Neumann KH 150 vs JBL 4305P

Short answer: the Neumann KH 150 for better sound quality, the JBL 4305P for the lower price. The Neumann KH 150 ranks #14 of 48 powered bookshelf speakers at $3398. The JBL 4305P ranks #15 at $2200, $1198 cheaper.

On the Neumann KH 150 side: Neumann’s Mathematically Modelled Dispersion waveguide produces a listening window smoothness score of 0.69 with a steadily narrowing directivity index through the treble, and the 6.5 inch woofer reaches a genuine 39.6Hz extension point. The catch: The sound power directivity index has the widest standard deviation of any speaker in this batch, 3.89, meaning off axis energy tracks the on axis response a little less consistently than the tightest speakers here as frequency rises.

The case for the JBL 4305P: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension—excellent for a compact 5.25-inch active monitor. Set against that: 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, so this is a near/midfield system rather than a high-output theater speaker.

Buy the Neumann KH 150 if sound quality matters more than the price. Buy the JBL 4305P if the price matters more than sound quality.

Specifications Side By Side

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The Two Speakers In Full

Neumann KH 150: $3,398/pair Bhphotovideo

Pros: Neumann’s Mathematically Modelled Dispersion waveguide produces a listening window smoothness score of 0.69 with a steadily narrowing directivity index through the treble, and the 6.5 inch woofer reaches a genuine 39.6Hz extension point. FIR based phase correction and 118.7dB max SPL give it real headroom for a compact two way, and the onboard DSP includes adjustable bass, low mid, and treble shelving plus optional MA 1 automatic room calibration.

Cons: The sound power directivity index has the widest standard deviation of any speaker in this batch, 3.89, meaning off axis energy tracks the on axis response a little less consistently than the tightest speakers here as frequency rises. No Bluetooth or wireless input, it needs a balanced XLR or S/PDIF source. At 8kg (17.6 lbs) per cabinet plus an external power brick it needs a proper stand rather than a bookshelf. Its measured preference score trails Neumann’s own larger KH 310A and KH 420 monitors, so buyers chasing the deepest bass in the KH line should look further up the range.

Full Neumann KH 150 review and specifications →

Bass Extension (-10dB)	34.2Hz (measured, Audio Science Review)
Bass Extension (-3dB)	39.6Hz (measured, Audio Science Review)
Country	Germany
Crossover Points	1.7kHz
Dimensions	13.6"H x 8.9"W x 10.7"D (345 x 225 x 273 mm) (13.58 x 8.86 x 10.75 in)
Drivers	1" tweeter, 6.5" woofer
Enclosure	ported
Frequency Response	39Hz-20.4kHz +/-3dB
Max SPL	118.7dB @ 1m half space
Power Output (Watts)	245W total (145W woofer, 100W tweeter, 10% THD+N)
Warranty	2 years
Weight	17.6 lbs / 8.0 kg (17.6 lbs) each

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• Links
  • Neumann KH 150 Official Page
• Reviews, Comparisons and Sound Samples
  • Audio Science Review Measurements
  • Audio Science Review Measurements (spinorama.org)
  • Reddit Search for Neumann KH 150 Review
• Head-to-Head Comparisons
  • Neumann KH 150 vs Neumann KH 310 A
  • Neumann KH 150 vs Kali Audio IN-8
  • Neumann KH 150 vs Focal Alpha 65 EVO
  • Neumann KH 150 vs Kali Audio LP-6 V2
  • Neumann KH 150 vs Genelec 8040B
  • Neumann KH 150 vs Genelec 8050B
  • Neumann KH 150 vs JBL 4329P
  • Neumann KH 150 vs JBL 708P
  • See all 15 comparisons

JBL 4305P: $2,200/pair Amazon JBL

Pros: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension—excellent for a compact 5.25-inch active monitor. Tonality is neutral and non-fatiguing, vocal coloration is absent, imaging is precise, and the HDI horn maintains near-constant horizontal directivity above 2kHz. Each speaker is bi-amplified (125W LF + 25W HF), while USB, optical, balanced analog, AirPlay 2, Chromecast, Bluetooth and 24/192 wired interconnect make this an unusually complete system. Grilles caused no meaningful response penalty.

Cons: 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, so this is a near/midfield system rather than a high-output theater speaker. A baffle discontinuity produces a 1–2kHz directivity mismatch that cannot be corrected uniformly in the vertical plane; stay within about +/-5° of tweeter height. Soundstage depth and layering trailed the KEF Reference 1 Meta, and wireless speaker linking caps resolution at 24/96.

Full JBL 4305P review and specifications →

Amplification	300W system: 125W LF + 25W HF per speaker
Bass Extension (-10dB)	40.5Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	45Hz (measured, Erin's Audio Corner)
Dimensions	13.2H x 8.3W x 8.8D inches
Drivers	5.25-inch pulp woofer; 1-inch annular compression driver
Maximum Output	~93dB at 2m in-room before limiting (measured, Erin's Audio Corner)
Sensitivity	Not applicable (active DSP loudspeaker)

As an eBay Partner, we may be compensated if you make a purchase.

• Links
  • Official JBL product page
• Reviews, Comparisons and Sound Samples
  • Erin’s Audio Corner video review
  • Erin’s Audio Corner written measurements
  • Erin’s Audio Corner Measurements (spinorama.org)
  • Reddit Search for JBL 4305P Review
• Head-to-Head Comparisons
  • JBL 4305P vs Neumann KH 310 A
  • JBL 4305P vs Focal Alpha 65 EVO
  • JBL 4305P vs Buchardt A500
  • JBL 4305P vs Kali Audio LP-6 V2
  • JBL 4305P vs Kali Audio IN-8
  • JBL 4305P vs JBL 4329P
  • JBL 4305P vs APS Klasik 2020
  • JBL 4305P vs Genelec 8040B
  • See all 25 comparisons