Short answer: the Revel Performa M22 for flat response, the Emotiva Airmotiv B2+ for punch and efficiency. The M22 is very flat from 200Hz to 10kHz, with only a 3dB bass boost around 100Hz to note. The B2+ delivers a useful 86dB average sensitivity and strong midbass punch around 120Hz, but the replacement did not deliver the neutral upgrade Erin expected.
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 Emotiva Airmotiv XB2 instead.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Revel Performa M22 | Emotiva Airmotiv B2+ | |
|---|---|---|
| Price | $600 per pair used (about), Discontinued | $449 per pair Discontinued |
| Ranked | #98 of 134 in Large Size Bookshelf Speakers | #107 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 37.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 43Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 46.9Hz (measured, Audio Science Review) | 66Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 85dB | 86dB (measured average, Erin’s Audio Corner) |
| Drivers | 25mm tweeter + 200mm woofer | 6.5” woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Weight | 41.7 lbs (18.9 kg) | 15.7 lbs (7.1 kg) each |
| Dimensions | 14.5”H x 8.6”W x 11.9”D (368.3 x 219.1 x 301.6 mm) | 12.8”H x 8.5”W x 11.5”D (324 x 216 x 293 mm) |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 5.31 | 5.60 |
| Spinorama Preference Score with Perfect Sub | 7.26 | 7.96 |
| 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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Emotiva Airmotiv B2+: $449 per pair Discontinued eBay
Newer model: the Emotiva Airmotiv XB2, ranked higher, rated 4.2/5.
Pros: Erin measured a useful 86dB average sensitivity and strong midbass punch around 120Hz. The folded-ribbon tweeter provides very broad upper-treble radiation, and the speaker can create a spacious presentation when positioned carefully. Response and directivity remain reasonably orderly below the roughly 2kHz crossover region. The 6.5-inch woofer offers more output capability than compact 5-inch competitors, while F3/F10 of 66/43Hz leave adequate overlap for a conventional 80Hz subwoofer crossover. Horizontal directivity data makes the broad baffle-step trend amenable to partial EQ below the crossover. Measured bass extension of 66Hz (-3dB), with a measured sensitivity of 86dB.
Cons: The replacement B2+ did not deliver the neutral upgrade Erin expected. A baffle-step loss around 500Hz depresses the lower midrange while the AMT’s much wider radiation above crossover injects excess room energy, yielding a bright, forward balance and false impression of cymbal detail. The directivity discontinuity near 2kHz cannot be completely equalized. Erin measured F3 at 66Hz and F10 at 43Hz, so meaningful kick-drum fundamentals and low bass still need a subwoofer. Vertical listening tolerance is roughly +/-10 degrees, with best results between the top of the woofer and tweeter axes. Broad lateral treble energy may require careful toe-out and sidewall absorption. Despite a large cabinet, it offers limited deep-bass advantage and was not Erin’s hoped-for successor to the more linear B1+. Discontinued.
Full Emotiva Airmotiv B2+ review and specifications →
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 66Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 12.8”H x 8.5”W x 11.5”D (324 x 216 x 293 mm) |
| Drivers | 6.5” woven-fiber woofer, 32 x 25mm folded-ribbon tweeter |
| Impedance | 4 ohms nominal (manufacturer specified) |
| Sensitivity | 86dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.60 |
| Spinorama Preference Score with Perfect Sub | 7.96 |
| Weight | 15.7 lbs (7.1 kg) each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
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