Short answer: the Rythmik FV15HP. It ranks #55 of 143 subwoofers by sound quality, rated 4.2/5, at $2,127. The RSL (Rogersound Labs) Speedwoofer 12S ranks #131, rated 3.7/5, at $884.96, $1,242.04 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Rythmik FV15HP is the better-sounding choice. A 15 inch ported subwoofer with output matching pricier rivals, plus balanced and RCA inputs for flexible setups. Watch for: Premium price ($2127), ported design room gain dependency, and mid-to-large 114.6 lbs (52 kg) footprint.
What the RSL (Rogersound Labs) Speedwoofer 12S does well: An affordable rear ported 12 inch subwoofer with strong deep bass output for movies. The catch: The 565.1H x 479.4W x 562.0D mm cabinet and 82 lbs (37.2 kg) mass make this a serious placement and moving commitment.
Buy the Rythmik FV15HP. It is rated higher for sound quality, and the $1,242.04 you would save on the RSL (Rogersound Labs) Speedwoofer 12S does not close the gap.
Looking for alternatives? See the complete Subwoofers rankings.
A 15 inch ported subwoofer with output matching pricier rivals, plus balanced and RCA inputs for flexible setups.
An affordable rear ported 12 inch subwoofer with strong deep bass output for movies.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Rythmik FV15HP | RSL (Rogersound Labs) Speedwoofer 12S | |
|---|---|---|
| Price | $2,127 | $884.96 |
| Ranked | #55 of 143 in Large Home Subwoofers (Over 75 lbs) | #131 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, rear |
| Output SPL at 12.5 Hz | 92.8 dB | - |
| Output SPL at 15 Hz | 105.1 dB | 104.4 dB |
| Output SPL at 20 Hz | 111.1 dB | 109.3 dB |
| Output SPL at 25 Hz | 116.1 dB | 110.9 dB |
| Output SPL at 31.5 Hz | 120.0 dB | 112.5 dB |
| Output SPL at 40 Hz | 122.5 dB | 113.4 dB |
| Output SPL at 50 Hz | 122.1 dB | 113.4 dB |
| Output SPL at 63 Hz | 121.8 dB | 113.0 dB |
| Output SPL at 80 Hz | 121.4 dB | 113.1 dB |
| Output SPL at 100 Hz | 121.2 dB | 112.2 dB |
| Output SPL at 125 Hz | 121.1 dB | - |
| CEA-2010-A Average (40-80Hz) | 122.0 dB | 113.2 dB |
| Dimensions | 24.5”H x 18.2”W x 24.2”D (622.3 x 463.5 x 615.9 mm) | 22.2”H x 18.9”W x 22.1”D (565.1 x 479.4 x 562.0 mm) |
| Weight | 115.1 lbs (52.2 kg) | 82 lbs (37.2 kg) |
| Warranty | 5/3 | 5/3 |
| Cabinet Color | black, white | black, white |
| Country | United States | United States |
| Measurement Source | Audioholics | ErinsAudioCorner |
| Drivers | 15” (381mm) driver | 12” (305mm) driver |
| Inputs | XLR (2), RCA (line/LFE) | - |
| XLR Input | Yes | - |
| RCA Input | Yes | - |
| TRS Input | No | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
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