 53Hz (-3dB), with a measured sensitivity of 84.3dB.

Cons: A slight recess in the 1-2kHz region reduces vocal presence somewhat compared to other speakers in direct comparison. A mild hot spot around 4-5kHz can read as slight sibilance when pointed directly on-axis. Low-to-mid sensitivity (about 84.3dB) combined with a current draw that behaves like roughly 2.4 ohms between 100-200Hz means it’s best driven by a dedicated 4-ohm-capable amplifier rather than an AVR. A diffraction dip from the baffle edge is visible in measurements - typical of any standard rectangular-baffle speaker and not correctable without a much more expensive curved-baffle design. Multitone distortion testing suggests some potential midrange distortion could be audible on certain material, though the reviewer didn’t personally notice it. Minor resonances appear around 700Hz and 1-1.5kHz, possibly tied to the enclosure, port, or cone/surround edge termination, though their audible impact appears minimal. F3 of 53Hz means a subwoofer is still needed for real bass extension below about 40Hz.

Full ELAC DBR62 review and specifications →

Bass Extension (-10dB)	41Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	53Hz (measured, Erin's Audio Corner)
Dimensions	14.1"H x 8.2"W x 10.8"D (358.1 x 208.3 x 274.3 mm)
Drivers	6.5" Aramid Fiber woofer, 1" soft dome tweeter
Impedance	6 ohms nominal, 5.2 ohms minimum (measured above 80Hz, Erin's Audio Corner)
Sensitivity	84.3dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin's Audio Corner; 86dB manufacturer specified)
Spinorama Preference Score	4.16
Spinorama Preference Score with Perfect Sub	6.35
Weight	18.1 lbs (8.2 kg) each
Woofer Cabinet	ported, front

Check current price at Amazon ($799.00) →Check current price at Crutchfield →Search eBay for ELAC DBR62 →

Ranked #57 of 130 in Large Size Bookshelf Speakers - Definitive Technology Demand D11: $999 per pair Discontinued Amazon eBay

Pros: CEA2034 spinorama shows a mostly flat, well-controlled response - close to class-leading if not for one narrow resonance. Distortion is well controlled and the deep cabinet lets it play loud without bottoming out except on the deepest bass content. Cabinet construction and finish are a clear step above budget speakers. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 87dB.

Cons: A narrow but real ~600Hz jaggy shows up consistently in on-axis and off-axis measurements. Horizontal directivity is uneven because of the offset tweeter position, giving the left and right channels slightly different off-axis energy. There’s a low-frequency rattle/noise at very deep bass levels the reviewer called “horrendous.” Discontinued; the Demand series has moved on to newer models. Discontinued.

Full Definitive Technology Demand D11 review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Dimensions	13H x 7.25W x 12.5D in
Discontinued	Yes
Drivers	6.5" BDSS polypropylene woofer, 1" aluminum dome tweeter (offset), 6x10" oval passive radiator
Frequency Response	48Hz - 24kHz (61Hz - 22kHz -3dB) (Manufacturer specified)
Impedance	8 ohms nominal
Power Handling	20-200W recommended
Sensitivity	87dB (2.83V/1m, measured, Audio Science Review)
Weight	17 lbs (7.7 kg) each
Woofer Cabinet	passive radiator

Check current price at Amazon ($999) →Search eBay for Definitive Technology Demand D11 →

Ranked #58 of 130 in Large Size Bookshelf Speakers - Technics SB-C700: $1,699.99 per pair Value Electronics USA Tube Audio eBay

Pros: Distinctive coincident “Phase Precision Driver”: a 1.9cm dome tweeter mounted at the exact acoustic center of a 16cm flat-diaphragm carbon-fiber/honeycomb-sandwich woofer, giving true point-source geometry. Directivity is unusually symmetric front-to-back and top-to-bottom (both horizontal and vertical average exactly 60°) and spdi_stddev (3.09) is tight for the passive-large tier. Die-cast aluminum chassis and a high-gloss convex “Entasis form” cabinet with side panels up to 42mm thick for extra rigidity. Measured bass extension of 85.0Hz (-3dB).

Cons: 85dB sensitivity paired with a 4-ohm nominal impedance wants a fairly capable amplifier. Bass extension is shallow relative to its 6.5”-class woofer at -3dB (85.0Hz), though it reaches a more usable 40.5Hz at -10dB - a fairly steep low-end rolloff shape once past the reference band. At $1,699.99/pair, some in the ASR community have questioned the value proposition against similarly-measuring alternatives at lower prices.

Full Technics SB-C700 review and specifications →

Bass Extension (-10dB)	40.5Hz (measured, spinorama.org)
Bass Extension (-3dB)	85.0Hz (measured, spinorama.org)
Dimensions	8.7" x 13.2" x 11.3" (220 x 336 x 286 mm) each
Drivers	Coaxial "Phase Precision Driver": 1.9cm dome tweeter + 16cm flat-diaphragm woofer
Impedance	4 ohms
Sensitivity	85dB (2.83V/1m)
Spinorama Preference Score	4.20
Spinorama Preference Score with Perfect Sub	6.33
Weight	18.7 lbs (8.5 kg) each
Woofer Cabinet	Bass reflex

Check current price at Value Electronics ($1,699.00) →Check current price at USA Tube Audio ($1,699.99) →Search eBay for Technics SB-C700 →

Links
- Official Technics SB-C700 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #61 of 130 in Large Size Bookshelf Speakers - HiVi Swans 3.1A Sehlin Sound Solutions mod: $364.99 per pair for the kit (assembly required) Amazon eBay

Pros: CEA2034 spinorama shows a mostly smooth on-axis response for a DIY three-way kit. Horizontal beamwidth of about ±70 degrees is wide and consistent. Distortion stays under control down to 40Hz at 96dB SPL/1m, a strong result for a 6.5” woofer in this class. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 86.5dB.

Cons: Some directivity error appears around 2.1kHz on-axis. Predicted in-room response needs about 1-2dB of correction to fit an ideal target curve. Vertical directivity is just okay, so listening height matters more than with a coincident design. Minimum impedance dips to 3.8 ohms with several peaks, a moderately demanding load. Requires DIY assembly (kit only), with additional Sehlin-mod parts and labor beyond the base kit price.

Full HiVi Swans 3.1A Sehlin Sound Solutions mod review and specifications →

Bass Extension (-10dB)	38Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	16.5"H x 8.5"W x 13"D (420.0 x 215.0 x 330.0 mm)
Drivers	6.5" Kevlar woofer, 2" Dome midrange, 1" Soft Dome tweeter
Impedance	4 ohms nominal, 3.8 ohms minimum (measured, Audio Science Review)
Sensitivity	86.5dB (measured, Audio Science Review)
Weight	13.7 lbs (6.2 kg)
Woofer Cabinet	ported, rear

Check current price at Amazon ($364.99) →Search eBay for HiVi Swans 3.1A Sehlin Sound Solutions mod →

Ranked #62 of 130 in Large Size Bookshelf Speakers - SVS Ultra Bookshelf: $1,200 per pair Discontinued eBay

Pros: Noticeably more tonally neutral than the cheaper SVS Prime Bookshelf, with response staying within about -3dB/+1.5dB on average - a genuine step up in linearity for roughly double the price. Slightly higher sensitivity than the Prime (about 87.8dB) with similarly wide, consistent horizontal radiation. Toeing the speakers out about 30 degrees smooths the in-room response nicely if the on-axis tonal balance runs a bit forward for your taste. Distortion and dynamics hold up well; this is a mature, well-regarded design (roughly a decade old at review time) that’s aged better than many contemporaries. Measured bass extension of 69Hz (-3dB), with a measured sensitivity of 87.8dB.

Cons: Still has a boosted upper mid-range/mid-range area, though less severe than the Prime - the reviewer suspects a baffle-step or tweeter-level issue rather than a resonance, giving mixes a slightly forward, occasionally tinny character. Bass extension is modest for the price (F3 69Hz, F10 48Hz measured) - SVS is clearly counting on you pairing this with one of their subwoofers rather than expecting full-range performance from the bookshelf alone. Measured minimum impedance dips to about 3.8 ohms, so a 4-ohm-stable amplifier is recommended rather than a basic 8-ohm-only AVR. Radiation pattern is wide (around 80°), wider than the reviewer’s typical ~60° sweet spot preference, so acoustic treatment on nearby walls helps tame reflections and keep the off-axis response from diverging too much from on-axis. Discontinued; SVS replaced the Ultra line with the Ultra Evolution series. Discontinued.

Full SVS Ultra Bookshelf review and specifications →

Bass Extension (-10dB)	48Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	69Hz (measured, Erin's Audio Corner)
Dimensions	14.9"H x 8.5"W x 10"D
Discontinued	Yes
Drivers	6.5" composite glass fiber cone woofer, 1" aluminum dome tweeter
Frequency Response	45Hz - 32kHz (manufacturer specified)
Impedance	8 ohms nominal, 3.8 ohms minimum (measured, Erin's Audio Corner)
Recommended Power	20-150W
Sensitivity	87.8dB (measured average, Erin's Audio Corner)
Spinorama Preference Score	5.00
Spinorama Preference Score with Perfect Sub	7.47
Weight	19 lbs (8.6 kg) each

Search eBay for SVS Ultra Bookshelf →

Ranked #65 of 130 in Large Size Bookshelf Speakers - Infinity Reference R162: $500 per pair Discontinued B&H Photo Video eBay

Pros: CEA2034 spinorama shows good directivity with wide, consistent horizontal and vertical response, and blended early reflections that need little room treatment. 1” CMMD waveguide tweeter and 6.5” CMMD woofer, 85.5dB sensitivity. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 87dB.

Cons: Elevated output above 3kHz adds brightness, with a resonance around 700Hz and some distortion near the crossover point. EQ or a simple inline tweeter resistor can tame the treble; the reviewer still called it a very enjoyable system for the price. Discontinued.

Full Infinity Reference R162 review and specifications →

Bass Extension (-10dB)	58Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	15.5"H x 7.9"W x 11.2"D (394 x 200 x 285 mm)
Discontinued	Yes
Drivers	1" CMMD tweeter with waveguide, 6.5" CMMD woofer
Frequency Response	49Hz - 22kHz (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	87dB (2.83V/1m, measured, Audio Science Review)
Weight	17.6 lbs (8 kg) each
Woofer Cabinet	ported

Check current price at B&H Photo Video →Search eBay for Infinity Reference R162 →

Ranked #67 of 130 in Large Size Bookshelf Speakers - NHT C3: $625 per pair Amazon eBay

Pros: An unusual sealed 3-way design at this price, all-aluminum drivers (woofer, midrange dome and tweeter). Independently measured by ASR with excellent sound-power smoothness of 0.136, meaning off-axis behavior stays well controlled, a tight directivity-index standard deviation of 3.05, and a well-damped bass-alignment Q of 0.73 from the sealed cabinet.

Cons: On-axis deviation of 0.427dB is middling, though the tonal balance itself is close to neutral (a slope of just 0.01dB per octave). It’s sold as a single unit on Amazon rather than a matched pair, so pricing and ordering need to account for buying two.

Full NHT C3 review and specifications →

Country	United States (design)
Dimensions	13.75H x 7.5W x 10.125D in
Drivers	6.5" aluminum cone woofer, 2" aluminum dome midrange, 1" aluminum dome tweeter
Enclosure	Sealed (acoustic suspension), 3-way
Impedance	6 ohms nominal, 4 ohms minimum
Sensitivity	87dB @ 2.83V/1m
Spinorama Preference Score	3.63
Spinorama Preference Score with Perfect Sub	6.05
Weight	16.1 lbs (7.3 kg) each

Check current price at Amazon ($625 (single, sold individually)) →Search eBay for NHT C3 →

Links
- NHT C3 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- NHT C3 vs ELAC Debut 3.0 DB63

Ranked #69 of 130 in Large Size Bookshelf Speakers - Polk Signature Elite ES20: $359 per pair B&H Photo Video eBay

Pros: A full-size, efficient 6.5-inch bookshelf pair with unusually deep bass for the price. ASR measured 41Hz estimated in-room extension, a well-damped Q of 0.66, broad horizontal coverage to roughly +/-60 degrees and a 5.54 preference score with a subwoofer.

Cons: Predicted in-room smoothness of 0.238 and directivity-index consistency of 3.81 are average rather than class-leading. The deep cabinet needs substantial shelf or stand space, and its Power Port still requires rear clearance.

Full Polk Signature Elite ES20 review and specifications →

Country	United States (design)
Dimensions	14.8H x 8.5W x 13.8D in
Drivers	1" Terylene dome tweeter, 6.5" polypropylene woofer
Enclosure	2-way, Power Port bass-reflex
Impedance	4/8-ohm compatible
Sensitivity	86dB
Spinorama Preference Score	3.60
Spinorama Preference Score with Perfect Sub	5.54
Weight	17 lbs (7.7 kg) each

Check current price at B&H Photo Video ($359/pair) →Search eBay for Polk Signature Elite ES20 →

Links
- Polk Signature Elite ES20 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Polk Signature Elite ES20 vs ELAC Debut 3.0 DB63

Ranked #72 of 130 in Large Size Bookshelf Speakers - JBL 708i: $3,198 per pair B&H Photo Video eBay

Pros: High-output 8-inch professional monitor with JBL’s compression driver and Image Control Waveguide. In JBL’s intended bi-amplified Crown DCI/DSP configuration, ASR data shows 39Hz extension, controlled roughly +/-50-degree horizontal coverage and a 5.35 preference score with a subwoofer.

Cons: This is not self-powered: achieving the measured active-mode response requires compatible external amplification and JBL processing, adding substantial cost and complexity. On-axis smoothness (0.241), predicted in-room smoothness (0.198) and a 3.47 raw preference score are modest for the system price.

Full JBL 708i review and specifications →

Amplifier Power	External Crown DCI amplifier and JBL DSP required for measured active configuration
Dimensions	17.2H x 9.8W x 11.5D in
Drivers	1" compression driver, 8" woofer
Enclosure	2-way passive/bi-amplified, dual front ports
Maximum SPL	108dB continuous, 114dB peak
Spinorama Preference Score	2.94
Spinorama Preference Score with Perfect Sub	4.89
Weight	25.4 lbs (11.5 kg) each

Check current price at B&H Photo Video ($1,599 each) →Search eBay for JBL 708i →

Links
- JBL Professional 708i Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Active-Mode Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- JBL 708i vs Aoshida Audio Musician Knight I V2
- JBL 708i vs ELAC Debut 3.0 DB63

Ranked #73 of 130 in Large Size Bookshelf Speakers - Aoshida Audio Musician Knight I V2: $2,099 per pair Aoshida Audio eBay

Pros: A substantial 6.5-inch standmount with unusually high measured sensitivity of 88.7dB. ASR’s Klippel data shows excellent sound-power smoothness of 0.125 and a well-damped bass alignment Q of 0.69, with useful in-room extension estimated at 43Hz. Measured sensitivity of 88.7dB.

Cons: The response tilts upward by 0.37dB per octave, so it will sound bright, and predicted in-room smoothness is a poor 0.16. At $2,099/pair it is expensive for a little-known direct-sale brand, and each unusually deep cabinet weighs 35.3 lb.

Full Aoshida Audio Musician Knight I V2 review and specifications →

Country	China
Dimensions	15.4H x 9.1W x 14.3D in
Drivers	1.1" beryllium-dome tweeter, 6.5" magnesium-alloy woofer
Enclosure	2-way, rear-ported
Impedance	4 ohms
Sensitivity	88.7dB measured
Spinorama Preference Score	3.69
Spinorama Preference Score with Perfect Sub	5.77
Weight	35.3 lbs (16 kg) each

Check current price at Aoshida Audio ($2,099/pair) →Search eBay for Aoshida Audio Musician Knight I V2 →

Links
- Aoshida Musician Knight I V2 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Aoshida Audio Musician Knight I V2 vs JBL 708i
- Aoshida Audio Musician Knight I V2 vs ELAC Debut 3.0 DB63

Ranked #78 of 130 in Large Size Bookshelf Speakers - Behringer B2030P: $220 per pair Discontinued eBay

Pros: CEA2034 spinorama shows strong horizontal directivity control, keeping the response nearly constant off-axis through most of the audible spectrum, with a wide beamwidth that eases seating position and toe-in requirements. Distortion measurements hold up well against the pricier Revel M106 at both 86dB and 106dB SPL. With EQ to tame a resonance around 800Hz and a bit of a bass fill, the reviewer called it a “winner” that could play loud without bottoming out. Measured bass extension of 79Hz (-3dB), with a measured sensitivity of 84.5dB.

Cons: A resonance around 800Hz shows up clearly in the on-axis response and the waterfall/CSD plot, and the flat, near-horizontal predicted in-room response makes it sound bright without an equalization target curve. Vertical directivity is only typical, not exceptional. Long discontinued - the reviewer noted you’ll have to hunt for a used pair. Discontinued.

Full Behringer B2030P review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	79Hz (measured, Audio Science Review)
Dimensions	12.5H x 8.4W x 8.3D in
Discontinued	Yes
Drivers	6.75" woofer, 0.75" ferrofluid-cooled tweeter
Frequency Response	75Hz - 21kHz (Manufacturer specified)
Power Handling	up to 100W
Sensitivity	84.5dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	2.39
Spinorama Preference Score with Perfect Sub	5.46
Weight	15.4 lbs (7.0 kg) each
Woofer Cabinet	ported, vertical slot

Search eBay for Behringer B2030P →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #79 of 130 in Large Size Bookshelf Speakers - GoldenEar BRX: $1,499.98 per pair Crutchfield eBay

Pros: A compact premium standmount using GoldenEar’s folded-ribbon tweeter, 6-inch cast-basket woofer and two side-mounted passive radiators. Its measured tonal slope is nearly neutral (-0.10dB/octave), bass alignment is well damped at Q 0.69, and estimated in-room extension reaches 51Hz.

Cons: On-axis smoothness of 0.249, sound-power smoothness of 0.216 and predicted in-room smoothness of 0.29 are all mediocre for $1,500/pair. The 4-ohm load benefits from a capable amplifier.

Full GoldenEar BRX review and specifications →

Country	United States (design)
Dimensions	12.1H x 8.1W x 12.3D in
Drivers	HVFR folded-ribbon tweeter, 6" cast-basket mid/bass driver
Enclosure	2-way with dual side passive radiators
Impedance	4 ohms
Sensitivity	90dB
Spinorama Preference Score	3.29
Spinorama Preference Score with Perfect Sub	5.66
Weight	11.9 lbs (5.4 kg) each

Check current price at Crutchfield ($749.99 each) →Search eBay for GoldenEar BRX →

Links
- GoldenEar BRX Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- GoldenEar BRX vs ELAC Debut 3.0 DB63

Ranked #80 of 130 in Large Size Bookshelf Speakers - Mission LX-3 MKII: £249 per pair Richer Sounds eBay

Pros: A large affordable standmount with a 6.5-inch woofer, 88dB rated sensitivity and useful bass. ASR measured 48Hz estimated in-room extension, a controlled Q of 0.60, a 5.52 subwoofer-assisted preference score and reasonable +/-55-degree horizontal coverage.

Cons: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt. The 345mm-tall, 8.4kg cabinet is bulky and current US availability is limited.

Full Mission LX-3 MKII review and specifications →

Country	United Kingdom (design)
Dimensions	13.6H x 8.9W x 12.1D in
Drivers	1" microfiber-dome tweeter, 6.5" composite-fiber woofer
Enclosure	2-way, bass-reflex
Impedance	8 ohms nominal, 4.1 ohms minimum
Sensitivity	88dB
Spinorama Preference Score	3.26
Spinorama Preference Score with Perfect Sub	5.52
Weight	18.5 lbs (8.4 kg) each

Check current price at Richer Sounds (£249/pair) →Search eBay for Mission LX-3 MKII →

Links
- Mission LX-3 MKII Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Mission LX-3 MKII vs ELAC Debut 3.0 DB63

Ranked #83 of 130 in Large Size Bookshelf Speakers - GR-Research X-LS Encore: $1300 per pair Gr-research eBay

Pros: An amazing value, especially if you managed to snag one of these built by AV123 in the early 2000s for $200-300. CEA2034 spinorama shows a generally flat on-axis response, especially in the listening window. Predicted in-room response is generally smooth and on-target. Distortion at 86dB SPL/1m is pretty clean above 200Hz. Measured bass extension of 64Hz (-3dB), with a measured sensitivity of 84.4dB.

Cons: A slight depression in the upper bass and some peaking in the lower bass shows up on-axis, along with directivity error in the crossover region. Vertical directivity requires staying within about 20 degrees of the tweeter axis. At 96dB SPL/1m distortion becomes “rather unhappy,” with bass distortion, a possible woofer issue around 2kHz, and a tweeter problem above 7kHz. As a DIY kit, it requires building the cabinet and crossover yourself.

Full GR-Research X-LS Encore review and specifications →

Bass Extension (-10dB)	44Hz (measured, Audio Science Review)
Bass Extension (-3dB)	64Hz (measured, Audio Science Review)
Dimensions	13.5"H x 8.5"W x 12.1"D (342.9 x 215.9 x 308 mm)
Drivers	6.5" Peerless M-165 paper composite cone, non-resonant polymer frame woofer, 1" Peerless India T26SG tweeter
Impedance	8 ohms
Sensitivity	84.4dB (measured by Audio Science Review; 87dB manufacturer specified)
Weight	17 lbs (7.7 kg) each
Woofer Cabinet	ported

Check current price at Gr-research →Search eBay for GR-Research X-LS Encore →

Ranked #84 of 130 in Large Size Bookshelf Speakers - Infinity IL10: $160 per pair used, Discontinued eBay

Pros: Impressively flat for a budget bookshelf. Predicted in-room response is good aside from a bit of excess energy here and there. Distortion at 96dB SPL/1m stays low and controlled outside two narrow resonance-driven peaks. Measured bass extension of 59Hz (-3dB), with a measured sensitivity of 86dB.

Cons: Resonances at 600 and 5khz, which show up as distinct distortion spikes at 96dB SPL/1m in the same frequency regions. Discontinued.

