Short answer: the KEF LSX II LT. It ranks #27 of 58 powered bookshelf speakers by sound quality at $600; the Klipsch The Fives ranks #42 and costs $699, so there is not much of a tradeoff to weigh.
What the KEF LSX II LT offers: 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 KEF Connect app provides genuinely useful DSP control: desk/wall boundary compensation, adjustable bass contour (standard/less/extra), treble trim, and subwoofer integration, letting you tune the sound to wherever it’s placed. Distortion at a moderate 86dB looks good for the speaker’s compact size. Tonal profile stays consistent from 0° to 30° off-axis, so side-seat listeners hear essentially the same balance as someone centered. Extensive connectivity for its size: HDMI, USB, optical, sub output, plus Wi-Fi/Bluetooth. Clearly outperformed the reviewer’s soundbars, including ones bundled with their own subwoofers, as a TV audio replacement. Watch for: 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. F3 of 55Hz and F10 of 46Hz mean it loses much of its bass by around 50Hz; a subwoofer (controllable through the same app) is needed for real low end. Diffraction dips appear around 4-5kHz and again near 8kHz, likely tied to the tweeter housing or surround, giving a mild reduction in treble attack and sibilance. A possible port or enclosure resonance shows up around 800Hz in the rear-radiation measurements, though the reviewer wasn’t certain of the exact cause or whether it’s audible. No analog input on this LT variant, so a turntable can’t be connected directly - only the pricier standard LSX II model includes one.
What the Klipsch The Fives offers: Versatile powered stereo alternative to a soundbar, with HDMI ARC, USB, optical, Bluetooth, phono/line RCA and subwoofer output. Erin measured F3 at 57Hz and found generally benign harmonic distortion at normal levels. The horn-loaded 1-inch tweeter provides useful controlled radiation, real-wood cabinets are well finished, and firmware offers Dynamic Bass, Flat and Bass Cut profiles; Bass Cut is the closest to neutral. Watch for: The nominal Flat mode is bass-heavy rather than flat, and the response/directivity transition around the 4.5-inch woofer and Tractrix horn requires careful placement or EQ. Erin measured roughly 2.5dB compression around 200Hz and still more below 80Hz at high drive; limiting protects the small woofer but audibly removes bass dynamics. A subwoofer is advisable, especially at distance. This amplified system has no meaningful passive impedance or sensitivity specification.
Buy the KEF LSX II LT. It ranks higher for sound quality than the Klipsch The Fives and costs less, so there is no real case for the other one.
Specifications Side By Side
| KEF LSX II LT | Klipsch The Fives | |
|---|---|---|
| Price | $600.00 | $699/pair |
| Ranked | #27 of 58 in Medium Size Powered Bookshelf Speakers | #42 of 58 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 9.5"H x 6.1"W x 7.1"D (241.3 x 154.9 x 180.3 mm) | - |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth | HDMI ARC, USB, optical, Bluetooth, phono/line RCA |
| Outputs | RCA Subwoofer | - |
| Drivers | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter | 1" horn-loaded tweeter; 4.5" woofer |
| Weight | 15 lbs / 6.8 kg | - |
| App | No | - |
| Bluetooth | No | - |
| EQ | No | - |
| Output Power | 100w RMS Per Speaker | - |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | 57Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46Hz (measured, Erin’s Audio Corner) | 47.3Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) | Not applicable (active DSP loudspeaker) |
| DSP | - | Dynamic Bass, Flat and Bass Cut profiles |
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The Two Speakers In Full
KEF LSX II LT: $600.00 Amazon eBay
Pros: 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 KEF Connect app provides genuinely useful DSP control: desk/wall boundary compensation, adjustable bass contour (standard/less/extra), treble trim, and subwoofer integration, letting you tune the sound to wherever it’s placed. Distortion at a moderate 86dB looks good for the speaker’s compact size. Tonal profile stays consistent from 0° to 30° off-axis, so side-seat listeners hear essentially the same balance as someone centered. Extensive connectivity for its size: HDMI, USB, optical, sub output, plus Wi-Fi/Bluetooth. Clearly outperformed the reviewer’s soundbars, including ones bundled with their own subwoofers, as a TV audio replacement.
Cons: 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. F3 of 55Hz and F10 of 46Hz mean it loses much of its bass by around 50Hz; a subwoofer (controllable through the same app) is needed for real low end. Diffraction dips appear around 4-5kHz and again near 8kHz, likely tied to the tweeter housing or surround, giving a mild reduction in treble attack and sibilance. A possible port or enclosure resonance shows up around 800Hz in the rear-radiation measurements, though the reviewer wasn’t certain of the exact cause or whether it’s audible. No analog input on this LT variant, so a turntable can’t be connected directly - only the pricier standard LSX II model includes one.
Full KEF LSX II LT review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 46Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin's Audio Corner) |
| Bluetooth | 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 |
| Inputs | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Output Power | 100w RMS Per Speaker |
| Outputs | RCA Subwoofer |
| Sensitivity | 84dB (measured at 0.3V/1m, Erin's Audio Corner) |
| Weight | 15 lbs / 6.8 kg |
- Links
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Klipsch The Fives: $699/pair Amazon eBay
Pros: Versatile powered stereo alternative to a soundbar, with HDMI ARC, USB, optical, Bluetooth, phono/line RCA and subwoofer output. Erin measured F3 at 57Hz and found generally benign harmonic distortion at normal levels. The horn-loaded 1-inch tweeter provides useful controlled radiation, real-wood cabinets are well finished, and firmware offers Dynamic Bass, Flat and Bass Cut profiles; Bass Cut is the closest to neutral.
Cons: The nominal Flat mode is bass-heavy rather than flat, and the response/directivity transition around the 4.5-inch woofer and Tractrix horn requires careful placement or EQ. Erin measured roughly 2.5dB compression around 200Hz and still more below 80Hz at high drive; limiting protects the small woofer but audibly removes bass dynamics. A subwoofer is advisable, especially at distance. This amplified system has no meaningful passive impedance or sensitivity specification.
Full Klipsch The Fives review and specifications →
| Bass Extension (-10dB) | 47.3Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 57Hz (measured, Erin's Audio Corner) |
| DSP | Dynamic Bass, Flat and Bass Cut profiles |
| Drivers | 1" horn-loaded tweeter; 4.5" woofer |
| Inputs | HDMI ARC, USB, optical, Bluetooth, phono/line RCA |
| Sensitivity | Not applicable (active DSP loudspeaker) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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