The REL Acoustics R-528 is rated 3.7/5 for sound quality, #95 of 212 Medium Home Subwoofers (30-75 lbs). See all Subwoofers rankings for every top pick.
Prices on this page were last checked October 28, 2026 at 1:06 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
Brand: REL Acoustics
#95 REL Acoustics R-528: $1,999 Discontinued eBay
Newer model: the REL Acoustics S/850, ranked lower, estimated 3.7/5, released Sep 2025. See every REL S and Reference Series generation.
Pros: A compact 12 inch subwoofer with a passive radiator, a strong amp and premium finish, now discontinued. It pairs a 12 inch driver and a carbon fiber passive radiator with a 500W RMS Class D amplifier. It is rated to 21Hz at -6dB. Measured output averages 112.8dB from 40 to 80Hz.
Cons: It is expensive for its measured output, which is 112.8dB from 40 to 80Hz and only 92.7dB at 25Hz. Output falls off quickly in the deep bass, so low effects are limited. It weighs 26.3kg in a 445 by 394 by 437mm cabinet. It is discontinued, so it must be bought used, and a successor replaced it.
Is the REL Acoustics R-528 right for you?
Skip it if
- you need to move it often (26 kg each).
- you want to buy it new: it is discontinued.
| Released | 2010 (16 years ago) |
|---|---|
| Amplifier Power | 500W RMS |
| CEA-2010-A Average (40-80Hz) | 112.8 dB (avg of 3/4 bands) |
| Country | United Kingdom |
| Dimensions | 17.5”H x 15.5”W x 17.2”D (444.5 x 393.7 x 436.9 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | passive radiator |
| Frequency Response | 21Hz-6dB |
| Measurement Source | Brent Butterworth |
| Output SPL at 25 Hz | 92.7 dB |
| Output SPL at 31.5 Hz | 106.5 dB |
| Output SPL at 40 Hz | 111.0 dB |
| Output SPL at 50 Hz | 112.7 dB |
| Output SPL at 63 Hz | 114.6 dB |
| Warranty | 3 |
| Weight | 58 lbs (26.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.