Short answer: the Dynaudio Special Forty. It ranks #88 of 134 bookshelf speakers by sound quality (rated 3.5/5) at $3,600 and is still sold new; the Revel Performa M22 ranks #98 (rated 3.3/5) and is discontinued, so it is only an option used.
Buy the Dynaudio Special Forty. It is rated higher for sound quality; the Revel Performa M22 is no longer sold new.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Dynaudio Special Forty | Revel Performa M22 | |
|---|---|---|
| Price | $3600 per pair | $600 per pair used (about), Discontinued |
| Ranked | #88 of 134 in Large Size Bookshelf Speakers | #98 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) | 37.1Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) | 46.9Hz (measured, Audio Science Review) |
| Dimensions | 14.1”H x 7.7”W x 12.1”D (358.1 x 195.6 x 307.3 mm) | 14.5”H x 8.6”W x 11.9”D (368.3 x 219.1 x 301.6 mm) |
| Impedance | 6 ohms nominal (4.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 83.5dB (measured, Erin’s Audio Corner; 86dB manufacturer specified) | 85dB |
| Drivers | 5.9” MSP (Magnesium Silicate Polymer) cone woofer, 1” Esotar soft dome tweeter | 25mm tweeter + 200mm woofer |
| Weight | 17.9 lbs (8.1 kg) each | 41.7 lbs (18.9 kg) |
| Woofer Cabinet | ported | ported, rear |
| Spinorama Preference Score | 4.73 | 5.31 |
| Spinorama Preference Score with Perfect Sub | 6.74 | 7.26 |
| DIY Kit | No | No |
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The Two Speakers In Full
Dynaudio Special Forty: $3600 per pair Safe and Sound HQ eBay
Pros: Smooth, “buttery” overall tonal character consistent with Dynaudio’s house sound. Surprisingly precise, focused imaging despite wide horizontal radiation (about ±70°): atypical, since wide-radiating speakers usually sacrifice some image precision in reflective rooms. Strong output capability: reached 100-101dB average at 3.5 meters with no audible distortion or woofer distress, and compression testing at 102dB shows the cabinet holding up mechanically well at extreme output. Bass reaches a genuine 50Hz (potentially 40Hz) in most rooms from a rear-ported design. Distortion stays below 1% at 86dB and doesn’t cross 3% THD until about 50Hz even at 96dB. Extra weight and impact on snares and percussion around 700-800Hz that the reviewer found appealing on many tracks. Measured bass extension of 54Hz (-3dB), with a measured sensitivity of 83.5dB.
Cons: A glaring, sometimes sibilant quality around 3-4kHz was the most noticeable issue in listening, the one thing the reviewer would want notched out with EQ. Multiple enclosure resonances appear between 500Hz-1kHz across on-axis, listening window, early-reflections, and sound-power measurements, corroborated by independent third-party CSD data showing similar 500-800Hz cabinet resonances. A dip around 1.2kHz traces to a cone-edge-to-surround compliance mismatch in the driver itself (confirmed by testing the bare driver’s impedance): a known artifact common to many similarly-sized drivers across several manufacturers, contributing to elevated second-order distortion in that region. A somewhat laid-back, recessed 1-2kHz character (sometimes described as a “BBC dip”) gives an overall subdued quality that isn’t overtly problematic but shapes the tonal balance. Impedance drops below 3 ohms in the 100-200Hz region, requiring a genuinely 4-ohm-stable amplifier rather than an AVR. Rear port means it can’t be placed directly against a wall.
Full Dynaudio Special Forty review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 54Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.1”H x 7.7”W x 12.1”D (358.1 x 195.6 x 307.3 mm) |
| Drivers | 5.9” MSP (Magnesium Silicate Polymer) cone woofer, 1” Esotar soft dome tweeter |
| Impedance | 6 ohms nominal (4.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 83.5dB (measured, Erin’s Audio Corner; 86dB manufacturer specified) |
| Spinorama Preference Score | 4.73 |
| Spinorama Preference Score with Perfect Sub | 6.74 |
| Weight | 17.9 lbs (8.1 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
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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 |
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