Short answer: the Ascend Acoustics CMT-340 SE2. It ranks #24 of 222 bookshelf speakers by sound quality, rated 4.4/5, at $798. The Emotiva Airmotiv XB2 ranks #48, rated 4.2/5, at $549, $249 cheaper, which does not close the gap in sound quality.
The Emotiva Airmotiv XB2 is the deeper-bass pick. A great value bookshelf speaker with neutral sound, an AMT ribbon tweeter, and decent bass for its size. Its bass reaches about 62Hz before falling 3dB, against 77.6Hz for the Ascend Acoustics CMT-340 SE2. The tradeoff: Slight recessed upper-midrange around 2kHz from the tweeter-to-woofer handoff.
What the Ascend Acoustics CMT-340 SE2 does well: 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 catch: 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.
Buy the Ascend Acoustics CMT-340 SE2. It is rated higher for sound quality, and the $249 saving on the Emotiva Airmotiv XB2 is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
A great value bookshelf speaker with neutral sound, an AMT ribbon tweeter, and decent bass for its size.
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.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Emotiva Airmotiv XB2 | Ascend Acoustics CMT-340 SE2 | |
|---|---|---|
| Price | $549 per pair | $798 per pair |
| Ranked | #48 of 222 in Large Size Bookshelf Speakers | #24 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | approximately 53Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 62Hz (measured, Erin’s Audio Corner) | 77.6Hz (measured, spinorama.org) |
| Dimensions | 12.8” x 8.5” x 11.5” (325 x 216 x 292 mm) | 21 x 7.5 x 10.5 in each |
| Impedance | 4 ohms nominal (safe with 8-ohm rated amps) | 8 ohms nominal |
| Sensitivity | 86dB (2.83V/1m, Manufacturer specified) | 92dB at 2.83V/1m anechoic |
| Drivers | 1x 6” woven cone woofer, 1x 25x32mm AMT folded ribbon tweeter | Two 6.5-inch woofers; 27mm soft-dome tweeter |
| Weight | 18.1 lbs (8.2 kg) | 29.1 lbs (13.2 kg) each |
| Woofer Cabinet | Bass reflex, rear ported | - |
| Frequency Response | 48Hz - 27kHz (+3/-3dB, Manufacturer specified) | - |
| Crossover Frequency | 2.6kHz | - |
| Power Handling | 125W continuous, 200W peak | 240W continuous; 400W short-term peak |
| Spinorama Preference Score | 5.65 | 5.33 |
| Spinorama Preference Score with Perfect Sub | 7.93 | 7.99 |
| DIY Kit | No | No |
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