The BK Electronics Monolith-DF ranks #107 out of 110 total Large Home Subwoofers (Over 75 lbs) for sound quality. See all Subwoofers rankings for every top pick.
Brand: BK Electronics
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.
#107 BK Electronics Monolith-DF: $8995 eBay
Pros: Independent CEA-2010 testing records 102.0 dB at 20 Hz and 108.4 dB through 40-80 Hz. The ported, bottom enclosure with 12” (305mm) driver with ported design delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 603.8H x 539.8W x 419.9D mm cabinet and 46.8 kg mass still require deliberate placement and calibration.
How it compares: Just above it: BK Electronics Extreme - $3000 cheaper, 2.1dB more max output. Just below it: SVS SB13-Plus - $7596 cheaper.
| CEA-2010-A Average (40-80Hz) | 108.4 dB |
|---|---|
| Cabinet Color | black, wood |
| Country | United Kingdom |
| Dimensions | 23.8"H x 21.3"W x 16.5"D (603.8 x 539.8 x 419.9 mm) |
| Drivers | 12" (305mm) driver with ported design |
| Enclosure | ported, bottom |
| Measurement Source | Ilkka Rissanen |
| Output SPL at 15 Hz | 91.3 dB |
| Output SPL at 20 Hz | 102.0 dB |
| Output SPL at 25 Hz | 106.4 dB |
| Output SPL at 31.5 Hz | 108.3 dB |
| Output SPL at 40 Hz | 108.6 dB |
| Output SPL at 50 Hz | 108.7 dB |
| Output SPL at 63 Hz | 108.6 dB |
| Output SPL at 80 Hz | 107.7 dB |
| Warranty | 2 |
| Weight | 103.2 lbs (46.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Ilkka Rissanen; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons