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 ELAC Uni-Fi Reference UBR62 ranks #65, rated 4.1/5, and costs $1,299, which makes this an easy call rather than a real tradeoff.
The Ascend Acoustics CMT-340 SE2 is the better-sounding choice. 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. Watch for: 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 ELAC Uni-Fi Reference UBR62 is the deeper-bass option. A three way bookshelf speaker with a coaxial tweeter and midrange for stable imaging, well controlled tonality, and front ports for easy placement. Its bass reaches about 58.6Hz before falling 3dB, against 77.6Hz for the Ascend Acoustics CMT-340 SE2. The tradeoff: Erin measured very low 83dB/2.83V/1m sensitivity; his 110W Parasound was insufficient for the high-level test and the more powerful HINT 6 was needed.
Buy the Ascend Acoustics CMT-340 SE2. It is rated higher for sound quality than the ELAC Uni-Fi Reference UBR62 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Passive Home rankings cover every ranked option.
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Specifications Side By Side
| Ascend Acoustics CMT-340 SE2 | ELAC Uni-Fi Reference UBR62 | |
|---|---|---|
| Price | $798 per pair | $1,299.00 per pair |
| Ranked | #24 of 222 in Large Size Bookshelf Speakers | #65 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | 77.6Hz (measured, spinorama.org) | 58.6Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | approximately 53Hz (measured, spinorama.org) | 41.9Hz (measured, Erin’s Audio Corner) |
| Drivers | Two 6.5-inch woofers; 27mm soft-dome tweeter | 1” tweeter coaxial with 4” midrange; 6.5” woofer |
| Sensitivity | 92dB at 2.83V/1m anechoic | 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) |
| Power Handling | 240W continuous; 400W short-term peak | - |
| Dimensions | 21 x 7.5 x 10.5 in each | 14.1”H x 8.2”W x 13.1”D |
| Weight | 29.1 lbs (13.2 kg) each | 23.5 lbs (10.68 kg) each |
| Spinorama Preference Score | 5.33 | 5.44 (measured, spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.99 | 7.7 (measured, spinorama.org) |
| DIY Kit | No | No |
| Bass Extension | - | 41Hz manufacturer specified; Erin’s response-linearity graph shows limited high-output bass headroom |
| Woofer Cabinet | - | ported, dual front slot vents |
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