Full Infinity IL10 review and specifications →

Bass Extension (-10dB)	44Hz (measured, Audio Science Review)
Bass Extension (-3dB)	59Hz (measured, Audio Science Review)
Dimensions	15.6"H x 8.5"W x 11.5"D (397.0 x 216.0 x 292.0 mm)
Discontinued	Yes
Drivers	6.5" (165mm) woofer
Impedance	6 ohms
Sensitivity	86dB (measured, Audio Science Review)
Weight	14.3 lbs (6.5 kg)
Woofer Cabinet	ported, rear

Search eBay for Infinity IL10 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Infinity IL10 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #87 of 130 in Large Size Bookshelf Speakers - ELAC Debut 2.0 B6.2: $329.00 per pair Amazon Crutchfield eBay

Pros: Reasonably flat on-axis and listening-window response with reasonably even horizontal directivity, holding about ±60° up to roughly 8kHz for consistent stereo width whether aimed directly at the listener or toed out. Its larger-than-typical woofer lets it play very loud with minimal distortion, staying under about 1% THD down to 50Hz at 86dB, and minimum impedance stays a comfortable 5-6 ohms. In-room bass extension reaches about 50Hz without much trouble, enough for a solid kick-drum sound. Takes equalization very well - correcting the on-axis response doesn’t cost sensitivity through the midrange, and the underlying directivity behavior (diffraction, vertical mismatch) is mild enough that EQ alone gets most of the way to a well-balanced sound. Vertical tolerance is asymmetric and fairly forgiving: about 10° above the tweeter axis and 20° below it before tonal balance meaningfully shifts. One reviewer called it “a good speaker” with “a good price” rather than just good-for-the-price, and found it fairly neutral overall in-room. Measured bass extension of 64Hz (-3dB), with a measured sensitivity of 86.5dB.

Cons: A good size resonant peak around 700Hz stands out from an otherwise smooth response and lingers in cumulative spectral decay (waterfall) measurements - in one reviewer’s sighted A/B test, reducing it by about 5dB via EQ made a noticeable but not dramatic difference. Directivity error shows up around 3.3kHz, and the upper-midrange around 4-6kHz stood out as edgy and sharp, almost sibilant at times, in casual listening - the predicted in-room response shows a lack of energy between 1-2kHz and a bit too much above that, which one reviewer thought would sound bright. Distortion at 96dB SPL/1m shows two harmonic peaks the reviewer says “should not be there,” one from woofer breakup around 400Hz and another around 7-8kHz from the tweeter, and multitone distortion approaches 10% in the 500-800Hz range at that output level. Real compression shows up even at moderate volume and worsens at 96dB and above, with the woofer clearly giving up around 60-70Hz - a subwoofer is recommended for anyone wanting to listen loud, since running it full-range at high output costs real dynamic range in the midbass and bass. Don’t place it close to a wall - boundary reinforcement adds a midbass bump that undoes the otherwise smooth, linear response. Getting the best out of it takes EQ (taming the 700Hz peak, filling in the 1-2kHz dip, and trimming the highs).

Full ELAC Debut 2.0 B6.2 review and specifications →

Bass Extension (-10dB)	40Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	64Hz (measured, Erin's Audio Corner)
Dimensions	14.8"H x 7.7"W x 10.6"D (375.0 x 195.0 x 268.0 mm)
Drivers	25mm tweeter + 165mm woofer
Impedance	6 ohms nominal, 5.2 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	86.5dB (measured, Audio Science Review)
Weight	29.1 lbs (13.2 kg)
Woofer Cabinet	ported, front

Check current price at Amazon ($329.00) →Check current price at Crutchfield →Search eBay for ELAC Debut 2.0 B6.2 →

Ranked #93 of 130 in Large Size Bookshelf Speakers - Focal Aria 906: $2,199.00 per pair used, Discontinued Amazon eBay

Pros: CEA2034 spinorama shows very flat bass response, with the reviewer rating overall performance “good.” Predicted in-room response is almost perfect prior to 1kHz. Horizontal dispersion of about ±60 degrees is good and stays even out to about -12dB before getting erratic. Woofer distortion is quite low at 86dB SPL/1m. Measured bass extension of 63Hz (-3dB), with a measured sensitivity of 86.5dB.

Cons: 3dB dip around 2.8khz. Some resonance around 800hz, small directivity error around 7khz. A dip in the upper midrange also shows up in the predicted in-room response. Distortion becomes problematic at 96dB SPL/1m, with a notable peak around 1.3-1.5kHz alongside broader midrange elevation. Discontinued.

Full Focal Aria 906 review and specifications →

Bass Extension (-10dB)	47Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	63Hz (measured, Erin's Audio Corner)
Dimensions	15.4"H x 8.9"W x 11"D (390.0 x 225.0 x 280.0 mm)
Discontinued	Yes
Drivers	26mm tweeter + 165mm mid-woofer
Impedance	4 ohms nominal (4.8 ohms minimum above 80Hz, measured by Erin's Audio Corner)
Sensitivity	86.5dB (measured average, Erin's Audio Corner)
Spinorama Preference Score	3.75
Spinorama Preference Score with Perfect Sub	6.11
Weight	39.9 lbs (18.1 kg)
Woofer Cabinet	ported, front

Check current price at Amazon ($2,199.00) →Search eBay for Focal Aria 906 →

Ranked #94 of 130 in Large Size Bookshelf Speakers - Revel Performa M22: $600 per pair used (about) eBay

Pros: Very flat frequency response from 200hz to 10khz. Distortion is well controlled through most of the range, with only a modest crossover-region bump around 2-4kHz. Measured bass extension of 58Hz (-3dB).

Cons: 3dB bass boost around 100hz. On-axis response also droops below 150Hz and peaks above 4kHz, which the reviewer thought may sound a bit bright/light. Distortion rises substantially below 100Hz when driven hard.

Full Revel Performa M22 review and specifications →

Bass Extension (-10dB)	40Hz (measured, Audio Science Review)
Bass Extension (-3dB)	58Hz (measured, Audio Science Review)
Dimensions	14.5"H x 8.6"W x 11.9"D (368.3 x 219.1 x 301.6 mm)
Drivers	25mm tweeter + 200mm woofer
Impedance	4 ohms
Sensitivity	85dB
Spinorama Preference Score	4.42
Spinorama Preference Score with Perfect Sub	6.37
Weight	41.7 lbs (18.9 kg)
Woofer Cabinet	ported, rear

Search eBay for Revel Performa M22 →

Ranked #100 of 130 in Large Size Bookshelf Speakers - JBL XPL-90: $1,298 per pair used (vintage, late 1980s), Discontinued eBay

Pros: Nearly ruler-flat on-axis response up to 1kHz with even horizontal directivity until the tweeter beams above 10kHz. The reviewer found real strength with vocals and simpler instrumentation, calling it “the first speaker I have liked that has some clear response errors” and “an enjoyable speaker” despite the flaws. Titanium tweeter and internal Monster cable wiring reflect JBL’s higher-end late-1980s engineering. Measured bass extension of 77.6Hz (-3dB), with a measured sensitivity of 85dB.

Cons: Crossover region peaking around 3kHz and treble peaking above 10kHz color the top end, and poor vertical directivity means the tweeter needs to be at ear level. Distortion rises at 96dB SPL, especially around 3kHz. Long discontinued; only available on the used market. Discontinued.

Full JBL XPL-90 review and specifications →

Bass Extension (-10dB)	48.7Hz (measured, Audio Science Review)
Bass Extension (-3dB)	77.6Hz (measured, Audio Science Review)
Dimensions	15.5"H x 9.5"W x 9.8"D (394 x 241 x 248 mm)
Discontinued	Yes
Drivers	6.5" bass/mid driver, 1" titanium dome tweeter
Impedance	6 ohms
Power Handling	100W nominal, 400W max
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Weight	20.1 lbs (9.1 kg) each

Search eBay for JBL XPL-90 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #105 of 130 in Large Size Bookshelf Speakers - KEF Q350: $699.00 per pair Discontinued Amazon eBay

Pros: CEA2034 spinorama shows a reasonably flat on-axis response with excellent directivity, aided by the coaxial Uni-Q driver. Vertical directivity is better than most non-coaxial two-way speakers, another benefit of the concentric design. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 86dB.

Cons: Two resonances at 700Hz and 1.2kHz show up on-axis, alongside an upper-bass boost. Predicted in-room response looks a bit boomy as a result. Distortion climbs substantially in the 100Hz-1kHz range at 96dB SPL/1m, with a distinct resonance-driven peak around 900Hz-1kHz at both test levels. Discontinued.

Full KEF Q350 review and specifications →

Bass Extension (-10dB)	38Hz (measured, Audio Science Review)
Bass Extension (-3dB)	70Hz (measured, Audio Science Review)
Dimensions	14.1"H x 8.3"W x 12"D (358.0 x 210.0 x 306.0 mm)
Discontinued	Yes
Drivers	25mm tweeter + 165mm woofer
Impedance	4 ohms
Sensitivity	86dB (measured, Audio Science Review)
Weight	29.5 lbs (13.4 kg)
Woofer Cabinet	ported, rear

Check current price at Amazon ($699.00) →Search eBay for KEF Q350 →

Links
- Official KEF Q350 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review KEF Q350 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #107 of 130 in Large Size Bookshelf Speakers - Klipsch RP-600M: $364.09 per pair Discontinued Amazon eBay

Pros: More linear horizontal dispersion than the updated RP-600M II - as you move side-to-side, the tonal character changes less, a genuine advantage for off-axis listening consistency. Takes exceptionally well to EQ correction (miniDSP or similar), letting a knowledgeable owner fix its tonal shortcomings without needing to upgrade. Standard 6.5” woofer/horn-tweeter two-way design with reasonably gradual bass rolloff (F3 ~70Hz, F10 ~40Hz) rather than a steep vented-enclosure cutoff. Measured bass extension of 73Hz (-3dB), with a measured sensitivity of 85.2dB.

Cons: A strong, annoying resonance in the lower vocal range around 300Hz stands out clearly (though it can be EQ’d out). Overall tonal balance is notably less neutral than the newer RP-600M II, with a roughly 3-4dB suckout in the estimated in-room response. The waveguide doesn’t extend flush to the baffle edge, increasing diffraction compared to the redesigned version. Klipsch’s marketed sensitivity spec (about 96dB) is a half-space, in-room-style rating roughly 9dB above the true anechoic figure (closer to 85-86dB), which can mislead buyers comparing spec sheets. Elevated treble on-axis, similar to its successor, benefits from toe-out or careful placement. Vertical listening tolerance is limited to about ±10° from the tweeter axis. Still needs a subwoofer for real bass weight; a boost around 120Hz gives kick drums their “tambour” without the underlying “meat.”. Discontinued.

