The BG Radia BGX-S6B ranks #2 out of 2 total Small Passive Home Subwoofers (Under 30 lbs) for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
#2 BG Radia BGX-S6B: $189
Pros: Six 4-inch drivers in a low-profile in-wall panel deliver 102.1dB CEA-2010-A average, a flush-mount alternative for rooms where a cabinet subwoofer won’t fit.
Cons: In-wall installation required, limited 102.1 dB output, passive design, and compact 7.3 kg constraints. Discontinued.
Notes: low profile (<8in)
How it compares: Just above it: Dayton Audio MKSX4 - $44 cheaper, 4.1dB more max output.
| CEA-2010-A Average (40-80Hz) | 102.1 dB (avg of 3/4 bands) |
|---|---|
| Dimensions | 14.0"H x 14.0"W x 3.75"D (355.6 x 355.6 x 95.2 mm) |
| Discontinued | Yes |
| Driver | 6" (152mm) driver |
| Driver(s) | (6) 4 inch |
| Enclosure | in-wall |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 82.3 dB |
| Output SPL at 25 Hz | 82.3 dB |
| Output SPL at 31.5 Hz | 82.3 dB |
| Output SPL at 40 Hz | 102.1 dB |
| Output SPL at 50 Hz | 102.1 dB |
| Output SPL at 63 Hz | 102.1 dB |
| Passive | Yes |
| Weight | 16.1 lbs / 7.3 kg |
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Product prices and availability were last checked July 31, 2026 at 5:30 AM UTC 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.