Short answer: the Revel Performa M22 for a cleaner response, the KEF Q350 for directivity. The Q350’s coaxial Uni-Q driver gives it excellent directivity and a reasonably flat on-axis response, but two resonances at 700Hz and 1.2kHz show up on-axis alongside an upper-bass boost. The M22 is very flat from 200Hz to 10kHz, with just a 3dB bass boost around 100Hz to account for.
Buy the Revel Performa M22 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Ascend Acoustics CMT-340 SE2 instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Revel Performa M22 | KEF Q350 | |
|---|---|---|
| Price | $600 per pair used (about), Discontinued | $699.00 per pair Discontinued |
| Ranked | #98 of 134 in Large Size Bookshelf Speakers | #109 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 38Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 46.9Hz (measured, Audio Science Review) | 70Hz (measured, Audio Science Review) |
| Impedance | 4 ohms | 4 ohms |
| Sensitivity | 85dB | 86dB (measured, Audio Science Review) |
| Drivers | 25mm tweeter + 200mm woofer | 25mm tweeter + 165mm woofer |
| Weight | 41.7 lbs (18.9 kg) | 29.5 lbs (13.4 kg) |
| Dimensions | 14.5”H x 8.6”W x 11.9”D (368.3 x 219.1 x 301.6 mm) | 14.1”H x 8.3”W x 12”D (358.0 x 210.0 x 306.0 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 5.31 | 5.25 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.26 | 7.12 (spinorama.org) |
| DIY Kit | No | No |
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The Two Speakers In Full
Revel Performa M22: $600 per pair used (about) Discontinued eBay
Pros: Very flat frequency response from 200Hz to 10kHz. Distortion is well controlled through most of the range, with only a modest crossover-region bump around 2-4kHz. Measured bass extension of 46.9Hz (-3dB).
Cons: 3dB bass boost around 100Hz. On-axis response also droops below 150Hz and peaks above 4kHz, which the reviewer thought may sound a bit bright/light. Distortion rises substantially below 100Hz when driven hard. Discontinued.
Full Revel Performa M22 review and specifications →
| Bass Extension (-10dB) | 37.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 46.9Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 14.5”H x 8.6”W x 11.9”D (368.3 x 219.1 x 301.6 mm) |
| Drivers | 25mm tweeter + 200mm woofer |
| Impedance | 4 ohms |
| Sensitivity | 85dB |
| Spinorama Preference Score | 5.31 |
| Spinorama Preference Score with Perfect Sub | 7.26 |
| Weight | 41.7 lbs (18.9 kg) |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
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KEF Q350: $699.00 per pair Discontinued Amazon eBay
Newer model: the KEF Q3 Meta, ranked higher, rated 3.4/5.
Pros: CEA2034 spinorama shows a reasonably flat on-axis response with excellent directivity, aided by the coaxial Uni-Q driver. Vertical directivity is better than most non-coaxial two-way speakers, another benefit of the concentric design. Measured bass extension of 70Hz (-3dB), with a measured sensitivity of 86dB.
Cons: Two resonances at 700Hz and 1.2kHz show up on-axis, alongside an upper-bass boost. Predicted in-room response looks a bit boomy as a result. Distortion climbs substantially in the 100Hz-1kHz range at 96dB SPL/1m, with a distinct resonance-driven peak around 900Hz-1kHz at both test levels. Discontinued.
Full KEF Q350 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 70Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 14.1”H x 8.3”W x 12”D (358.0 x 210.0 x 306.0 mm) |
| Drivers | 25mm tweeter + 165mm woofer |
| Impedance | 4 ohms |
| Sensitivity | 86dB (measured, Audio Science Review) |
| Spinorama Preference Score | 5.25 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.12 (spinorama.org) |
| Weight | 29.5 lbs (13.4 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons