Short answer: the ELAC Uni-Fi Reference UBR62. It ranks #65 of 222 bookshelf speakers by sound quality (rated 4.1/5) at $1,299 and is still sold new; the SVS Ultra Bookshelf ranks #98 (rated 3.9/5) and is discontinued, so it is only an option used. The SVS Ultra Bookshelf’s replacement, the SVS Ultra Evolution Bookshelf, is rated 4.0/5 at $1,199.
The ELAC Uni-Fi Reference UBR62 is the deeper-bass pick. 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 69Hz for the SVS Ultra Bookshelf. Watch for: 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.
What the SVS Ultra Bookshelf does well: Bookshelf speakers with fairly neutral sound, wide dispersion and good dynamics, now discontinued but worth buying used. The catch: Still has a boosted upper mid-range/mid-range area, though less severe than the Prime: the reviewer suspects a baffle-step or tweeter-level issue rather than a resonance, giving mixes a slightly forward, occasionally tinny character.
Buy the ELAC Uni-Fi Reference UBR62. It is rated higher for sound quality and still sold new, while the SVS Ultra Bookshelf is discontinued.
Still deciding? The full Passive Home rankings cover every ranked option.
Measured Differences
- Efficiency: the SVS Ultra Bookshelf is rated at 87.8 dB sensitivity against 83 dB for the ELAC Uni-Fi Reference UBR62, so it plays as loud with roughly half the amplifier power.
- Close enough not to matter: bass extension (41.9 Hz vs 48 Hz, 10 dB down).
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Specifications Side By Side
| ELAC Uni-Fi Reference UBR62 | SVS Ultra Bookshelf | |
|---|---|---|
| Price | $1,299.00 per pair | $1,200 per pair Discontinued |
| Ranked | #65 of 222 in Large Size Bookshelf Speakers | #98 of 222 in Large Size Bookshelf Speakers |
| Bass Extension | 41Hz manufacturer specified; Erin’s response-linearity graph shows limited high-output bass headroom | - |
| Bass Extension (-3dB) | 58.6Hz (measured, Erin’s Audio Corner) | 69Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 41.9Hz (measured, Erin’s Audio Corner) | 48Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 83dB/2.83V/1m (measured, Erin’s Audio Corner) | 87.8dB (measured average, Erin’s Audio Corner) |
| Impedance | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) | 8 ohms nominal, 3.8 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | 1” tweeter coaxial with 4” midrange; 6.5” woofer | 6.5” composite glass fiber cone woofer, 1” aluminum dome tweeter |
| Dimensions | 14.1”H x 8.2”W x 13.1”D | 14.9”H x 8.5”W x 10”D |
| Woofer Cabinet | ported, dual front slot vents | - |
| Weight | 23.5 lbs (10.68 kg) each | 19 lbs (8.6 kg) each |
| Spinorama Preference Score | 5.44 (measured, spinorama.org) | 5.63 |
| Spinorama Preference Score with Perfect Sub | 7.7 (measured, spinorama.org) | 8.10 |
| DIY Kit | No | No |
| Frequency Response | - | 45Hz - 32kHz (manufacturer specified) |
| Recommended Power | - | 20-150W |
Where the Ratings Come From
- ELAC Uni-Fi Reference UBR62: Spinorama.org measurements and reviews by Erin’s Audio Corner.
- SVS Ultra Bookshelf: Spinorama.org measurements and reviews by Erin’s Audio Corner and Audio Science Review.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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