Short answer: the Revel M16, which is far easier to drive. The ELAC Uni-Fi Reference UBR62 is a true three-way stand-mount with a concentric 1-inch tweeter and 4-inch midrange plus a 6.5-inch woofer, but Erin measured very low 83dB/2.83V/1m sensitivity and found his 110W Parasound insufficient for the high-level test. The M16 is essentially flat on-axis from 200Hz to 10kHz, though its distortion peaks around 80Hz and 350Hz.
Buy the ELAC Uni-Fi Reference UBR62 new; the Revel Concerta2 M16 is no longer sold new, so it only makes sense as a used find.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Revel Concerta2 M16 | ELAC Uni-Fi Reference UBR62 | |
|---|---|---|
| Price | $600 per pair used (about), Discontinued | $1,199 per pair |
| Ranked | #51 of 134 in Large Size Bookshelf Speakers | #54 of 134 in Large Size Bookshelf Speakers |
| Drivers | 25mm tweeter + 165mm woofer | 1” tweeter coaxial with 4” midrange; 6.5” woofer |
| Weight | 32 lbs (14.5 kg) | 23.5 lbs (10.68 kg) each |
| Sensitivity | 86dB | 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Impedance | 6 ohms | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) |
| Dimensions | 14.8”H x 8.6”W x 10.8”D (374.7 x 218.4 x 273.3 mm) | 14.1”H x 8.2”W x 13.1”D |
| Woofer Cabinet | ported, rear | ported, dual front slot vents |
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) | 58.6Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 41.6Hz (measured, Audio Science Review) | 41.9Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.06 | 5.44 (measured, spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.28 | 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 |
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The Two Speakers In Full
Revel Concerta2 M16: $600 per pair used (about) Discontinued eBay
Pros: CEA2034 spinorama shows an on-axis response that’s essentially flat from 200Hz to 10kHz, with some bass boost around 100Hz. Predicted in-room response is very nice, with just extra bass and a bit of roll-off above 20kHz: the reviewer calls it “nice!” Distortion is well controlled through most of the range at both test levels. Measured bass extension of 60.1Hz (-3dB).
Cons: 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. Cumulative spectral decay (waterfall) shows some lingering resonances in the 300Hz-1kHz region. The reviewer cautions not to over-cover the cabinet/grille area with thin fabric, as it can audibly affect the top-end response. Discontinued.
Full Revel Concerta2 M16 review and specifications →
| Bass Extension (-10dB) | 41.6Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 60.1Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 14.8”H x 8.6”W x 10.8”D (374.7 x 218.4 x 273.3 mm) |
| Drivers | 25mm tweeter + 165mm woofer |
| Impedance | 6 ohms |
| Sensitivity | 86dB |
| Spinorama Preference Score | 5.06 |
| Spinorama Preference Score with Perfect Sub | 7.28 |
| Weight | 32 lbs (14.5 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Revel Concerta2 M16 vs JBL HDI-1600
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ELAC Uni-Fi Reference UBR62: $1,199 per pair Amazon eBay
Pros: True three-way stand-mount using a 1-inch tweeter concentrically mounted in a 4-inch aluminum midrange plus a dedicated 6.5-inch aluminum woofer. Erin found the directivity and overall tonality well controlled, with dual front slot vents minimizing placement sensitivity and cabinet bracing suppressing obvious coloration. The mostly 5-ohm-or-higher load is manageable for a genuinely 4-ohm-capable amplifier, and the coherent concentric upper range supports stable imaging across seats. Measured bass extension of 58.6Hz (-3dB), with a measured sensitivity of 83dB.
Cons: 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. Impedance reaches 4 ohms near 50Hz (Erin), while woofer excursion and bass output were less capable than expected for the cabinet size. A broad 500-700Hz rise and associated lower/female-vocal coloration were audible, and the slightly subdued listening-window treble is necessary to avoid an overly bright in-room balance rather than evidence of ruler-flat axial tuning.
Full ELAC Uni-Fi Reference UBR62 review and specifications →
| Bass Extension | 41Hz manufacturer specified; Erin’s response-linearity graph shows limited high-output bass headroom |
|---|---|
| Bass Extension (-10dB) | 41.9Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 58.6Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.1”H x 8.2”W x 13.1”D |
| Drivers | 1” tweeter coaxial with 4” midrange; 6.5” woofer |
| Impedance | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.44 (measured, spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.7 (measured, spinorama.org) |
| Weight | 23.5 lbs (10.68 kg) each |
| Woofer Cabinet | ported, dual front slot vents |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- ELAC Uni-Fi Reference UBR62 vs Power Sound Audio MT-110-M
- ELAC Uni-Fi Reference UBR62 vs ELAC DBR62
- ELAC Uni-Fi Reference UBR62 vs Yamaha NS-800A
- ELAC Uni-Fi Reference UBR62 vs Definitive Technology Demand D11
- ELAC Uni-Fi Reference UBR62 vs Technics SB-C700
- ELAC Uni-Fi Reference UBR62 vs Dynaudio Contour 20i
- ELAC Uni-Fi Reference UBR62 vs JBL HDI-1600
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