Full Klipsch RP-600M review and specifications →

Bass Extension (-10dB)	40Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	73Hz (measured, Erin's Audio Corner)
Dimensions	15.7"H x 8"W x 11.9"D (398.8 x 203.2 x 302.3 mm)
Discontinued	Yes
Drivers	6.5" Cerametallic cone woofer, 1" titanium LTS vented tweeter with Tractrix horn
Impedance	8 ohms nominal, 3.5 ohms minimum (measured, Erin's Audio Corner)
Sensitivity	85.2dB (measured, Erin's Audio Corner)
Spinorama Preference Score	3.07
Spinorama Preference Score with Perfect Sub	5.01
Weight	16.1 lbs (7.3 kg) each
Woofer Cabinet	ported

Check current price at Amazon ($364.09) →Search eBay for Klipsch RP-600M →

Ranked #110 of 130 in Large Size Bookshelf Speakers - B&W 805S: $2500 per pair Discontinued eBay

Pros: Bass and dynamic performance are strong for the cabinet size, playing very loud with well-controlled bass distortion. Horizontal beamwidth stays reasonably smooth through -6dB. Build quality has enough of a “quality feel” that the reviewer said it kept the speaker from the lowest possible rating. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 86.5dB.

Cons: CEA2034 spinorama shows directivity breaking down badly starting around 1kHz and staying poor to 3kHz - a wide crossover-region flaw the reviewer called “clearly flawed execution” that leaves vocals sounding recessed and masked without EQ correction. A high 4kHz crossover point appears to leave the tweeter’s small sub-enclosure resonating audibly during playback. Discontinued, superseded by the 805 Diamond/805 D4 series. Discontinued.

Full B&W 805S review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Dimensions	16.5H x 9.4W x 13.8D in
Discontinued	Yes
Drivers	1" aluminum dome tweeter, 6.5" woven Kevlar cone mid/bass
Frequency Response	49Hz - 22kHz +/-3dB (-6dB at 42Hz and 50kHz) (Manufacturer specified)
Impedance	8 ohms nominal (3.7 ohms minimum)
Power Handling	50-120W
Sensitivity	86.5dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	3.34
Spinorama Preference Score with Perfect Sub	5.28
Weight	25.4 lbs (11.5 kg) each
Woofer Cabinet	ported, rear

Search eBay for B&W 805S →

Links
- Official B&W 805S Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #112 of 130 in Large Size Bookshelf Speakers - Fosi Audio SP601: $399.99 per pair Amazon Fosiaudio eBay

Pros: Two-way bookshelf design with a 6.5” paper/aluminum-alloy composite cone woofer and 1.5” silk dome tweeter. Bass reaches a respectable 60-70Hz in most rooms (F3 59Hz, F10 40Hz) for a budget bookshelf speaker. Distortion at 86dB and 96dB measures reasonably well at face value, and compression issues at extreme output are generally in line with what’s expected for a speaker at this price point. The overall tonal character can be substantially improved with basic EQ - the reviewer found a boost around 400Hz plus a cut around 4kHz brought it to an acceptable baseline. Measured bass extension of 59Hz (-3dB), with a measured sensitivity of 85.4dB.

Cons: An unusually erratic, up-and-down frequency response (a scooped midrange followed by an upper-mid bump, a dip, another small bump, then a strong 3-4dB peak around 4-7kHz) makes the speaker’s overall character genuinely hard to characterize - the reviewer compared the experience to a similarly disliked model, the Triangle Borea BR03, which has a comparably inconsistent response. The 4-7kHz peak gives a sharp, sibilant edge to S and T sounds in vocals. A strong diffraction dip around 4kHz followed by a peak can’t be fully corrected with EQ; the reviewer recommends sidewall absorption panels instead, since off-axis energy in the 2-7kHz range actually exceeds the direct sound reaching the listener. Multitone distortion becomes more noticeable and grainy at higher volumes, concentrated in the upper-midrange where hearing is most sensitive. A peaking distortion issue right at the crossover region suggests a possible combination of tweeter distortion and midwoofer/crossover-component strain. The enclosure sounds notably hollow when tapped, and a flashlight inspection suggested a lack of internal damping material, along with likely insufficient bracing. Vertical listening position is fairly tightly constrained around the tweeter axis. Still requires a subwoofer for real kick-drum impact and bass authority.

Full Fosi Audio SP601 review and specifications →

App	No
Bass Extension (-10dB)	40Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	59Hz (measured, Erin's Audio Corner)
Bluetooth	No
DSP	No
Dimensions	14.5"H x 9.1"W x 14"D (368.3 x 231.1 x 355.6 mm)
Drivers	6.5" woofer, 1.5" Silk Dome Tweeters
EQ	No
Impedance	4 ohms nominal, 4.1 ohms minimum (measured, Erin's Audio Corner)
Power Handling	80w RMS Per Speaker
Sensitivity	85.4dB (measured, Erin's Audio Corner)
Weight	11.5 lbs (5.2 kg)
Woofer Cabinet	ported, rear

Check current price at Amazon ($399.99) →Check current price at Fosiaudio →Search eBay for Fosi Audio SP601 →

Links
- Official Fosi Audio SP601 Website
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons

Ranked #115 of 130 in Large Size Bookshelf Speakers - Tannoy Revolution XT 6: $1100 per pair eBay

Pros: Horizontal directivity is very good outside of a narrow glitch around 2.5kHz, meaning the coaxial design’s off-axis sound closely tracks on-axis within a +/-50 degree toe-in window. Vertical response is notably better than a typical non-coaxial 2-way thanks to the concentric driver, and the downward-firing, base-integrated port is a distinctive, functional piece of industrial design. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 86.5dB.

Cons: CEA2034 spinorama shows significant on-axis dips and rising amplitude above 3kHz, and distortion measurements are the headline problem - 4-5% distortion at 96dB SPL in the most sensitive part of the audible band, far higher than the Revel M106 comparison unit at the same level. Careful multi-notch EQ improved things but never fully resolved it. The reviewer’s conclusion: “I can’t recommend the Tannoy XT 6” - the coaxial design’s distortion should have been addressed by the designer, not patched after the fact with EQ.

Full Tannoy Revolution XT 6 review and specifications →

Bass Extension (-10dB)	60Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Dimensions	15.8H x 8.7W x 11.9D in
Drivers	6" dual-concentric multifiber-cone woofer with coaxial 1" PEI dome tweeter
Impedance	8 ohms nominal
Power Handling	25-120W recommended, 240W peak
Sensitivity	86.5dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	1.52
Spinorama Preference Score with Perfect Sub	4.04
Weight	16.5 lbs (7.5 kg) each
Woofer Cabinet	ported, bottom-firing

Search eBay for Tannoy Revolution XT 6 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Tannoy Revolution XT 6 vs Cerwin Vega LA165
- Tannoy Revolution XT 6 vs ELAC Debut 3.0 DB63

Ranked #117 of 130 in Large Size Bookshelf Speakers - Harbeth Monitor 30: $3200 per pair eBay

Pros: Sensitivity of 85dB and a 6-ohm nominal impedance (150W handling) make it reasonably easy to drive despite the impedance dropping to about 4.8 ohms at points. Wide bandwidth 2-way design with a 7.9” bass/midrange driver and 1” soft dome tweeter. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 87dB.

Cons: CEA2034 spinorama shows a significant on-axis dip starting around 3kHz at the crossover point, which the reviewer called “the classic engineering work of calling a defect a feature” rather than the intentional character it’s often described as. Predicted in-room response is uneven with an exaggerated tilt toward high frequencies. Step response shows the tweeter and woofer out of phase with each other. At $3,200 per pair, the reviewer concluded the price doesn’t match the measured performance.

Full Harbeth Monitor 30 review and specifications →

Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
Dimensions	18.1"H x 10.9"W x 10.8"D (460 x 277 x 275 mm)
Drivers	7.9" bass/midrange driver, 1" soft dome tweeter
Frequency Response	50Hz - 20kHz (+/-3dB) (Manufacturer specified)
Impedance	6 ohms nominal
Sensitivity	87dB (2.83V/1m, measured, Audio Science Review)
Weight	25.6 lbs (11.6 kg) each
Woofer Cabinet	ported, rear

Search eBay for Harbeth Monitor 30 →

Links
- Official Harbeth Monitor 30 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #118 of 130 in Large Size Bookshelf Speakers - BIC America DV62si: $170.21 per pair Amazon eBay

Pros: A larger-than-typical 6.5” woofer for the price gives it real dynamic headroom - the reviewer called the ability to play loud with strong bass a genuine strength, uncommon among budget speakers with smaller drivers. Impedance is comfortably high for the amplifier to drive. Extremely popular with buyers (429 Amazon ratings averaging 4.5 stars at the time of review). Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 85dB.

Cons: CEA2034 spinorama shows uneven, elevated high-frequency response and what the reviewer called “the worst horizontal directivity plot we have seen” - direct and reflected sound diverge badly. Distortion is elevated across the board at 96dB SPL. The reviewer’s take: the elevated highs create an initial “high-resolution” impression that wins over casual listeners and drives the strong online ratings, but extended listening reveals harshness and grittiness; “I can’t recommend the BIC DV62si even though I understand why the popular vote is so strongly in its favor.”

Full BIC America DV62si review and specifications →

Bass Extension (-10dB)	58Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Dimensions	14.25H x 8.875W x 9.125D in
Drivers	6.5" poly/graphite-blend woofer, 0.75" ferrofluid-cooled dome tweeter
Frequency Response	43Hz - 21kHz -3dB (Manufacturer specified)
Impedance	8 ohms
Power Handling	10-175W
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	1.74
Spinorama Preference Score with Perfect Sub	4.65
Weight	15.5 lbs (7.03 kg) pair
Woofer Cabinet	ported, Venturi vent

Check current price at Amazon ($170.21) →Search eBay for BIC America DV62si →

Links
- Official BIC America DV62si Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- BIC America DV62si vs Harbeth Monitor 30
- BIC America DV62si vs ELAC Debut 3.0 DB63

Ranked #119 of 130 in Large Size Bookshelf Speakers - ATC SCM19: $3750 per pair Tmraudio eBay

Pros: Harmonic distortion at 96dB SPL/1m stays generally low across the range aside from the spike tied to the 700-800Hz resonance. Sealed (unported) cabinet avoids port noise and resonance, and the extremely dense, heavy-duty enclosure (17.8kg/39lb each) reflects ATC’s pro-audio build standards. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 85dB.

Cons: Some stored energy resonance around 500-700hz, 4dB bump around 700hz. Not recommended for the price. CEA2034 spinorama and predicted in-room response both show a very uneven overall balance - a broad accentuation from midrange to treble paired with too little bass - along with directivity error. At 96dB SPL/1m, harmonic distortion tied to the 500-700Hz resonance rises to a level the reviewer says “should not be there.”

Full ATC SCM19 review and specifications →

Bass Extension (-10dB)	34Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	17.2"H x 10.4"W x 11.8"D (436.9 x 264.2 x 299.7 mm)
Drivers	5.9" Super Linear Magnet cone woofer, 1" soft dome tweeter
Impedance	6 ohms
Sensitivity	85dB (measured, Audio Science Review)
Spinorama Preference Score	3.79
Spinorama Preference Score with Perfect Sub	6.21
Weight	39.2 lbs (17.8 kg) each
Woofer Cabinet	sealed

Check current price at Tmraudio →Search eBay for ATC SCM19 →

Links
- Official ATC SCM19 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review ATC SCM19 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #120 of 130 in Large Size Bookshelf Speakers - Diapason Emera: $1050 per pair Discontinued eBay

Pros: A direct-driven woofer with no crossover component in the bass path is a distinctive design choice shared with Totem Acoustics speakers, and fit and finish on the handcrafted Italian cabinet is very good. Distortion is reasonable at 86dB SPL. Measured bass extension of 90Hz (-3dB), with a measured sensitivity of 85dB.

