Short answer: the Radiant Acoustics Clarity 6.2. It ranks #28 of 222 bookshelf speakers by sound quality (rated 4.4/5) at $4,500 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 Radiant Acoustics Clarity 6.2 is the more accurate, deeper-bass option. A Purifi driver bookshelf speaker with an AMT tweeter, rigid cabinet, non-fatiguing sound, and precise, well focused imaging. Its measured preference score, a predictor of how neutral it sounds, is 5.97 against 4.86 for the Philharmonic BMR (v1). Its bass reaches about 55Hz before falling 3dB, against 62Hz for the Philharmonic BMR (v1). Watch for: Needs a fairly specific setup to sound its best: about 15-20° of toe-out (per the manufacturer’s own recommendation) and roughly 2 feet from the rear wall; pointed straight on-axis, the treble reads as noticeably elevated.
What the Philharmonic BMR (v1) does well: A large three way bookshelf speaker with a ribbon tweeter, flat response, broad coverage, and an unusually expansive midrange. Watch for: The measured 83dB sensitivity and roughly 4-ohm load demand meaningful external amplification.
Buy the Radiant Acoustics Clarity 6.2. It is rated higher for sound quality; the Philharmonic BMR (v1) is no longer sold new.
Looking for alternatives? See the complete Passive Home rankings.
A Purifi driver bookshelf speaker with an AMT tweeter, rigid cabinet, non-fatiguing sound, and precise, well focused imaging.
A large three way bookshelf speaker with a ribbon tweeter, flat response, broad coverage, and an unusually expansive midrange.
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
| Radiant Acoustics Clarity 6.2 | Philharmonic BMR (v1) | |
|---|---|---|
| Price | $4500 per pair | $2,395 per pair Discontinued |
| Ranked | #28 of 222 in Large Size Bookshelf Speakers | #40 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 32Hz (measured, Erin’s Audio Corner) | 37.8Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 55Hz (measured, Erin’s Audio Corner) | Approximately 62Hz relative to mean (measured, Erin’s Audio Corner website) |
| Dimensions | 14.3”H x 8.7”W x 10.5”D (363.2 x 221 x 266.7 mm) | 22H x 9W x 13.5D in |
| Impedance | 4 ohms nominal (2.1 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | Approximately 4 ohms nominal (measured, Erin’s Audio Corner) |
| Sensitivity | 84.3dB (measured, Erin’s Audio Corner) | Approximately 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 6.5” PURIFI USHINDI woofer, Custom AMT (Air Motion Transformer) tweeter | RAAL 64-10 ribbon; 2.5” BMR midrange; 7” Scan-Speak woofer |
| Weight | 23.8 lbs (10.8 kg) each | 37.9 lbs (17.2 kg) each |
| Woofer Cabinet | passive radiator | ported |
| Spinorama Preference Score | 5.97 | 4.86 |
| Spinorama Preference Score with Perfect Sub | 7.75 | 7.17 |
| DIY Kit | No | No |
| Port Tuning | - | Mid/low-30Hz range (measured, Erin’s Audio Corner) |
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