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 #63 (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. High-quality manufacturer Klippel NFS data shows 0.295dB on-axis average absolute deviation, 0.531 listening-window smoothness, and a strong 7.99 preference score with a subwoofer. 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. CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz. 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.
High-quality manufacturer Klippel NFS data shows 0.295dB on-axis average absolute deviation, 0.531 listening-window smoothness, and a strong 7.99 preference score with a subwoofer.
Ascend Acoustics $798 eBay
CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz.
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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 | #63 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 |
Frequency Response Compared
Both speakers’ spinorama measurements, overlaid. A flatter line is more neutral: peaks sound forward or harsh, dips sound recessed. Each curve is shifted so its average from 300 Hz to 3 kHz sits at 0 dB, so loudness differences between the two are removed and only the shape is compared. The two were measured by different sources, so small differences, especially in the bass, can come from the measurement setup rather than the speakers.
Measurement data: Ascend Acoustics CMT-340 SE2 (measured by the manufacturer) and Revel Concerta2 M16 (measured by Audio Science Review), via spinorama.org.
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