Short answer: the Rythmik LV12. It ranks #8 of 212 subwoofers by sound quality, rated 4.2/5, at $899; the Sonos Sub 4 ranks #10, rated 3.7/5, at $899. With prices this close, go by the sound-quality ranking rather than the cost.
What the Sonos Sub 4 does well: A wireless subwoofer for Sonos soundbars and speakers, with force-cancelling drivers and setup from the Sonos app, placed near any outlet. Watch for: No independent measurements yet, so its output can’t be compared with ranked subwoofers.
What the Rythmik LV12 does well: A great value 12 inch servo controlled subwoofer with deep bass and switchable tuning for depth or loudness. The catch: At 495 by 381 by 470mm and 69 lbs (31.3 kg) it is a large, heavy cabinet for a 12 inch subwoofer.
Buy the Rythmik LV12. It is rated higher for sound quality than the Sonos Sub 4 at the same price, which makes it the one to get unless you need something the other one does better.
About the ratings: the Sonos Sub 4’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 3.5 to 3.9, so this verdict could change once it is measured.
Want more options? Browse the full Subwoofers rankings.
Prices on this page were last checked November 14, 2026 at 6:17 PM 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.
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Specifications Side By Side
| Sonos Sub 4 | Rythmik LV12 | |
|---|---|---|
| Price | $899.00 | $899 |
| Ranked | #10 of 73 in Small Home Subwoofers (Under 30 lbs) Estimated | #8 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Weight | 26 lbs (11.79 kg) | 69 lbs (31.3 kg) |
| Dimensions | 15.3”H x 15.8”W x 6.2”D (389 x 402 x 158 mm) | 19.5”H x 15”W x 18.5”D (495.3 x 381.0 x 469.9 mm) |
| Warranty | 1 | 5/3 |
| Enclosure | ported, force-cancelling | ported, front |
| Drivers | 2x force-cancelling drivers | 12” (305mm) driver |
| Frequency Response | 25Hz extension (manufacturer specified) | 19Hz-300Hz |
| Cabinet Color | black, white | black |
| Country | United States | United States |
| Output SPL at 20 Hz | - | 107.7 dB |
| Output SPL at 25 Hz | - | 113.2 dB |
| Output SPL at 31.5 Hz | - | 116.6 dB |
| Output SPL at 40 Hz | - | 120.2 dB |
| Output SPL at 50 Hz | - | 120.4 dB |
| Output SPL at 63 Hz | - | 121.2 dB |
| Output SPL at 80 Hz | - | 119.3 dB |
| CEA-2010-A Average (40-80Hz) | - | 120.3 dB |
| Measurement Source | - | Brent Butterworth |
| Amplifier Power | - | 300W RMS |
| Output SPL at 16 Hz | - | 101.0 dB |
Where the Ratings Come From
- Sonos Sub 4: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- Rythmik LV12: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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