Cons: CEA2034 spinorama shows an aggressively engineered response with attenuated bass and peaks/dips scattered through the rest of the spectrum, and directivity falls apart around the 4.8kHz crossover point. Distortion gets notably worse at 96dB SPL. The reviewer’s first impression out of the box was “disappointing… bright, with no bass and dull,” and while EQ made a dramatic improvement, the conclusion was “I can’t recommend the Diapason Emera speaker.” A 2002-era design no longer listed among Diapason’s current models. Discontinued.

Full Diapason Emera review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review)
Bass Extension (-3dB)	90Hz (measured, Audio Science Review)
Dimensions	not published by manufacturer
Discontinued	Yes
Drivers	170mm direct-driven (crossoverless) mid/woofer, 20mm Kapton isodynamic tweeter
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Weight	not published by manufacturer
Woofer Cabinet	sealed

Search eBay for Diapason Emera →

Links
- Official Diapason Emera Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Diapason Emera vs Chesky LC1
- Diapason Emera vs ELAC Debut 3.0 DB63

Ranked #122 of 130 in Large Size Bookshelf Speakers - HSU Research CCB-8: $699 per pair HSU Research eBay

Pros: Legitimately good midrange and mid-bass punch below about 1kHz, with in-room bass extension to about 60-70Hz that’s impressive for an 8” coaxial driver running this high a sensitivity (~90dB measured). Wide horizontal dispersion (~55 degrees) that holds up reasonably well off-axis. Measured bass extension of 65Hz (-3dB), with a measured sensitivity of 90.4dB.

Cons: Badly unbalanced top end that the reviewer called ‘just a terrible speaker’ outright - a roughly 7dB peak-dip swing in the upper mid/treble causes real listening fatigue regardless of listening angle (tried on-axis, 15 degrees off, and 30 degrees off, all bad). Resonances around 600Hz and 1.2kHz plus erratic high-frequency behavior hurt imaging noticeably. Would need 9 bands of EQ to get close to flat, and even then two dips near 2kHz and 8kHz are baked into the crossover and can’t be fixed with EQ at all - the reviewer’s verdict was simply to skip it.

Full HSU Research CCB-8 review and specifications →

Bass Extension (-10dB)	52Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	65Hz (measured, Erin's Audio Corner)
Dimensions	15" x 10.5" x 12" (381 x 267 x 305 mm)
Drivers	8" coaxial driver, constant-directivity horn tweeter
Frequency Response	50Hz - 20kHz (+-2dB at 15 degrees off-axis, Manufacturer specified)
Impedance	8 ohms nominal
Recommended Power	10-400W RMS per channel
Sensitivity	90.4dB (2.83V/1m, measured by Erin's Audio Corner)
Spinorama Preference Score	1.00
Spinorama Preference Score with Perfect Sub	3.41
Weight	22 lbs (10 kg) each
Woofer Cabinet	Vented

Check current price at HSU Research ($699) →Search eBay for HSU Research CCB-8 →

Links
- Official HSU Research CCB-8 Product Page
Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: This Speaker Was A Letdown More from Erin’s Audio Corner →
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #123 of 130 in Large Size Bookshelf Speakers - JBL 4319: $4000 per pair Discontinued eBay

Pros: High sensitivity around 90dB and controlled bass distortion mean the large 12” woofer plays loud with copious bass and modest amplifier power needs. Impedance dips are well controlled, so it isn’t a hard speaker to drive despite its size. User-adjustable midrange and treble level controls are built into the back panel. Measured bass extension of 80Hz (-3dB), with a measured sensitivity of 89.5dB.

Cons: CEA2034 spinorama shows a pronounced 800Hz dip and a comb-filtering pattern in the woofer response consistent with a delayed reflected source, plus poor and uneven vertical directivity. The reviewer described the sound as “boxy and closed in with some brightness” and could not recommend it “unless you like looking at it more than listening to it.” At 23.5” tall, it’s closer to a small tower than a typical bookshelf speaker. Discontinued. Discontinued.

Full JBL 4319 review and specifications →

Bass Extension (-10dB)	64Hz (measured, Audio Science Review)
Bass Extension (-3dB)	80Hz (measured, Audio Science Review)
Dimensions	23.5H x 14.25W x 12D in (with grille)
Discontinued	Yes
Drivers	12" Differential Drive dual-voice-coil woofer, 5" inverted-dome midrange, 1" compression tweeter (3-way)
Sensitivity	89.5dB (2.83V/1m, measured, Audio Science Review)
Weight	35.9 lbs (16.3 kg) each
Woofer Cabinet	ported

Search eBay for JBL 4319 →

Links
- Owner’s Manual
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #126 of 130 in Large Size Bookshelf Speakers - Tannoy System 600: $400 per pair Discontinued eBay

Pros: Impedance is well controlled, and the concentric dual-driver layout gives it consistent horizontal and vertical response relative to typical non-coaxial 2-ways of its era. Measured bass extension of 73Hz (-3dB), with a measured sensitivity of 84dB.

Cons: CEA2034 spinorama shows a large suck-out right at the crossover frequency where the two drivers fail to overlap properly, plus general peaking beforehand - the reviewer noted “no measurement seems to have been used to optimize this design.” Predicted in-room response is correspondingly poor. Amir ran out of time to perform a dedicated subjective listening test on this unit, but concluded from the data alone that it is “highly colored and really not something you want to put in your system.” Long discontinued; used-market only. Discontinued.

Full Tannoy System 600 review and specifications →

Bass Extension (-10dB)	approx. 48Hz - low confidence, response never reaches a flat reference level (measured, Audio Science Review)
Bass Extension (-3dB)	approx. 73Hz - low confidence, response never reaches a flat reference level (measured, Audio Science Review)
Dimensions	8.7"H x 14.2"W x 11.4"D (220 x 360 x 290 mm)
Discontinued	Yes
Drivers	6.5" Tannoy Dual Concentric driver (type 1678)
Frequency Response	52Hz - 20kHz +/-3dB (Manufacturer specified)
Impedance	8 ohms nominal
Power Handling	50-150W recommended
Sensitivity	approx. 84dB (2.83V/1m, measured, Audio Science Review - low confidence, no flat reference plateau)
Spinorama Preference Score	0.52
Spinorama Preference Score with Perfect Sub	3.52
Weight	20.9 lbs (9.5 kg) pair (cabinet)
Woofer Cabinet	ported, flared tubes

Search eBay for Tannoy System 600 →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #127 of 130 in Large Size Bookshelf Speakers - Ascend CBM-170 SE: $384 per pair superseded by CBM-170SE2, Discontinued eBay

Pros: US-manufactured 2-way with a custom SEAS silk dome tweeter and low harmonic distortion. Solid cabinet construction for the price class. Measured bass extension of 80Hz (-3dB).

Cons: On-axis response starts peaking above 1kHz and keeps rising, which Amir predicted would create a bright, potentially fatiguing tonal balance - a character he says “can become grating” over time. The small tweeter paired with a larger woofer lacking a waveguide causes significant off-axis coloration, contradicting the manufacturer’s accuracy claims. Impedance dips below 4 ohms in the bass, and cabinet flex was noted, comparable to cheaper competitors. Amir suggests “looking elsewhere for a better design.”. Discontinued.

Full Ascend CBM-170 SE review and specifications →

Bass Extension (-10dB)	approx. 50Hz (measured, Audio Science Review)
Bass Extension (-3dB)	approx. 80Hz (measured, Audio Science Review)
Dimensions	12H x 9W x 10D in
Discontinued	Yes
Drivers	6.5" proprietary composite polygel cone woofer, 27mm custom SEAS soft dome tweeter
Impedance	8 ohms
Sensitivity	91dB (2.83V/1m, manufacturer specified, in-room)
Spinorama Preference Score	3.38
Spinorama Preference Score with Perfect Sub	6.17
Weight	14 lbs (6.35 kg) each

Search eBay for Ascend CBM-170 SE →

Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Ascend CBM-170 SE vs Tannoy System 600
- Ascend CBM-170 SE vs ELAC Debut 3.0 DB63

Ranked #129 of 130 in Large Size Bookshelf Speakers - Dayton Audio B652-AIR: $77.99 per pair Discontinued eBay

Pros: AMT (Air Motion Transformer) tweeter offers a novel driver technology at a very low price point, and the full-range woofer keeps the crossover simple. Measured bass extension of 98.1Hz (-3dB).

Cons: Amir says this speaker “does everything wrong that you want to avoid in modern speaker design” - the woofer runs full-bandwidth without a proper crossover filter, causing a 340Hz suckout from woofer/tweeter cancellation and multiple additional peaks and dips. The AMT tweeter lacks adequate damping (only a capacitor and resistor), and the thin cabinet resonates audibly. Listening tests revealed “piercing and distorted highs” and “distorted lisping” on female vocals. Amir specifically criticized other reviewers for calling these speakers “clear and clean” with “five star performance,” calling such assessments “embarrassing,” and recommended the Pioneer SP-BS22-LR instead. Discontinued; replaced by the Dayton Audio Classic B65. Discontinued.

Full Dayton Audio B652-AIR review and specifications →

Bass Extension (-10dB)	63.1Hz (measured, Audio Science Review)
Bass Extension (-3dB)	98.1Hz (measured, Audio Science Review)
Dimensions	11.8H x 7.06W x 6.4D in
Discontinued	Yes
Drivers	6.5" polypropylene woofer (full-range, no low-pass filter), 1"x1" mini AMT tweeter
Impedance	6 ohms
Power Handling	40W RMS, 75W max
Sensitivity	87dB (1W/1m, manufacturer specified)
Weight	5.3 lbs (2.4 kg) each

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Links
- Official Dayton Audio B652-AIR Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons
- Dayton Audio B652-AIR vs Yamaha NS-6490
- Dayton Audio B652-AIR vs ELAC Debut 3.0 DB63

Ranked #130 of 130 in Large Size Bookshelf Speakers - Yamaha NS-6490: $129.95 per pair Discontinued eBay

Pros: Attractive industrial design with a large 8-inch woofer for the price. Simple direct-driven woofer with capacitor-only mid/tweeter crossovers keeps the design straightforward. Measured bass extension of 54.4Hz (-10dB), with a measured sensitivity of 89.6dB.

Cons: Amir found the woofer runs essentially full-range with only a capacitor separating the mid and tweeter, letting all three drivers bleed into each other’s range and causing “rising amplitude” across the response. Extensive narrow peaking indicates numerous cabinet resonances - Amir noted, “we have more of them than I have ever seen.” Distortion is high across the measurement range, and directivity is highly variable, particularly vertically. With a 1.6 preference score, Amir concluded, “I just can’t recommend it,” noting that extensive EQ would not fix the underlying resonance issues. Discontinued and no longer sold new. Discontinued.

