Short answer: the Cambridge Audio L/R S on measured sound quality, the Mackie CR3-X on price. The Cambridge Audio L/R S ranks #4 of 23 powered bookshelf speakers at $549. The Mackie CR3-X ranks #17 at $99.99, $449.01 cheaper.
What the Mackie CR3-X offers: 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. Watch for: 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.
What the Cambridge Audio L/R S offers: A 2-way active bookshelf pair built for near-field desktop use, with a 21mm aluminum tweeter and a 3-inch long-throw woofer on each speaker. Erin’s Audio Corner measured a very neutral on-axis response with good directivity control up through the 2-3kHz handoff to the tweeter, an F3 of about 57Hz and F10 of about 50Hz, and output held within roughly plus or minus 2.5dB from 80Hz to 20kHz. Horizontal dispersion of about plus or minus 60 degrees and a vertical window of about plus 30 to minus 20 degrees make it forgiving of off-center desktop seating. Two rear switches (a desktop-placement compensation switch and a near-wall/free-space switch) plus in-app DSP for room size, wall distance, and reflective surface type let you tune the in-room response rather than just hoping placement works out, and the reviewer noted an audible tightening of the bass moving between room-size settings. Rear connectivity includes RCA, optical digital, USB-C, and a dedicated subwoofer output. Watch for: Maximum clean output is limited: Erin’s Audio Corner measured about 86dB before the onboard limiter engages around 96dB to protect the drivers, so this is a near-field or small-room speaker rather than one built to fill a living room. Each speaker’s Class D amplifier splits only 50W to the woofer and 50W to the tweeter, modest for the class. The DSP room-correction options are preset-based rather than a true microphone-measured calibration at the listening position, so results depend on picking settings that match your actual room.
Buy the Mackie CR3-X when the price outweighs sound quality for you, and the Cambridge Audio L/R S when sound quality outweighs the price instead.
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Specifications Side By Side
| Mackie CR3-X | Cambridge Audio L/R S | |
|---|---|---|
| Price | $99.99 per pair | $549.00 per pair |
| Ranked | #17 of 23 in Small Size Powered Bookshelf Speakers | #4 of 23 in Small Size Powered Bookshelf Speakers |
| Dimensions | 8.1"H x 5.5"W x 7.1"D (205.7 x 139.7 x 180.3 mm) | 5.3" (134 mm) W x 226mm H x 180mm D (each) |
| Frequency Response | 80 Hz-20 kHz (-3dB) (Manufacturer specified) | 55Hz - 24kHz (±3dB, manufacturer specified) |
| Inputs | RCA, Aux | RCA, optical digital, USB-C |
| Outputs | 1/8" headphone jack | Subwoofer, wired speaker-to-speaker link |
| Weight | 7.7 lbs (3.5 kg) | 6.6 lbs (3.0kg) primary speaker, 5.7 lbs (2.6kg) secondary speaker |
| Drivers | 3" woofer, 0.75" silk dome tweeter | 21mm aluminum dome tweeter, 3" long-throw woofer |
| App | No | Yes |
| Bass Extension (-10dB) | 70Hz (measured, Erin's Audio Corner) | 50Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 80Hz (measured, Erin's Audio Corner) | 57Hz (measured, Erin's Audio Corner) |
| Bluetooth | No | - |
| EQ | No | - |
| Amplifier Power | 50W total (25W per speaker) | 100W total (50W to woofer, 50W to tweeter, per speaker) |
| Sensitivity | 96dB (measured at 0.3V/1m, Erin's Audio Corner) | - |
| Maximum SPL | 92dB @ 1m (manufacturer specified) | - |
| Spinorama Preference Score | 1.95 | - |
| Spinorama Preference Score with Perfect Sub | 4.87 | - |
| Headphone Output | Yes | - |
| Bluetooth Codecs | - | SBC, AAC, aptX, aptX HD |
| DSP | - | Yes, room size, wall distance, and reflective surface correction; desktop-placement and near-wall/free-space switches |
| Subwoofer Output | - | Yes |
Related Speaker Comparisons
How Cambridge Audio L/R S compares with other leading options:
- Genelec 8010A vs Cambridge Audio L/R S
- Adam Audio D3v vs Cambridge Audio L/R S
- IK Multimedia iLoud Micro Monitor vs Cambridge Audio L/R S
- Edifier M60 vs Cambridge Audio L/R S
- HiVi Swan X3 vs Cambridge Audio L/R S
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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The Two Speakers In Full
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) |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner Review Measurements More from Erin’s Audio Corner →
- Audio Science Review Measurements More from Audio Science Review →
- DSAUDIO.review: Presonus Eris E3.5 vs Mackie CR3 Sound Demo w/ Bass Test More from DSAUDIOreview →
- DSAUDIO.review: Mackie CR3-X vs Edifier R1280T Sound, Distortion & Frequency Response Comparison
- Erin’s Audio Corner: Mackie CR3-X vs PreSonus E3.5 Budget Monitor Showdown!
