Neumann KH 150 vs JBL 4329P

Short answer: the Neumann KH 150. It ranks #14 of 48 powered bookshelf speakers by sound quality at $3398; the JBL 4329P ranks #20 and costs $4500, so there is not much of a tradeoff to weigh.

The case for the Neumann KH 150: 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.

What the JBL 4329P gets right: Genuinely full-range performance for a bookshelf-style speaker - anechoic response extends to 30Hz (measured F3 31Hz), reaching into the low 20s Hz range in-room depending on placement, with strong bass authority rather than a rolled-off, thin low end. Watch for: No HDMI input, a real drawback if you want to run these directly off a TV’s ARC.

Buy the Neumann KH 150. It ranks higher for sound quality than the JBL 4329P and costs less, so there is no real case for the other one.

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
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JBL 4329P: $4,500 Amazon

Pros: Genuinely full-range performance for a bookshelf-style speaker - anechoic response extends to 30Hz (measured F3 31Hz), reaching into the low 20s Hz range in-room depending on placement, with strong bass authority rather than a rolled-off, thin low end. Wide, constant horizontal directivity through the midrange and into the treble (about ±60°, wider than most horn-loaded designs which tend to run closer to ±40°) gives a wide, stable stereo image without needing to toe the speakers out and lose top-end energy. The reviewer listened for an hour-long sessions repeatedly without listener fatigue, across two very different rooms, with consistently great results in both. Extensive connectivity: USB, Optical, Bluetooth, analog, 3.5mm, AirPlay 2, and 24-bit/192kHz support; comes with a remote.

Cons: No HDMI input, a real drawback if you want to run these directly off a TV’s ARC. The supplied ethernet link cable between the two speakers is short - workable at close range but not long enough for wider speaker placement, so budget for a longer aftermarket cable if your setup needs it. A dip around 900Hz shows up in the on-axis measurement that the reviewer couldn’t fully explain (ruled out the ports as the cause, suspects cabinet edge diffraction), though it wasn’t something that bothered him in listening. At $4,500/pair, this is a serious investment for a bookshelf-format speaker.

Full JBL 4329P review and specifications →

Bass Extension (-10dB)	27Hz (measured, Erin's Audio Corner)
Bass Extension (-3dB)	31Hz (measured, Erin's Audio Corner)
Dimensions	20.3"H x 12.6"W x 12.7"D
Drivers	8" midwoofer, 1" compression driver with JBL High-Definition Imaging horn
Frequency Response	30Hz - 20kHz (anechoic, manufacturer specified)
Inputs	USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2
Sensitivity	102.2dB (measured at 0.3V/1m, Erin's Audio Corner)
Weight	34.5 lbs (primary), 34.3 lbs (secondary)
Woofer Cabinet	ported

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

• Links
  • Official JBL 4329P Product Page
• Reviews, Comparisons and Sound Samples
  • Erin’s Audio Corner: JBL 4329P Will Rock Your Socks Off!
  • Erin’s Audio Corner Website: JBL 4329P
  • Erin’s Audio Corner Measurements (spinorama.org)
  • Reddit Search for JBL 4329P Review
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