Full Yamaha NS-6490 review and specifications →

Bass Extension (-10dB)	54.4Hz (measured, Audio Science Review)
Dimensions	16.2H x 10.5W x 13.2D in
Discontinued	Yes
Drivers	8" woofer, 4" midrange cone, 7/8" balanced dome tweeter (3-way, acoustic suspension)
Frequency Response	45Hz - 23kHz (Manufacturer specified)
Impedance	8 ohms
Power Handling	70W nominal, 140W max
Sensitivity	89.6dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	1.36
Spinorama Preference Score with Perfect Sub	4.23
Weight	13.2 lbs (6 kg) each

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Links
- Official Yamaha NS-6490 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Large Size Floorstanding Speakers

Ranked #5 of 71 in Large Size Floorstanding Speakers - Radiant Acoustics Clarity 66: $7,998 per pair Radiant Acoustics eBay

Pros: ASR’s revised Spinorama measurement shows bass reaching 32.2Hz at -3dB and 27.8Hz at -6dB, giving substantial low-end weight without a subwoofer. The response spans 2.3dB from 300Hz to 5kHz, with preference scores of 5.10 standalone and 6.12 with an ideal subwoofer. The review’s exceptionally low bass distortion at ordinary levels complements that extension, while dual 6.5-inch Purifi woofers provide a strong foundation for full-range listening. Measured bass extension of 32.2Hz (-3dB), with a measured sensitivity of 85.9dB.

Cons: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance. Treble resonances and response irregularities keep it from reference-level neutrality. Spinorama’s modeled EQ improves the scores to 6.09 standalone and 6.99 with an ideal subwoofer, but those are corrected results, not stock performance. Measured sensitivity is 85.9dB at 2.83V/1m with a nominal 4-ohm load; use an amplifier comfortable driving 4 ohms. Distortion rises at very high playback levels.

Full Radiant Acoustics Clarity 66 review and specifications →

Bass Extension (-10dB)	24.4Hz (measured, Audio Science Review)
Bass Extension (-3dB)	32.2Hz (measured, Audio Science Review)
Crossover Frequency	2.4kHz
Dimensions	40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm)
Drivers	Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers
Impedance	4 ohms nominal
Sensitivity	85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified)
Spinorama Preference Score	5.10
Spinorama Preference Score with Perfect Sub	6.12
Weight	101.4 lbs (46 kg) each
Woofer Cabinet	ported, large rear port

Check current price at Radiant Acoustics ($7,998) →Search eBay for Radiant Acoustics Clarity 66 →

Links
- Official Radiant Acoustics Clarity 66 Product Page
Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
- Radiant Acoustics Clarity 66 vs Ascend Acoustics ELX Ribbon Tower

Ranked #8 of 71 in Large Size Floorstanding Speakers - Revel F328Be: $9679.95 per pair Crutchfield eBay

Pros: CEA2034 spinorama shows a quite flat on-axis response with superb directivity and efficiency above 90dB. Predicted in-room response is extremely accurate, with a smooth ~5dB downward slope from bass to treble that suits typical rooms without correction. Early reflections sum very nicely with the direct sound. Horizontal beamwidth of about ±70 degrees is wide and quite smooth. At 96dB SPL/1m distortion stays easily below the reviewer’s audibility threshold across nearly the whole range. Measured bass extension of 74Hz (-3dB), with a measured sensitivity of 91dB.

Cons: Vertical directivity is asymmetric - the reviewer recommends staying between -20 and +40 degrees relative to the tweeter axis, reflecting the driver layout of this three-way tower. Impedance dips to a minimum of 3 ohms with an additional resonance-driven phase swing, calling for an amplifier comfortable with a demanding load. Very expensive and very heavy (51 kg each).

Full Revel F328Be review and specifications →

Bass Extension (-10dB)	39Hz (measured, Audio Science Review)
Bass Extension (-3dB)	74Hz (measured, Audio Science Review)
Dimensions	50.9"H x 13.5"W x 17.6"D (1292.9 x 342.9 x 447 mm)
Drivers	Three 8" (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofer, 5-1/4" (130mm) Deep Ceramic Composite aluminum cone, with cast frame midrange, 1" (25mm) Beryllium dome, with acoustic lens waveguide tweeter
Impedance	8 ohms nominal (3 ohms minimum, measured by Audio Science Review)
Sensitivity	91dB (measured, Audio Science Review)
Spinorama Preference Score	5.79
Spinorama Preference Score with Perfect Sub	7.20
Weight	112.4 lbs (51 kg) each
Woofer Cabinet	ported, rear

Check current price at Crutchfield ($9679.95) →Search eBay for Revel F328Be →

Links
- Official Revel F328Be Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel F328Be More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #14 of 71 in Large Size Floorstanding Speakers - Focal Chora 816: $900 per pair used, Discontinued eBay

Pros: CEA2034 spinorama shows a generally even on-axis response with nice bass extension and high sensitivity. Predicted in-room response is very good aside from a peak around 8kHz. Horizontal beamwidth of about ±60 degrees is typical and fairly controlled. Distortion is very low at 86dB SPL/1m and still usable at 96dB SPL/1m. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 91dB.

Cons: Some messiness appears between 500Hz-2kHz on-axis, including a dip around 550Hz. Vertical directivity narrows a little, so listening height matters more than with a coincident design. Cumulative spectral decay (waterfall) shows a fair bit of resonances lingering across the midrange. Distortion rises substantially in the 1-2kHz region at 96dB SPL/1m. Minimum impedance dips to about 3.9 ohms. Discontinued.

Full Focal Chora 816 review and specifications →

Bass Extension (-10dB)	35Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	40.7"H x 11.8"W x 15.3"D (1033.8 x 299.7 x 388.6 mm)
Discontinued	Yes
Drivers	6.5" (16.5cm) Slatefiber woofer, 6.5" (16.5cm) Slatefiber midrange, 1" (25mm) TNF Al/Mg inverted dome tweeter
Impedance	8 ohms nominal (3.9 ohms minimum, measured, Audio Science Review)
Sensitivity	91dB (measured, Audio Science Review)
Spinorama Preference Score	3.42
Spinorama Preference Score with Perfect Sub	5.49
Weight	40.8 lbs (18.5 kg) each
Woofer Cabinet	ported, front

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Links
- Official Focal Chora 816 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Focal Chora 816 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #15 of 71 in Large Size Floorstanding Speakers - Revel F208: $2400 per pair used, Discontinued eBay

Pros: CEA2034 spinorama shows a fairly even on-axis response with sensitivity matching spec at ~87-88dB. Predicted in-room response is a smooth, textbook-quality downward slope that should translate well to most rooms without correction. Early reflections sum so cleanly with the direct sound that side-wall absorption isn’t recommended - it would work against the speaker’s naturally well-integrated off-axis behavior. Distortion stays below 0.5% from 100Hz up at 96dB/1m, with all distortion components falling below audible threshold above 200Hz. Very wide horizontal directivity of about ±75 degrees. Measured performance was judged very close to Revel’s own flagship Salon2, and Revel’s speakers (including this one) are developed using Harman’s double-blind listening test methodology. Preference score of 6.6 (7.7 with a subwoofer added). Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 88.2dB.

Cons: Some directivity error and tweeter-response ripple right at the 2.2kHz crossover point. A notable on-axis dip at about 4kHz, attributed to probable cabinet diffraction. Cumulative spectral decay (waterfall) shows an unexplained resonance around 4-5kHz that the reviewer couldn’t pin down a clear cause for. Vertical directivity shows narrowband interference nulls just above and below the tweeter axis (roughly 2-3kHz), typical of a non-coaxial tower with vertically separated drivers, so listening height matters more than it would with a coincident design. Minimum impedance dips to 3.4 ohms, calling for a robust, high-current amplifier. Distortion climbs substantially below about 80-100Hz (up to ~5% in the deep bass) when driven hard, an excursion-limited trade-off typical of towers at high output. Isolating the woofers alone shows their usable range ending around 500-700Hz at the crossover, with somewhat elevated (though still low in absolute terms) 2nd/3rd harmonic distortion in the 100-300Hz region. Discontinued.

Full Revel F208 review and specifications →

Bass Extension (-10dB)	24Hz (measured, Audio Science Review)
Bass Extension (-3dB)	47Hz (measured, Audio Science Review)
Dimensions	46.6"H x 13.5"W x 14.8"D (1183.6 x 342.9 x 375.9 mm)
Discontinued	Yes
Drivers	Dual 8" (20 cm) Aluminum Cone, Cast-frame Woofers, 5.25" (13.3 cm) Aluminum Cone, Cast-frame Midrange, 1" (2.5 cm) Aluminum Tweeter with Acoustic Lens Waveguide
Impedance	8 ohms nominal, 3.5 ohms minimum (measured, Audio Science Review)
Sensitivity	88.2dB (measured by Audio Science Review; 88.5dB manufacturer specified)
Spinorama Preference Score	5.65
Spinorama Preference Score with Perfect Sub	6.97
Weight	79.4 lbs (36 kg) each
Woofer Cabinet	ported, front

Search eBay for Revel F208 →

Links
- Official Revel F208 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel F208 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #16 of 71 in Large Size Floorstanding Speakers - Revel F228Be: $4500 per pair Crutchfield eBay

Pros: CEA2034 spinorama shows an essentially flat on-axis response with very nice directivity. Predicted in-room response is nearly perfect, with a smooth slope down from bass to treble. Horizontal beamwidth of about ±70 degrees is wide and holds up well until narrowing above 8kHz. Vertical directivity offers more degrees of listening-height freedom than a typical bookshelf design, a benefit of this tower’s driver layout. Distortion is extremely low across the full audio range at 86dB SPL/1m and stays comfortable even at 96dB SPL/1m. Near-field measurements of the individual drivers show nice, well-integrated crossover behavior with only low-level resonances. Measured bass extension of 61Hz (-3dB), with a measured sensitivity of 89.3dB.

Cons: Minimum impedance dips to 3.4 ohms with a secondary rise around 2kHz, calling for an amplifier comfortable with a demanding load. Very expensive and very heavy (51 kg each).

Full Revel F228Be review and specifications →

Bass Extension (-10dB)	25Hz (measured, Audio Science Review)
Bass Extension (-3dB)	61Hz (measured, Audio Science Review)
Dimensions	50.9"H x 13.5"W x 17.6"D (1292.9 x 342.9 x 447 mm)
Drivers	Dual 8" (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofers, 5-1/4" (130mm) Deep Ceramic Composite aluminum cone, with cast frame midrange, 1" (25mm) Beryllium dome, with acoustic lens waveguide tweeter
Impedance	8 ohms
Sensitivity	89.3dB (300Hz-3kHz @ 2.83V/1m, measured by Audio Science Review; 90dB manufacturer specified)
Spinorama Preference Score	5.20
Spinorama Preference Score with Perfect Sub	6.70
Weight	112.4 lbs (51 kg) each
Woofer Cabinet	ported, front

Check current price at Crutchfield ($4500) →Search eBay for Revel F228Be →

Links
- Official Revel F228Be Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel F228Be More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #18 of 71 in Large Size Floorstanding Speakers - TAD Evolution 2: $19,995 per pair House of Stereo eBay

Pros: Independently measured by ASR (not vendor-supplied data) with an excellent on-axis smoothness score of 0.182 and a nearly flat tonal balance (a slope of just -0.01dB per octave), from a beryllium tweeter on a cast-aluminum waveguide paired with dual MACC-diaphragm woofers. Alpha Audio’s review called it a “competition killer.”

