Short answer: the KEF LSX II LT for a wide sweet spot, if you listen at moderate levels. Its Uni-Q-style coaxial driver keeps the tweeter centered in the midrange for wide, consistent dispersion of about +/-60 degrees, though small drivers make it SPL-limited: bass compression begins around 88-92dB/1m per speaker and multitone distortion crosses 3% near 96dB. The Presonus Eris E5 XT has smoother directivity but an uneven on-axis response.
On the Presonus Eris E5 XT side: CEA2034 spinorama shows very smooth, consistent directivity through the crossover region and into the treble, with early reflections tracking the on-axis curve closely. Watch for: On-axis response is uneven, with peaks at both frequency extremes and a dip around the roughly 3kHz crossover, giving a bass-and-treble-heavy tonal balance with the midrange partially recessed.
Buy the KEF LSX II LT. It is rated higher for sound quality, and the Presonus Eris E5 XT is discontinued, so it is only available used.
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Specifications Side By Side
| Presonus Eris E5 XT | KEF LSX II LT | |
|---|---|---|
| Price | $239.98 per pair Discontinued | $479.99 per pair |
| Ranked | #47 of 68 in Medium Size Powered Bookshelf Speakers | #27 of 68 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 56.4Hz (measured, Audio Science Review) | 55Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 46Hz (measured, Erin’s Audio Corner) |
| Dimensions | 10.2”H x 7”W x 7.7”D (259.1 x 177.8 x 195.6 mm) | 9.5”H x 6.1”W x 7.1”D (241.3 x 154.9 x 180.3 mm) |
| Frequency Response | 53Hz - 22kHz (Manufacturer specified) | 54Hz - 28kHz (±3dB) (Manufacturer specified) |
| Inputs | TRS, XLR, RCA | Wifi, USB-C, HDMI, Optical, Bluetooth |
| Weight | 10.1 lbs (4.6 kg) each | 15 lbs (6.8 kg) |
| Drivers | 5” (127mm) woofer | 115mm (4.5in.) magnesium/aluminium alloy cone woofer, 19mm (0.75in.) aluminium dome tweeter |
| App | No | No |
| Bluetooth | No | Yes |
| EQ | Yes (Room adjustment) | No |
| Amplifier Power | 80w Per Speaker | 100w RMS Per Speaker |
| Spinorama Preference Score | 3.58 | 4.81 |
| Spinorama Preference Score with Perfect Sub | 6.00 | 7.03 |
| XLR Input | Yes | No |
| RCA Input | Yes | No |
| TRS Input | Yes | No |
| Optical Input | No | Yes |
| Coaxial Input | No | No |
| USB Input | No | Yes |
| HDMI Input | No | Yes |
| AES Input | No | No |
| Aux Input | No | No |
| Outputs | - | RCA Subwoofer |
| Sensitivity | - | 84dB (measured at 0.3V/1m, Erin’s Audio Corner) |
| Subwoofer Output | - | Yes |
Related Speaker Comparisons
How KEF LSX II LT compares with other leading options:
- KEF LSX II LT vs Genelec 8331A
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- Genelec 8030C vs KEF LSX II LT
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- KEF LSX II LT vs Reflector Audio Square Two
Prices on this page were last checked October 3, 2026 at 10:26 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
Presonus Eris E5 XT: $239.98 per pair Discontinued eBay
Newer model: the PreSonus Eris Studio 5. It’s likely to perform similarly, though we don’t have measurements to confirm that yet.
Pros: ASR’s measurements show reasonably consistent directivity through the crossover, so EQ changes are more likely to benefit both direct and reflected sound. Bass reaches -3dB around 56Hz. A standalone preference score of 3.58 rises to 6.00 with an ideal subwoofer, indicating useful bass reach but only moderate native tonal performance. Measured bass extension of 56.4Hz (-3dB).
Cons: The response has bass and treble emphasis with a recessed crossover region; smooth directivity carries that imbalance into room reflections rather than fixing it. Existing distortion testing shows problems across a broad range when pushed to 96dB. Tone correction and moderate levels help, but it is not a reference-flat monitor out of the box. Discontinued.
Full Presonus Eris E5 XT review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 80w Per Speaker |
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 46.9Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 56.4Hz (measured, Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 10.2”H x 7”W x 7.7”D (259.1 x 177.8 x 195.6 mm) |
| Drivers | 5” (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 53Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | TRS, XLR, RCA |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 3.58 |
| Spinorama Preference Score with Perfect Sub | 6.00 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 10.1 lbs (4.6 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- DSAUDIO.review: New PreSonus E5 XT and Yamaha HS5 could not sound any more different! SOUND AND RESPONSE COMPARISON More from DSAUDIOreview →
- DSAUDIO.review: Bright and brighter. PreSonus E5 XT takes on Adam Audio T5V SOUND & FREQUENCY RESPONSE COMPARISON
- DSAUDIO.review: PreSonus Eris E5 XT vs PreSonus Eris E5 (new vs old) Sound & Frequency Response Comparison
- DSAUDIO.review: PreSonus E7 XT vs PreSonus E5 XT Sound & Frequency Response Comparison
- DSAUDIO.review: PreSonus Eris E8 XT vs PreSonus Eris E5 XT Sound & Frequency Response Comparison
- DSAUDIO.review: PreSonus E5 XT vs KRK Rokit 5 G4 Sound & Frequency Response Comparison
- Audio Science Review Measurements More from Audio Science Review →
- Audio Science Review Measurements (spinorama.org)
- Head-to-Head Comparisons
- Presonus Eris E5 XT vs Edifier S2000MKIII
- Presonus Eris E5 XT vs Edifier MR4.5
- Presonus Eris E5 XT vs Edifier MR4
- Presonus Eris E5 XT vs Palmer STUDIMON 5
- Presonus Eris E5 XT vs KRK Classic 5
- Presonus Eris E5 XT vs Adam Audio A4V
- Presonus Eris E5 XT vs Yamaha HS5
- Presonus Eris E5 XT vs M-Audio BX4 D3
- See all 55 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 →
- Jasper Tech: Best Bookshelf Speakers For TV & Gaming - 2025
- Jasper Tech: Best Powered Bookshelf Speakers for Every Budget - 2025
- Head-to-Head Comparisons