Short answer: the Ascend Acoustics CMT-340 SE2. It ranks #24 of 222 bookshelf speakers by sound quality (rated 4.4/5) at $798 and is still sold new; the Revel Concerta2 M16 ranks #62 (rated 4.1/5) and is discontinued, so it is only an option used.
The Ascend Acoustics CMT-340 SE2 is the better-sounding pick. A dual woofer bookshelf speaker with accurate sound, high sensitivity, and lots of clean output, a superb partner for a subwoofer at a modest price. The tradeoff: Bass rolls off early for the cabinet size, measuring 77.6Hz at -3dB, 64.5Hz at -6dB, and 48.3Hz at -12dB; the preference score without a subwoofer is only 5.33.
The Revel Concerta2 M16 is the deeper-bass option. An affordable bookshelf speaker with essentially flat mids, a pleasing in-room balance with extra bass, and low distortion. Its bass reaches about 60.1Hz before falling 3dB, against 77.6Hz for the Ascend Acoustics CMT-340 SE2. Watch for: Harmonic distortion shows a notable peak around 80Hz and a sharp spike around 350Hz, plus the woofer appears to get a bit unhappy right before handing off to the tweeter.
Buy the Ascend Acoustics CMT-340 SE2. It is rated higher for sound quality and still sold new, while the Revel Concerta2 M16 is discontinued.
Still deciding? The full Passive Home rankings cover every ranked option.
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Specifications Side By Side
| Ascend Acoustics CMT-340 SE2 | Revel Concerta2 M16 | |
|---|---|---|
| Price | $798 per pair | $600 per pair used (about), Discontinued |
| Ranked | #24 of 222 in Large Size Bookshelf Speakers | #62 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 77.6Hz (measured, spinorama.org) | 60.1Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | approximately 53Hz (measured, spinorama.org) | 41.6Hz (measured, Audio Science Review) |
| Drivers | Two 6.5-inch woofers; 27mm soft-dome tweeter | 25mm tweeter + 165mm woofer |
| Sensitivity | 92dB at 2.83V/1m anechoic | 86dB |
| Impedance | 8 ohms nominal | 6 ohms |
| Power Handling | 240W continuous; 400W short-term peak | - |
| Dimensions | 21 x 7.5 x 10.5 in each | 14.8”H x 8.6”W x 10.8”D (374.7 x 218.4 x 273.3 mm) |
| Weight | 29.1 lbs (13.2 kg) each | 32 lbs (14.5 kg) |
| Spinorama Preference Score | 5.33 | 5.06 |
| Spinorama Preference Score with Perfect Sub | 7.99 | 7.28 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
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