Short answer: the JBL 4305P. It ranks #28 of 66 powered bookshelf speakers by sound quality at $2200; the JBL 4329P ranks #44 and costs $4500, so there is little reason to consider the other one.
What the JBL 4305P offers: Erin measured a 45Hz F3 and heard solid 40–50Hz in-room extension (excellent for a compact 5.25-inch active monitor). Watch for: 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…
What the JBL 4329P offers: 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… Watch for: No HDMI input, a real drawback if you want to run these directly off a TV’s ARC.
Buy the JBL 4305P. It ranks higher for sound quality than the JBL 4329P and costs less, which settles it without a real tradeoff to make.
Specifications Side By Side
| JBL 4305P | JBL 4329P | |
|---|---|---|
| Price | $2,200/pair | $4,500 |
| Ranked | #28 of 66 in Large Size Powered Bookshelf Speakers | #44 of 66 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 45Hz (measured, Erin’s Audio Corner) | 31Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 40.5Hz (measured, Erin’s Audio Corner) | 27Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Not applicable (active DSP loudspeaker) | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Maximum Output | ~93dB at 2m in-room before limiting (measured, Erin’s Audio Corner) | - |
| Amplification | 300W system: 125W LF + 25W HF per speaker | - |
| Drivers | 5.25-inch pulp woofer; 1-inch annular compression driver | 8" midwoofer, 1" compression driver with JBL High-Definition Imaging horn |
| Dimensions | 13.2H x 8.3W x 8.8D inches | 20.3"H x 12.6"W x 12.7"D |
| Weight | - | 34.5 lbs (primary), 34.3 lbs (secondary) |
| Frequency Response | - | 30Hz - 20kHz (anechoic, manufacturer specified) |
| Inputs | - | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 |
| Bluetooth Codecs | - | SBC, aptX Adaptive |
| Woofer Cabinet | - | ported |
Related Speaker Comparisons
How JBL 4305P compares with other leading options:
- Genelec 8351B vs JBL 4305P
- Neumann KH420 vs JBL 4305P
- Genelec 8361A vs JBL 4305P
- JBL 4305P vs Genelec 8341A
- Neumann KH 150 vs JBL 4305P
Prices on this page were last checked September 8, 2026 at 6:02 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
JBL 4305P: $2,200/pair Amazon JBL eBay
Pros: The measured 1.5dB response span from 300Hz to 5kHz supports even mids, with a 6.54 ideal-subwoofer score and 45.4Hz -3dB bass extension. Integrated consumer connectivity makes this a more convenient living-room system than many studio monitors.
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.
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) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
JBL 4329P: $4,500 Amazon 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.
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 5.83 ideal-subwoofer score trails the 4305P. There is no HDMI connection for the simplest TV hookup.
Full JBL 4329P review and specifications →
| Bass Extension (-10dB) | 27Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 31Hz (measured, Erin's Audio Corner) |
| Bluetooth Codecs | SBC, aptX Adaptive |
| 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 |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons