Short answer: the Kali Audio IN-8. It ranks #11 of 40 powered bookshelf speakers by sound quality at $499; the JBL 4329P ranks #19 and costs $4500, so there is not much of a tradeoff to weigh.
The case for the Kali Audio IN-8: Three-way coaxial (coincident) driver in a front-ported cabinet, allowing near-wall placement without port noise issues; extensive dip switches handle boundary compensation. The tradeoff: Notable forwardness/brashness in the 4-5kHz range when listened to on-axis, needing about 10° of toe-out (Kali’s own recommendation for the coaxial design) plus some EQ to fully resolve.
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. The catch: No HDMI input, a real drawback if you want to run these directly off a TV’s ARC.
Buy the Kali Audio IN-8. 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
| Kali Audio IN-8 | JBL 4329P | |
|---|---|---|
| Price | $499.00 | $4,500 |
| Ranked | #11 of 40 in Large Size Powered Bookshelf Speakers | #19 of 40 in Large Size Powered Bookshelf Speakers |
| Bass Extension (-10dB) | 36Hz (measured, Erin’s Audio Corner) | 27Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 44Hz (measured, Erin’s Audio Corner) | 31Hz (measured, Erin’s Audio Corner) |
| Dimensions | 17.8"H x 10"W x 11.3"D (452.1 x 254 x 287 mm) | 20.3"H x 12.6"W x 12.7"D |
| Inputs | XLR, RCA | USB, Optical, Bluetooth, Analog, 3.5mm, AirPlay 2 |
| Weight | 22.9 lbs / 10.4 kg each | 34.5 lbs (primary), 34.3 lbs (secondary) |
| Drivers | 8" (203mm) woofer | 8" midwoofer, 1" compression driver with JBL High-Definition Imaging horn |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| DSP | No | - |
| Output Power | 140w Per Speaker | - |
| Sensitivity | 89dB (measured at 0.3V/1m, Erin’s Audio Corner) | 102.2dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Frequency Response | - | 30Hz - 20kHz (anechoic, manufacturer specified) |
| Woofer Cabinet | - | ported |
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The Two Speakers In Full
Kali Audio IN-8: $499.00 Amazon
Pros: Three-way coaxial (coincident) driver in a front-ported cabinet, allowing near-wall placement without port noise issues; extensive dip switches handle boundary compensation, plus XLR/TRS/RCA inputs and a gain-matching volume knob. A built-in limiter makes it essentially impossible to push into mechanical distress - no cabinet buzzing, woofer bottoming, or audible failure even driven hard to 80-95dB in testing. Distortion stays below 1% THD at 86dB and under 3% at 96dB, largely thanks to that limiter. Frequency response and dynamic behavior stay essentially unchanged from 76dB up to 96dB/1m before the limiter engages around 96-102dB. Bass extends smoothly to about 50Hz. A clear step up in linearity over the original V1 version both on-axis and in estimated in-room response, and eliminates the hiss that drew complaints on the V1. Excellent soundstage depth, a benefit typical of coaxial designs, at $800/pair.
Cons: Notable forwardness/brashness in the 4-5kHz range when listened to on-axis, needing about 10° of toe-out (Kali’s own recommendation for the coaxial design) plus some EQ to fully resolve. A dip near the tweeter/voice-coil transition, likely a cancellation effect from the coincident driver’s geometry, is also improved by toeing off-axis. Bass rolls off below about 50Hz, so heavy low-bass material still needs a subwoofer. A minor resonance around 160Hz occasionally made low vocals sound a bit “hot,” though the reviewer rates it minor (about 2/10 in severity). Horizontal soundstage is narrower than non-coaxial alternatives, a typical trade-off of coincident driver designs. Vertical placement tolerance is fairly tight - usable to about ±10°, degrading past ±20°. Designed as a near/midfield monitor for roughly 1-3m listening distances, not intended as a home-theater speaker.
Full Kali Audio IN-8 review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 36Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 44Hz (measured, Erin's Audio Corner) |
| Bluetooth | No |
| DSP | No |
| Dimensions | 17.8"H x 10"W x 11.3"D (452.1 x 254 x 287 mm) |
| Drivers | 8" (203mm) woofer |
| EQ | Yes (Room adjustment) |
| Inputs | XLR, RCA |
| Output Power | 140w Per Speaker |
| Sensitivity | 89dB (measured at 0.3V/1m, Erin's Audio Corner) |
| Weight | 22.9 lbs / 10.4 kg each |
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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
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons