The OSD (Optimal Speaker Design) SS8 is rated 3.6/5 for sound quality, #20 of 73 Small Home Subwoofers (Under 30 lbs). See all Subwoofers rankings for every top pick.

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Brand: OSD
#20 OSD (Optimal Speaker Design) SS8: $249 Discontinued eBay
Pros: A discontinued slim, lightweight 8 inch subwoofer only 14 cm deep, made to fit flat against a wall in a modest room. Independent CEA-2010 testing records 76.7 dB at 20 Hz and 111.0 dB through 40-80 Hz. The ported, side enclosure with 8” (203mm) driver is best suited to upper-bass support in a modest room.
Cons: Deep-bass output is limited relative to its midbass result, so it is not the right choice for the lowest movie effects. The 400.0H x 539.8W x 139.7D mm cabinet and 5.2 kg mass still need deliberate placement and calibration. Discontinued.
Notes: low profile (<8in)
| CEA-2010-A Average (40-80Hz) | 111.0 dB |
|---|---|
| Country | United States |
| Dimensions | 15.7”H x 21.3”W x 5.5”D (400.0 x 539.8 x 139.7 mm) |
| Drivers | 8” (203mm) driver |
| Enclosure | ported, side |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 76.7 dB |
| Output SPL at 25 Hz | 86.6 dB |
| Output SPL at 31.5 Hz | 90.3 dB |
| Output SPL at 40 Hz | 103.6 dB |
| Output SPL at 50 Hz | 109.2 dB |
| Output SPL at 63 Hz | 115.6 dB |
| Output SPL at 80 Hz | 115.7 dB |
| Warranty | 2? |
| Weight | 11.5 lbs (5.2 kg) |
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.