OSD (Optimal Speaker Design) SS8 Review: Ranked #15 of 48

Last updated: September 13, 2026

The OSD (Optimal Speaker Design) SS8 ranks #15 out of 48 total Small Home Subwoofers (Under 30 lbs) for sound quality. See all Subwoofers rankings for every top pick.

Brand: OSD

Prices on this page were last checked September 14, 2026 at 1:47 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.

OSD (Optimal Speaker Design) SS8 - ranked #15 of 48 Small Home Subwoofers (Under 30 lbs) · Editor's rating 3.6/5

#15 OSD (Optimal Speaker Design) SS8: $249 Discontinued eBay

Pros: 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)

How it compares: Just above it: Dayton Audio MKSX4 - $104 cheaper, 1.2dB more max output. Just below it: Klipsch Flexus Sub 100 - $31 more, 1.9dB less max output.

CEA-2010-A Average (40-80Hz)111.0 dB
CountryUnited States
Dimensions15.7"H x 21.3"W x 5.5"D (400.0 x 539.8 x 139.7 mm)
DiscontinuedYes
Drivers8" (203mm) driver
Enclosureported, side
Measurement SourceBrent Butterworth
Output SPL at 20 Hz76.7 dB
Output SPL at 25 Hz86.6 dB
Output SPL at 31.5 Hz90.3 dB
Output SPL at 40 Hz103.6 dB
Output SPL at 50 Hz109.2 dB
Output SPL at 63 Hz115.6 dB
Output SPL at 80 Hz115.7 dB
Warranty2?
Weight11.5 lbs (5.2 kg)

More OSD speakers →