- Erin’s Audio Corner Measurements (spinorama.org)
- Head-to-Head Comparisons
Cambridge Audio L/R S: $549.00 per pair Amazon eBay
Pros: A 2-way active bookshelf pair built for near-field desktop use, with a 21mm aluminum tweeter and a 3-inch long-throw woofer on each speaker. Erin’s Audio Corner measured a very neutral on-axis response with good directivity control up through the 2-3kHz handoff to the tweeter, an F3 of about 57Hz and F10 of about 50Hz, and output held within roughly plus or minus 2.5dB from 80Hz to 20kHz. Horizontal dispersion of about plus or minus 60 degrees and a vertical window of about plus 30 to minus 20 degrees make it forgiving of off-center desktop seating. Two rear switches (a desktop-placement compensation switch and a near-wall/free-space switch) plus in-app DSP for room size, wall distance, and reflective surface type let you tune the in-room response rather than just hoping placement works out, and the reviewer noted an audible tightening of the bass moving between room-size settings. Rear connectivity includes RCA, optical digital, USB-C, and a dedicated subwoofer output. Measured bass extension of 57Hz (-3dB).
Cons: Maximum clean output is limited: Erin’s Audio Corner measured about 86dB before the onboard limiter engages around 96dB to protect the drivers, so this is a near-field or small-room speaker rather than one built to fill a living room. Each speaker’s Class D amplifier splits only 50W to the woofer and 50W to the tweeter, modest for the class. The DSP room-correction options are preset-based rather than a true microphone-measured calibration at the listening position, so results depend on picking settings that match your actual room.
Full Cambridge Audio L/R S review and specifications →
| Amplifier Power | 100W total (50W to woofer, 50W to tweeter, per speaker) |
|---|---|
| App | Yes |
| Bass Extension (-10dB) | 50Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 57Hz (measured, Erin's Audio Corner) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD |
| DSP | Yes, room size, wall distance, and reflective surface correction; desktop-placement and near-wall/free-space switches |
| Dimensions | 5.3" (134 mm) W x 226mm H x 180mm D (each) |
| Drivers | 21mm aluminum dome tweeter, 3" long-throw woofer |
| Frequency Response | 55Hz - 24kHz (±3dB, manufacturer specified) |
| Inputs | RCA, optical digital, USB-C |
| Outputs | Subwoofer, wired speaker-to-speaker link |
| Subwoofer Output | Yes |
| Weight | 6.6 lbs (3.0kg) primary speaker, 5.7 lbs (2.6kg) secondary speaker |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Cambridge Audio L/R S vs Adam Audio D3v
- Cambridge Audio L/R S vs IK Multimedia iLoud Micro Monitor
- Cambridge Audio L/R S vs Edifier M60
- Cambridge Audio L/R S vs Genelec 8010A
- Cambridge Audio L/R S vs HiVi Swan X3
- Cambridge Audio L/R S vs Edifier MR3
- Cambridge Audio L/R S vs Klipsch ProMedia Lumina
- Cambridge Audio L/R S vs Fiio SP3
- See all 9 comparisons