Cons: Its directivity-index standard deviation of 3.70 and predicted in-room smoothness of 0.25 are both unremarkable, not matching the excellent on-axis smoothness, and it’s priced at $19,995/pair, sold only through a small dealer network, with one dealer showing it temporarily sold out.

Full TAD Evolution 2 review and specifications →

Country	Japan
Dimensions	12.6"W x 42.7"H x 15.9"D (320 x 1085 x 405 mm) (1113mm tall with spikes)
Drivers	1" beryllium dome tweeter (cast-aluminum waveguide), 2x 6.5" MACC-diaphragm woofers
Enclosure	2.5-way, bass-reflex, SILENT laminated cabinet
Impedance	6 ohms nominal, 4.5 ohms minimum
Sensitivity	87dB @ 2.83V/1m
Spinorama Preference Score	4.65
Spinorama Preference Score with Perfect Sub	6.06
Weight	70.5 lbs (32 kg) each

Check current price at House of Stereo ($19,995/pair) →Search eBay for TAD Evolution 2 →

Links
- TAD Evolution 2 Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- TAD Evolution 2 vs Magico A5
- TAD Evolution 2 vs Arendal Sound 1610 Tower 8

Ranked #22 of 71 in Large Size Floorstanding Speakers - Revel F206: $2000 per pair used, Discontinued eBay

Pros: CEA2034 spinorama shows a pretty even on-axis response. Predicted in-room response is excellent, with a smooth downward slope. Horizontal beamwidth of about ±65 degrees is wide, if a bit uneven. Distortion is very nice at 86dB SPL/1m, falling below the frequency range where human hearing is most sensitive, and stays excellent even at 96dB SPL/1m. Near-field measurements of the individual drivers show nice suppression of port and woofer resonances. Really amazing value for the performance. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 87dB.

Cons: Some directivity error and a small peak around 4.5kHz show up alongside the directivity error around 3kHz. Vertical directivity means listening position needs to stay within the tweeter axis, though the reviewer notes there is some leeway. Minimum impedance dips to 3.3 ohms, calling for an amplifier comfortable with a demanding load. Discontinued.

Full Revel F206 review and specifications →

Bass Extension (-10dB)	34Hz (measured, Audio Science Review)
Bass Extension (-3dB)	60Hz (measured, Audio Science Review)
Dimensions	40.3"H x 8.4"W x 12.2"D (1023.6 x 213.4 x 309.9 mm)
Discontinued	Yes
Drivers	Dual 6.5" (16.5 cm) Aluminum Cone, Cast-frame Woofers, 5.25" (13.3 cm) Aluminum Cone, Cast-frame Midrange, 1" (2.5 cm) Aluminum Tweeter with Acoustic Lens Waveguide
Impedance	4 ohms nominal (3.3 ohms minimum, measured by Audio Science Review)
Sensitivity	87dB (measured, Audio Science Review)
Spinorama Preference Score	4.72
Spinorama Preference Score with Perfect Sub	6.73
Weight	57.3 lbs (26 kg) each
Woofer Cabinet	ported, front

Search eBay for Revel F206 →

Links
- Official Revel F206 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Revel F206 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #23 of 71 in Large Size Floorstanding Speakers - Revel Concerta2 F35: $900 per pair Crutchfield eBay

Pros: Two-and-a-half-way, four-driver design: a 1” aluminum dome tweeter on a waveguide, a 5.25” mid-range, and dual 5.25” mid-bass drivers in a rear-ported cabinet. Measured sensitivity of 89.4dB closely matches the 90dB spec, and distortion looks good at both 86dB and 96dB, holding up well even with a high-pass filter applied. At its sale price (around $900/pair, down from full retail), the reviewer calls it a “no-brainer,” undercutting comparable budget floorstanders like the ELAC DF63. Frequency response and directivity mismatches are largely EQ-able, since most of what shows up in measurements traces to physical tweeter/mid-range separation rather than a fundamental flaw. Compression is fairly well controlled for the price - about 1dB of loss around 100Hz under long-term compression, described as “par for the course” at this cost. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 89.4dB.

Cons: F3 of 61Hz and F10 of 39Hz mean a subwoofer is needed for real bass extension. A dip in the lower midrange/2-3kHz region reduces attack and detail, and a peak around 5kHz adds some edge and sibilance in the lower treble. A peak in off-axis energy around 3kHz reflects off sidewalls at roughly 60-70° off-axis and arrives louder than the direct sound - this specific issue can’t be fixed with EQ (boosting the direct sound would boost the stronger reflection too) and would need acoustic absorption to properly address, though the reviewer considers it a minor, optional fix at this price. A couple of minor resonances appear in the impedance plot, including one around 300Hz that may partly explain a subtle sense of vocal warmth noticed in listening, though it’s more likely room-related. Minimum impedance around 3.8 ohms. Short-term compression testing shows some increased distortion in the tweeter and higher-frequency compression at loud output.

Full Revel Concerta2 F35 review and specifications →

Bass Extension (-10dB)	50Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	70Hz (measured, Erin's Audio Corner)
Dimensions	40.3"H x 8.4"W x 12.2"D (1023.6 x 213.4 x 309.9 mm)
Drivers	3x 5.25" deep anodized aluminum cone woofers, 1" Aluminum Tweeter
Impedance	6 ohms nominal (3.8 ohms minimum, measured by Erin's Audio Corner)
Sensitivity	89.4dB (measured, Erin's Audio Corner; 90dB manufacturer specified)
Spinorama Preference Score	4.44
Spinorama Preference Score with Perfect Sub	6.38
Weight	41 lbs (18.6 kg) each
Woofer Cabinet	ported, rear

Check current price at Crutchfield →Search eBay for Revel Concerta2 F35 →

Ranked #26 of 71 in Large Size Floorstanding Speakers - KEF R11 Meta: $3,499.99 per pair Amazon eBay

Pros: CEA2034 spinorama shows a generally flat on-axis response with good directivity and very deep bass extension (F10 of 30Hz). Predicted in-room response is very smooth aside from the small 1-1.5kHz dip. The coaxial Uni-Q driver gives excellent, symmetric vertical directivity, unusual for a tower speaker. Distortion is incredibly low even down to 30Hz at 86dB SPL/1m, and stays low even at 96dB and 102dB SPL/1m - the reviewer found essentially no audible tonality change across that whole output range. Measured bass extension of 64Hz (-3dB).

Cons: A dip around 1-1.2kHz on-axis is attributed to a diffraction effect, and shows up as a smaller dip in the predicted in-room response. Horizontal beamwidth of about ±40 degrees is on the narrower side, though the transition from wide to constant directivity is smooth. Minimum impedance dips to 3.2 ohms around 580Hz, calling for an amplifier comfortable with a demanding load. 4-ohm nominal impedance overall.

Full KEF R11 Meta review and specifications →

Bass Extension (-10dB)	31Hz (measured, Audio Science Review)
Bass Extension (-3dB)	64Hz (measured, Audio Science Review)
Dimensions	51"H x 12.2"W x 15.1"D (1295.4 x 309.9 x 383.5 mm)
Drivers	4 x 165 mm (6.5 in.) hybrid aluminium cone woofers, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) vented aluminium dome with MAT tweeter
Impedance	4 ohms
Sensitivity	89.5dB
Spinorama Preference Score	5.05
Spinorama Preference Score with Perfect Sub	6.46
Weight	80.5 lbs (36.5 kg) each
Woofer Cabinet	ported, rear

Check current price at Amazon ($3,499.99) →Search eBay for KEF R11 Meta →

Links
- Official KEF R11 Meta Website
Reviews, Comparisons and Sound Samples
- Audio Science Review KEF R11 Meta More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #28 of 71 in Large Size Floorstanding Speakers - JBL HDI-3600: $3800 per pair Audioadvice eBay

Pros: CEA2034 spinorama shows a fairly even on-axis response and flat overall frequency response, with high 90dB sensitivity and very low distortion through the midrange. Triple 6.5” Advanced Aluminum Matrix woofers and a 1” compression driver in JBL’s HDI waveguide. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 89.5dB.

Cons: A wide shelving-down above 2kHz affects the in-room response, and vertical dispersion is a bigger issue than horizontal - the reviewer noted the dip is wider here than on the smaller HDI-1600, making it more audible. Narrow vertical sweet spot means careful listener-height positioning matters more than usual.

Full JBL HDI-3600 review and specifications →

Bass Extension (-10dB)	62Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz - the on-axis curve also shows an unusual step/dip around 40-55Hz that may be a near-field-scan artifact for this tower (measured, Audio Science Review)
Dimensions	40.5"H x 10.2"W x 13.5"D (1029 x 260 x 343 mm)
Drivers	2410H-2 1" compression driver, 3x 6.5" Advanced Aluminum Matrix woofers
Frequency Response	38Hz - 30kHz (+/-3dB) (Manufacturer specified)
Impedance	4 ohms nominal
Sensitivity	89.5dB (2.83V/1m, measured, Audio Science Review)
Weight	61.7 lbs (28 kg) each
Woofer Cabinet	ported, dual rear-firing

Check current price at Audioadvice →Search eBay for JBL HDI-3600 →

Links
- Official JBL HDI-3600 Product Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #55 of 71 in Large Size Floorstanding Speakers - Polk T50: $249.00 per pair Amazon eBay

Pros: Pretty deep bass for the price. Distortion at 86dB SPL/1m is reasonably controlled outside a narrow spike around 250Hz. The reviewer notes performance is “not too bad for a budget speaker” once the two main tonal issues are addressed with EQ. Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 86.3dB.

Cons: 5dB peak at 1khz, 4dB bright top end from 11khz on up. Just okay vertical off axis. Impedance and phase show several resonances between 200Hz-1kHz, with a minimum impedance of 4.2 ohms. Distortion rises substantially at 96dB SPL/1m across the midrange, with repeated peaks between 100Hz-2kHz.

Full Polk T50 review and specifications →

Bass Extension (-10dB)	38Hz (measured, Audio Science Review)
Bass Extension (-3dB)	47Hz (measured, Audio Science Review)
Dimensions	40.4"H x 9.3"W x 12.5"D (1026.2 x 235.0 x 317.5 mm)
Drivers	2x 6.5" bi-laminate paper cone woofers, 1x 1" Terylene dome tweeter + 2x 8" passive bass radiators
Impedance	4 ohms nominal (4.2 ohms minimum, measured by Audio Science Review)
Sensitivity	86.3dB (2.83V/1m, measured by Audio Science Review)
Spinorama Preference Score	3.27
Spinorama Preference Score with Perfect Sub	5.28
Weight	75.4 lbs (34.2 kg)
Woofer Cabinet	passive radiator

Check current price at Amazon ($249.00) →Search eBay for Polk T50 →

Links
- Official Polk T50 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Polk T50 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #57 of 71 in Large Size Floorstanding Speakers - Aperion Audio Novus N5T: $1,048.50 per pair Aperion Audio eBay

Pros: A compact direct-sale tower with dual 5.25-inch aramid-fiber woofers, a silk-dome tweeter, free shipping and a 30-day home trial. ASR found excellent sound-power smoothness of 0.122, controlled directivity, and deep 36Hz estimated in-room extension. Measured sensitivity of 86dB.

Cons: The -0.31dB-per-octave response tilt makes it moderately warm/dark, while on-axis smoothness of 0.267 is merely average. The measured 86dB sensitivity is lower than the maker’s 89dB specification.

Full Aperion Audio Novus N5T review and specifications →

Country	United States (design)
Dimensions	39H x 7.5W x 10.6D in
Drivers	1" silk-dome tweeter, 2x 5.25" aramid-fiber woofers
Enclosure	2.5-way, rear-ported
Impedance	4 ohms nominal
Sensitivity	86dB measured
Spinorama Preference Score	4.02
Spinorama Preference Score with Perfect Sub	5.75
Weight	37 lbs (16.8 kg) each

Check current price at Aperion Audio ($524.25 each) →Search eBay for Aperion Audio Novus N5T →

Links
- Aperion Novus N5T Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons
- Aperion Audio Novus N5T vs Vandersteen Treo CT

Ranked #60 of 71 in Large Size Floorstanding Speakers - Infinity Reference 253: $400 per pair used, Discontinued eBay

Pros: Horizontal beamwidth of about ±60 degrees is fairly smooth and well controlled. Really amazing value for the performance. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 86.9dB.

Cons: CEA2034 spinorama and predicted in-room response both show elevated treble above 4kHz (“too hot”), a dip around 2kHz, and bass shelved down relative to the midrange. Vertical directivity requires staying at or below the tweeter axis for accurate tonal balance. Distortion at 96dB SPL/1m is broadly elevated above the reviewer’s audibility threshold across much of the midrange. Minimum impedance dips to 4.2 ohms. Discontinued.

Full Infinity Reference 253 review and specifications →

Bass Extension (-10dB)	38Hz (measured, Audio Science Review)
Bass Extension (-3dB)	78Hz (measured, Audio Science Review)
Dimensions	40.3"H x 6.8"W x 12.4"D (1023.6 x 172.7 x 315 mm)
Discontinued	Yes
Drivers	Dual 5.25" (130mm) CMMD™ woofers, 5.25" (130mm) flat-piston CMMD™ midrange, 1" (25mm) CMMD™ tweeter
Impedance	6 ohms
Sensitivity	86.9dB (measured by Audio Science Review; 88dB manufacturer specified)
Weight	39.2 lbs (17.8 kg) each
Woofer Cabinet	ported, rear

Search eBay for Infinity Reference 253 →

Links
- Official Infinity Reference 253 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review Infinity Reference 253 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #68 of 71 in Large Size Floorstanding Speakers - JBL Studio 590: $2000 per pair Discontinued eBay

Pros: Pretty deep bass. CEA2034 spinorama is flat on-axis at a high level, with high sensitivity around 89-90dB. Predicted in-room response is good aside from a dip between 800Hz-1.5kHz. Distortion at 86dB SPL/1m is good outside of the 8.5kHz resonance. Measured bass extension of 48Hz (-3dB), with a measured sensitivity of 90.3dB.

Cons: 3dB peak at 1.7khz, about a 4dB peak from 8k to 13k, going to be bright up top. Just okay vertical off axis. Really bad resonance at 8.5khz, which shows up as a sharp distortion spike at both 86dB and 96dB SPL/1m. Cumulative spectral decay (waterfall) reveals many fine resonances across the midrange and treble. At 96dB SPL/1m the midrange and treble get notably messier, with broad distortion elevation from 2-8kHz. Discontinued.

Full JBL Studio 590 review and specifications →

Bass Extension (-10dB)	32Hz (measured, Audio Science Review)
Bass Extension (-3dB)	48Hz (measured, Audio Science Review)
Dimensions	49.7"H x 12.7"W x 16.3"D (1263.0 x 322.0 x 413.0 mm)
Discontinued	Yes
Drivers	2x 8" (200mm) PolyPlas cone woofers, 1x 1" (25mm) Teonex dome tweeter on Bi-Radial horn (2.5-way)
Impedance	6 ohms nominal (5 ohms measured minimum, Audio Science Review)
Sensitivity	90.3dB (2.83V/1m, measured by Audio Science Review)
Spinorama Preference Score	3.58
Spinorama Preference Score with Perfect Sub	5.31
Weight	107.8 lbs (48.9 kg)
Woofer Cabinet	ported, rear

Search eBay for JBL Studio 590 →

Links
- Official JBL Studio 590 Website
Reviews, Comparisons and Sound Samples
- Audio Science Review JBL Studio 590 More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
Head-to-Head Comparisons

Ranked #69 of 71 in Large Size Floorstanding Speakers - Triangle Esprit Antal Ez: $1799 per pair Discontinued eBay

Pros: Predicted in-room response sums rather nicely aside from the resonance and bass issues. Horizontal beamwidth of about ±50 degrees is reasonably controlled. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 90.7dB.

Cons: Resonance around 260Hz and a number of other resonances show up on-axis, along with a dip in bass response. Two distinct distortion sources - one around 250-300Hz, another around 3-4kHz - already cross the reviewer’s audibility threshold even at moderate output, and get much worse at 96dB SPL/1m, where distortion broadly exceeds 50% relative level across large parts of the spectrum. Directivity is not great overall. The reviewer does not recommend it. Discontinued.

Full Triangle Esprit Antal Ez review and specifications →

Bass Extension (-10dB)	62Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower
Bass Extension (-3dB)	85Hz (measured, Audio Science Review) - low confidence - on-axis curve shows an unusual notch/dip around 250-300Hz for this floorstanding tower
Dimensions	43.9"H x 11.8"W x 15.7"D (1115.0 x 300.0 x 400.0 mm)
Discontinued	Yes
Drivers	2x 6.5" (160mm) fiberglass cone woofers, 1x 6.5" (160mm) natural cellulose midrange, 1x 1" (25mm) titanium dome tweeter
Impedance	8 ohms nominal (2.7 ohms minimum, measured by Audio Science Review)
Sensitivity	90.7dB (2.83V/1m, measured by Audio Science Review)
Spinorama Preference Score	1.90
Spinorama Preference Score with Perfect Sub	4.51
Weight	98.5 lbs (44.7 kg)
Woofer Cabinet	ported, front

Search eBay for Triangle Esprit Antal Ez →

In-Wall & In-Ceiling Speakers

Ranked #1 of 5 in In-Wall & In-Ceiling Speakers - KEF Ci3160RLM-THX: $2,289.99 per pair Amazon eBay

Pros: Independently measured by Audio Science Review on a Klippel rig to a genuine 58.6Hz at -3dB and roughly 36Hz at -10dB, with an on-axis slope of just -0.02dB per octave, essentially flat. Directivity is the most consistent of any in-wall or in-ceiling speaker in this category, with the tightest spread in its sound-power directivity index across the measured band. The rotatable, tiltable driver module (the RLM in its name) lets the tweeter and midrange aim toward the listening area even when the cabinet itself has to be installed off to one side. THX Ultra2 certified, with a 4-driver, 3-way layout: dual 6.5” woofers flanking a 6.5” Uni-Q coaxial midrange/tweeter. Measured bass extension of 58.6Hz (-3dB).

Cons: At $2,299.99 each, a stereo pair runs roughly $4,600, among the most expensive options in this category. Listening-window and sound-power smoothness are moderate rather than class-leading, meaning some unevenness remains once you move off the main listening axis despite the flat on-axis trace. The 660 x 209mm cutout and 106mm mounting depth are large enough that they won’t fit inside a standard 2x4 wall stud bay without modification.

Full KEF Ci3160RLM-THX review and specifications →

Bass Extension (-10dB)	36Hz (measured, spinorama.org ASR data)
Bass Extension (-3dB)	58.6Hz (measured, spinorama.org ASR data)
Certification	THX Ultra2
Dimensions	26.8" x 9.1" x 4.2" (680 x 230 x 105.7 mm)
Drivers	2x 6.5" LF woofers, 6.5" Uni-Q coaxial midrange, 1" vented aluminum dome tweeter with MAT (rotatable/tiltable module)
Enclosure	Open-backed, in-wall
Frequency Response	43Hz-28kHz +/-6dB (manufacturer, open-backed)
Impedance	4 ohms
Mounting Cutout	660mm (H) x 209mm (W)
Power Handling	50-350W recommended amplifier power
Sensitivity	89dB
Spinorama Preference Score	4.62
Spinorama Preference Score with Perfect Sub	7.14
Weight	26.5 lbs (12 kg)

Check current price at Amazon ($2,289.99) →Search eBay for KEF Ci3160RLM-THX →

Links
- KEF Ci3160RLM-THX Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

Ranked #2 of 5 in In-Wall & In-Ceiling Speakers - KEF CI250RRM-THX: $5,999.98 per pair Abt Electronics eBay

Pros: Independently measured by Audio Science Review to a genuine 51.3Hz at -3dB and roughly 23.3Hz at -10dB, the deepest bass extension of any in-wall or in-ceiling speaker in this category. It’s a THX-certified 3-way coaxial design, a 10” woofer built around a 4” Uni-Q midrange and 1” aluminum dome tweeter, deliberately voiced for the 30-60 degree off-axis angle typical of a ceiling-mounted Dolby Atmos height or surround channel rather than a straight-down listening position. Run through a receiver’s automated room correction, spinorama’s EQ-adjusted figures show its preference score climbing from 3.76 to 4.78, so it responds well to correction. Measured bass extension of 51.3Hz (-3dB).

Cons: At $2,999.99 each, this is the most expensive speaker in this category. Its raw on-axis measurement trails the Ci3160RLM-THX (preference score 3.76 vs. 4.62) since the driver array is tuned for off-axis dispersion rather than a flat straight-ahead response, and its on-axis deviation averages 1.14dB, one of the roughest of the batch measured on-axis.

Full KEF CI250RRM-THX review and specifications →

Bass Extension (-10dB)	23.3Hz (measured, spinorama.org ASR data)
Bass Extension (-3dB)	51.3Hz (measured, spinorama.org ASR data)
Certification	THX
Dimensions	13.6" x 13.6" x 6.9" (346 x 346 x 175 mm) (168mm mounting depth)
Drivers	10" LF woofer, 4" Uni-Q midrange, 1" vented aluminum dome tweeter with MAT (3-way coaxial)
Enclosure	Open-backed, in-ceiling
Frequency Response	28Hz-20kHz +/-6dB (manufacturer, open-backed)
Impedance	8 ohms
Mounting Cutout	300mm (11.81 in)
Power Handling	50-250W recommended amplifier power
Sensitivity	89dB
Spinorama Preference Score	3.76
Spinorama Preference Score with Perfect Sub	5.77
Weight	13.2 lbs (6 kg)

Check current price at Abt Electronics ($2,999.99) →Search eBay for KEF CI250RRM-THX →

Links
- KEF CI250RRM-THX Official Page
Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements (spinorama.org) More from Audio Science Review →
Head-to-Head Comparisons

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Small Size Powered Bookshelf Speakers

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Large Size Powered Bookshelf Speakers

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Large Size Powered Floorstanding Speakers

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