Short answer: the JBL 4329P for genuine full-range bass, the Neumann KH 150 for measured neutrality. The 4329P’s anechoic response extends to 30Hz with a measured F3 of 31Hz and reaches into the low 20s in-room, with strong bass authority. The KH 150 counters with a 0.69 listening window smoothness score, a steadily narrowing directivity index and a genuine 39.6Hz extension point.
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 is rated higher for sound quality and still sold new, while the JBL 4329P is discontinued.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| Neumann KH 150 | JBL 4329P | |
|---|---|---|
| Price | $3,398 per pair | $4,500 per pair Discontinued |
| Ranked | #8 of 68 in Large Size Powered Bookshelf Speakers | #45 of 68 in Large Size Powered Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | 1” tweeter, 6.5” woofer | 8” midwoofer, 1” compression driver with JBL High-Definition Imaging horn |
| Dimensions | 13.6”H x 8.9”W x 10.7”D (345 x 225 x 273 mm) | 20.3”H x 12.6”W x 12.7”D |
| Weight | 17.6 lbs (8.0 kg) each | 34.4 lbs (15.6 kg) (primary), 34.4 lbs (15.6 kg) (secondary) |
| Amplifier Power | 245W total (145W woofer, 100W tweeter, 10% THD+N) | 300W RMS per speaker (600W total system power) |
| Frequency Response | 39Hz-20.4kHz +/-3dB | 30Hz - 20kHz (anechoic, manufacturer specified) |
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) | 31Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 34.2Hz (measured, Audio Science Review) | 27Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 1.7kHz | - |
| Warranty | 2 years | - |
| Country | Germany | - |
| Maximum SPL | 118.7dB @ 1m half space (manufacturer specified) | - |
| Spinorama Preference Score | 6.65 | 5.40 |
| Spinorama Preference Score with Perfect Sub | 8.38 | 6.72 |
| Inputs | XLR (balanced analog), RCA S/PDIF (digital) | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 |
| XLR Input | Yes | No |
| RCA Input | Yes | No |
| TRS Input | No | No |
| Optical Input | No | Yes |
| Coaxial Input | Yes | No |
| USB Input | No | Yes |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | Yes |
| Bluetooth | No | Yes, 5.3 |
| Sensitivity | - | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Bluetooth Codecs | - | SBC, aptX Adaptive |
| Woofer Cabinet | - | ported |
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Prices on this page were last checked October 3, 2026 at 10:26 PM 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
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 8.38, 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 →
| AES Input | No |
|---|---|
| Amplifier Power | 245W total (145W woofer, 100W tweeter, 10% THD+N) |
| Aux Input | No |
| Bass Extension (-10dB) | 34.2Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 39.6Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | Yes |
| 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 |
| HDMI Input | No |
| Inputs | XLR (balanced analog), RCA S/PDIF (digital) |
| Maximum SPL | 118.7dB @ 1m half space (manufacturer specified) |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 6.65 |
| Spinorama Preference Score with Perfect Sub | 8.38 |
| TRS Input | No |
| USB Input | No |
| Warranty | 2 years |
| Weight | 17.6 lbs (8.0 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL 4329P: $4,500 per pair Discontinued eBay
Pros: Measured -3dB extension of 32.2Hz provides deeper native bass than the smaller 4305P. Integrated amplification and streaming make it convenient for a full-range living-room system, and its larger format is useful when scale matters. Measured bass extension of 31Hz (-3dB), with a measured sensitivity of 102.2dB.
Cons: The measured 4.5dB response span from 300Hz to 5kHz includes a notable midrange dip, so it is not as neutral as its size and price might suggest. Its 6.72 ideal-subwoofer score trails the 4305P. There is no HDMI connection for the simplest TV hookup. Discontinued.
Full JBL 4329P review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 300W RMS per speaker (600W total system power) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 27Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 31Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes, 5.3 |
| Bluetooth Codecs | SBC, aptX Adaptive |
| Coaxial Input | No |
| 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) |
| HDMI Input | No |
| Inputs | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 |
| Optical Input | Yes |
| RCA Input | No |
| Sensitivity | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.40 |
| Spinorama Preference Score with Perfect Sub | 6.72 |
| TRS Input | No |
| USB Input | Yes |
| Weight | 34.4 lbs (15.6 kg) (primary), 34.4 lbs (15.6 kg) (secondary) |
| Woofer Cabinet | ported |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons