Short answer: the KEF R3. It ranks #15 of 222 bookshelf speakers by sound quality (rated 4.5/5) at $1,544.56 and is still sold new; the Philharmonic BMR (v1) ranks #40 (rated 4.3/5) and is discontinued, so it is only an option used. The Philharmonic BMR (v1)’s replacement, the Philharmonic BMR Monitor, is rated 3.6/5 at $2,200.
The KEF R3 is the more accurate pick. A three way bookshelf speaker with KEF’s coaxial driver for stable imaging across seats and very low distortion, easy to run with a modest amp. Its measured preference score, a predictor of how neutral it sounds, is 6.20 against 4.86 for the Philharmonic BMR (v1). Watch for: The low-frequency alignment rolls gradually rather than delivering high-output sub-bass; KEF specifies 58Hz +/-3dB and Erin’s high-level data supports using an 80Hz subwoofer crossover.
Why pick the Philharmonic BMR (v1): A large three way bookshelf speaker with a ribbon tweeter, flat response, broad coverage, and an unusually expansive midrange. The catch: The measured 83dB sensitivity and roughly 4-ohm load demand meaningful external amplification.
Buy the KEF R3. It is rated higher for sound quality; the Philharmonic BMR (v1) is no longer sold new.
Want more options? Browse the full Passive Home rankings.
A three way bookshelf speaker with KEF’s coaxial driver for stable imaging across seats and very low distortion, easy to run with a modest amp.
A large three way bookshelf speaker with a ribbon tweeter, flat response, broad coverage, and an unusually expansive midrange.
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Specifications Side By Side
| KEF R3 | Philharmonic BMR (v1) | |
|---|---|---|
| Price | $1,544.56 per pair | $2,395 per pair Discontinued |
| Ranked | #15 of 222 in Large Size Bookshelf Speakers | #40 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-3dB) | Approximately 58Hz (manufacturer specified; consistent with Erin’s measured roll-off) | Approximately 62Hz relative to mean (measured, Erin’s Audio Corner website) |
| Bass Extension (-10dB) | 35.2Hz (measured, Audio Science Review) | 37.8Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 86-87dB/2.83V/1m (measured, Erin’s Audio Corner) | Approximately 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal; suitable for Erin’s 4/8-ohm-rated amplifier | Approximately 4 ohms nominal (measured, Erin’s Audio Corner) |
| Drivers | 1” tweeter coaxial with 5” midrange; 6.5” woofer | RAAL 64-10 ribbon; 2.5” BMR midrange; 7” Scan-Speak woofer |
| Dimensions | 16.6”H x 7.9”W x 13.2”D | 22H x 9W x 13.5D in |
| Woofer Cabinet | ported, rear Flexible Port | ported |
| Weight | 29.9 lbs (13.55 kg) each | 37.9 lbs (17.2 kg) each |
| Spinorama Preference Score | 6.2 (spinorama.org) | 4.86 |
| Spinorama Preference Score with Perfect Sub | 7.97 (spinorama.org) | 7.17 |
| DIY Kit | No | No |
| Port Tuning | - | Mid/low-30Hz range (measured, Erin’s Audio Corner) |
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