Short answer: the Ascend Acoustics CMT-340 SE2. It ranks #24 of 222 bookshelf speakers by sound quality (rated 4.4/5); the Mission LX-3 MKII ranks #138 (rated 3.6/5).
The Ascend Acoustics CMT-340 SE2 is the more accurate 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. Its measured preference score, a predictor of how neutral it sounds, is 5.33 against 4.17 for the Mission LX-3 MKII. 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.
The Mission LX-3 MKII is the deeper-bass option. Large affordable standmount speakers with a 6.5 inch woofer, useful bass and easy to drive sensitivity. Its bass reaches about 67.4Hz before falling 3dB, against 77.6Hz for the Ascend Acoustics CMT-340 SE2. The tradeoff: On-axis smoothness of 0.217 and predicted in-room smoothness of 0.344 reveal clear response unevenness, with a -0.46dB-per-octave downward tilt.
Buy the Ascend Acoustics CMT-340 SE2. It is rated higher for sound quality than the Mission LX-3 MKII.
Looking for alternatives? See the complete Passive Home rankings.
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.
Large affordable standmount speakers with a 6.5 inch woofer, useful bass and easy to drive sensitivity.
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
| Ascend Acoustics CMT-340 SE2 | Mission LX-3 MKII | |
|---|---|---|
| Price | $798 per pair | £249 per pair |
| Ranked | #24 of 222 in Large Size Bookshelf Speakers | #138 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 77.6Hz (measured, spinorama.org) | 67.4Hz (measured, ASR via spinorama.org) |
| Bass Extension (-10dB) | approximately 53Hz (measured, spinorama.org) | 42.5Hz (derived from ASR on-axis curve, spinorama.org) |
| Drivers | Two 6.5-inch woofers; 27mm soft-dome tweeter | 1” microfiber-dome tweeter, 6.5” composite-fiber woofer |
| Sensitivity | 92dB at 2.83V/1m anechoic | 88dB |
| Impedance | 8 ohms nominal | 8 ohms nominal, 4.1 ohms minimum |
| Power Handling | 240W continuous; 400W short-term peak | - |
| Dimensions | 21 x 7.5 x 10.5 in each | 13.6H x 8.9W x 12.1D in |
| Weight | 29.1 lbs (13.2 kg) each | 18.5 lbs (8.4 kg) each |
| Spinorama Preference Score | 5.33 | 4.17 |
| Spinorama Preference Score with Perfect Sub | 7.99 | 6.42 |
| DIY Kit | No | No |
| Enclosure | - | 2-way, bass-reflex |
| Country | - | United Kingdom (design) |
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