Neumann KH 310 A vs JBL 4305P

Short answer: the Neumann KH 310 A for measured directivity, the JBL 4305P for compact bass reach. The KH 310 A shows a near-perfect on-axis response with superb directivity control and minimal off-axis variation, though a dip around 80Hz was flagged. The 4305P measured a 45Hz F3 with solid 40-50Hz in-room extension for a compact 5.25-inch monitor, but its limiter becomes conspicuous around 96dB.

What the JBL 4305P gets right: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension (excellent for a compact 5.25-inch active monitor). The catch: The limiter becomes conspicuous around 96dB: Erin measured about 8dB lost near 50Hz at the highest drive and achieved roughly 93dB unweighted at 2m in-room.

Buy the Neumann KH 310 A if sound quality is the priority over the price, or the JBL 4305P if the price is the priority over sound quality.

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Specifications Side By Side

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The Two Speakers In Full

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 7.70 ideal-subwoofer score support balanced monitoring with useful full-range capability. Measured bass extension of 35.2Hz (-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. An unexplained dip around 80Hz shows in the measurements.

Full Neumann KH 310 A review and specifications →

AES Input	No
Amplifier Power	290W total (150W woofer, 70W mid, 70W tweeter)
App	No
Aux Input	No
Bass Extension (-10dB)	28.3Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points)
Bass Extension (-3dB)	35.2Hz (measured, Audio Science Review)
Bluetooth	No
Coaxial Input	No
DSP	No
Dimensions	10” x 15.1” x 11.5” (253 x 383 x 292 mm) (H x W x D)
Drivers	8.25” woofer, 3” midrange, 1” tweeter
EQ	No
Frequency Response	34Hz - 21kHz (+/-3dB) (Manufacturer specified)
HDMI Input	No
Inputs	XLR (balanced analog)
Optical Input	No
RCA Input	No
Spinorama Preference Score	6.21
Spinorama Preference Score with Perfect Sub	7.70
TRS Input	No
USB Input	No
Weight	28.7 lbs (13.0 kg)
XLR Input	Yes

• 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)
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JBL 4305P: $1,499.99 per pair Amazon JBL eBay

Pros: The measured 1.5dB response span from 300Hz to 5kHz supports even mids, with a 7.45 ideal-subwoofer score and 45.4Hz -3dB bass extension. Integrated consumer connectivity makes this a more convenient living-room system than many studio monitors. Measured bass extension of 45Hz (-3dB).

Cons: Crossover-region directivity changes mean the narrow on-axis span does not describe every listening angle. Limiting becomes relevant at high output, particularly with bass-heavy music. It suits near- to midfield listening better than the largest high-output systems here. Erin measured about 8dB lost near 50Hz at the highest drive level and reached roughly 93dB unweighted at 2m in-room.

Full JBL 4305P review and specifications →

AES Input	No
Amplifier Power	300W system: 125W LF + 25W HF per speaker
Aux Input	Yes
Bass Extension (-10dB)	40.5Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)	45Hz (measured, Erin’s Audio Corner)
Bluetooth	Yes, 5.1
Coaxial Input	No
Dimensions	13.2H x 8.3W x 8.8D inches
Drivers	5.25-inch pulp woofer; 1-inch annular compression driver
Frequency Response	45Hz - 25kHz (-6dB) (Manufacturer specified)
HDMI Input	No
Inputs	XLR/TRS combo, 3.5mm Aux, Optical, USB-B, Ethernet
Maximum SPL	~93dB at 2m in-room before limiting (measured, Erin’s Audio Corner)
Optical Input	Yes
RCA Input	No
Spinorama Preference Score	5.44
Spinorama Preference Score with Perfect Sub	7.45
TRS Input	Yes
USB Input	Yes
Weight	Primary 14.6 lbs (6.6 kg), Secondary 14.1 lbs (6.4 kg)
XLR Input	Yes

• Links
  • Official JBL product page
• Reviews, Comparisons and Sound Samples
  • Erin’s Audio Corner video review More from Erin’s Audio Corner →
  • Erin’s Audio Corner written measurements
  • Erin’s Audio Corner Measurements (spinorama.org)
• Head-to-Head Comparisons
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