The Dayton Audio MKSX4 ranks #1 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.
#1 Dayton Audio MKSX4: $144.98 Amazon
Pros: Four 4-inch drivers in a low-profile (under 8-inch) cabinet deliver 106.2dB CEA-2010-A average, the best output-per-dollar of any passive subwoofer tested.
Cons: Budget-tier output at 106.2 dB, four small 4-inch drivers, ported room dependency, and $145 price point.
Notes: low profile (<8in)
How it compares: Just below it: BG Radia BGX-S6B - $44 more, 4.1dB less max output.
| CEA-2010-A Average (40-80Hz) | 106.2 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 16.0"H x 5.9"W x 14.0"D (406.4 x 149.9 x 355.6 mm) |
| Driver | 4" (102mm) driver |
| Driver(s) | (4) 4 inch |
| Enclosure | ported, rear |
| Measurement Source | Brent Butterworth |
| Output SPL at 31.5 Hz | 78.7 dB |
| Output SPL at 40 Hz | 95.4 dB |
| Output SPL at 50 Hz | 106.8 dB |
| Output SPL at 63 Hz | 110.3 dB |
| Output SPL at 80 Hz | 112.3 dB |
| Passive | Yes |
| Warranty | 5 |
| Weight | 26.9 lbs / 12.2 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.