Short answer: the JBL 4329P for better sound quality, the JBL 708P for the lower price. The JBL 4329P ranks #19 of 40 powered bookshelf speakers at $4500. The JBL 708P ranks #20 at $4000, $500 cheaper.
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. Watch for: No HDMI input, a real drawback if you want to run these directly off a TV’s ARC.
What the JBL 708P gets right: CEA2034 spinorama shows extremely good frequency response both on- and off-axis, with excellent horizontal directivity. The catch: A port resonance creates a mild rise around 600-900Hz.
Buy the JBL 4329P if sound quality matters more than the price. Buy the JBL 708P if the price matters more than sound quality.
Specifications Side By Side
| JBL 4329P | JBL 708P | |
|---|---|---|
| Price | $4,500 | $4000 |
| Ranked | #19 of 40 in Large Size Powered Bookshelf Speakers | #20 of 40 in Large Size Powered Bookshelf Speakers |
| Drivers | 8" midwoofer, 1" compression driver with JBL High-Definition Imaging horn | 8" woofer, 2409H 1" compression driver |
| Dimensions | 20.3"H x 12.6"W x 12.7"D | 17.2"H x 9.8"W x 11.5"D (438 x 248 x 292 mm) |
| Weight | 34.5 lbs (primary), 34.3 lbs (secondary) | 25.1 lbs / 11.4 kg each |
| Sensitivity | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) | - |
| Bass Extension (-3dB) | 31Hz (measured, Erin’s Audio Corner) | 82Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 27Hz (measured, Erin’s Audio Corner) | 62Hz (measured, Audio Science Review) |
| Frequency Response | 30Hz - 20kHz (anechoic, manufacturer specified) | 41Hz - 25kHz (+/-3dB) (Manufacturer specified) |
| Inputs | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 | - |
| Woofer Cabinet | ported | - |
| App | - | No |
| EQ | - | No |
| DSP | - | No |
| Output Power | - | 500W total (250W woofer, 250W tweeter) |
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- Buchardt A500 vs Buchardt A10
- HEDD Type 20 MK2 vs Buchardt A10
- Genelec 8040B vs Buchardt A10
- Neumann KH 310 A vs JBL 708P
- Buchardt A500 vs JBL 4329P
The Two Speakers In Full
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 |
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JBL 708P: $4000 Bhphotovideo
Pros: CEA2034 spinorama shows extremely good frequency response both on- and off-axis, with excellent horizontal directivity. Bi-amplified 500W design (250W woofer, 250W compression driver) handles an 8” woofer and JBL’s 2409H compression tweeter.
Cons: A port resonance creates a mild rise around 600-900Hz. Vertical dispersion is narrower than horizontal, so staying within a few degrees of the tweeter axis matters. Distortion climbs at 96dB SPL, with the tweeter reaching about 2.5% THD at elevated levels.
Full JBL 708P review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 62Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 82Hz (measured, Audio Science Review) |
| DSP | No |
| Dimensions | 17.2"H x 9.8"W x 11.5"D (438 x 248 x 292 mm) |
| Drivers | 8" woofer, 2409H 1" compression driver |
| EQ | No |
| Frequency Response | 41Hz - 25kHz (+/-3dB) (Manufacturer specified) |
| Output Power | 500W total (250W woofer, 250W tweeter) |
| Weight | 25.1 lbs / 11.4 kg each |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons