Short answer: the JBL 705P for level, the KEF LSX II LT for a forgiving sweet spot. The LSX II LT’s coaxial driver gives wide, consistent dispersion of about +/-60 degrees each way, but its small drivers are SPL-limited: bass compression starts around 88-92dB/1m and multitone distortion crosses the 3% threshold near 96dB. The 705P plays louder, though its on-axis curve shows a likely port cancellation near 750Hz.
On the JBL 705P side: CEA2034 spinorama shows flat response with excellent directivity, similar to its larger 708P sibling. Set against that: A cancellation around 750Hz (likely port-related) and a bit of boosted response at the 1.75kHz crossover show up in the on-axis curve.
What the KEF LSX II LT gets right: Coaxial (Uni-Q-style) driver keeps the tweeter centered in the midrange, giving wide and consistent dispersion both horizontally and vertically (about ±60° each) - a wide sweet spot for multiple seats or positions. The catch: Small drivers mean it’s SPL-limited: bass compression kicks in around 88-92dB/1m per speaker, and multitone distortion crosses the reviewer’s 3% threshold around 96dB - not intended for loud or large-room duty.
Buy the KEF LSX II LT. It is rated higher for sound quality than the JBL 705P and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| JBL 705P | KEF LSX II LT | |
|---|---|---|
| Price | $1998 per pair | $479.99 per pair |
| Ranked | #32 of 68 in Medium Size Powered Bookshelf Speakers | #27 of 68 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 47.6Hz (measured, Audio Science Review) | 55Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 38.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 46Hz (measured, Erin’s Audio Corner) |
| Dimensions | 10.6”H x 5.9”W x 10.8”D (268 x 151 x 274 mm) | 9.5”H x 6.1”W x 7.1”D (241.3 x 154.9 x 180.3 mm) |
| Frequency Response | 39Hz - 36kHz (Manufacturer specified) | 54Hz - 28kHz (±3dB) (Manufacturer specified) |
| Weight | 12.6 lbs (5.7 kg) each | 15 lbs (6.8 kg) |
| Drivers | 5” woofer, 2409H 1” compression driver | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| App | No | No |
| EQ | No | No |
| DSP | No | - |
| Amplifier Power | 500W total (250W woofer, 250W tweeter) | 100w RMS Per Speaker |
| Spinorama Preference Score | 4.70 | 4.81 |
| Spinorama Preference Score with Perfect Sub | 6.71 | 7.03 |
| Inputs | XLR/TRS combo (analog), XLR AES3 (digital) | Wifi, USB-C, HDMI, Optical, Bluetooth |
| XLR Input | Yes | No |
| RCA Input | No | No |
| TRS Input | Yes | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | Yes |
| AES Input | Yes | No |
| Aux Input | No | No |
| Bluetooth | No | Yes |
| Outputs | - | RCA Subwoofer |
| Sensitivity | - | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Subwoofer Output | - | Yes |
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Prices on this page were last checked October 2, 2026 at 10:18 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 705P: $1998 per pair B&H Photo Video eBay
Pros: ASR’s data gives bass reaching -3dB around 48Hz and a 6.71 ideal-subwoofer preference score. Its waveguided compression driver and dedicated amplification are suited to studio use, and the broad response trend is close to level. It has useful low-frequency reach for a five-inch monitor. Measured bass extension of 47.6Hz (-3dB).
Cons: The standalone score is 4.70, and a localized cancellation near 750Hz contributes to the large 7.8dB midrange response span. A crossover-region rise also prevents reference-flat reproduction. An average flat trend does not erase these features, and amplifier wattage is not a measured clean-SPL rating. The data does not support calling it uniformly flat simply because it shares technology with larger JBL models.
Full JBL 705P review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 500W total (250W woofer, 250W tweeter) |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 38.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 47.6Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| DSP | No |
| Dimensions | 10.6”H x 5.9”W x 10.8”D (268 x 151 x 274 mm) |
| Drivers | 5” woofer, 2409H 1” compression driver |
| EQ | No |
| Frequency Response | 39Hz - 36kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR/TRS combo (analog), XLR AES3 (digital) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 4.70 |
| Spinorama Preference Score with Perfect Sub | 6.71 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 12.6 lbs (5.7 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
KEF LSX II LT: $479.99 per pair Amazon eBay
Pros: The coincident driver provides useful consistency across listening positions, and the app offers placement and subwoofer adjustments. Erin’s measurements give preference scores of 4.81 standalone and 7.03 with an ideal subwoofer, with -3dB bass around 56Hz. HDMI and USB connectivity make it convenient for a small TV or desktop system. Horizontal and vertical dispersion both reach about ±60°, giving a broad sweet spot for more than one seat. Measured bass extension of 55Hz (-3dB), with a measured sensitivity of 84dB.
Cons: The 3.4dB midrange response span and treble-region dips keep it below more neutral monitors. The existing review finds bass compression around 88-92dB/1m and rising distortion at higher levels, so the small drivers suit close listening rather than a large room. This LT version has no analog input; a turntable cannot plug straight into it.
Full KEF LSX II LT review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100w RMS Per Speaker |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) |
| Bluetooth | Yes |
| Coaxial Input | No |
| Dimensions | 9.5”H x 6.1”W x 7.1”D (241.3 x 154.9 x 180.3 mm) |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| EQ | No |
| Frequency Response | 54Hz - 28kHz (±3dB) (Manufacturer specified) |
| HDMI Input | Yes |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Optical Input | Yes |
| Outputs | RCA Subwoofer |
| RCA Input | No |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.81 |
| Spinorama Preference Score with Perfect Sub | 7.03 |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | Yes |
| Weight | 15 lbs (6.8 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Transform Your Sound System with the KEF LSX II LT Speaker More from Erin’s Audio Corner →
- Erin’s Audio Corner Website: KEF LSX II LT
- Erin’s Audio Corner Measurements (spinorama.org)
- Jasper Tech: Best Desktop Computer Speakers for Every Budget – 2026 More from Jasper Tech →
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