Short answer: the Rythmik F12 for servo-controlled bass, the Klipsch R-121SW for the much lower price. The F12 ranks #21 of 212 medium subwoofers at $1,439, pairing a sealed 12-inch servo driver with 370W RMS for excellent value. The R-121SW costs $389.99, with a 12-inch spun-copper driver and 200W RMS delivering controlled, musical bass with minimal distortion.
Buy the Klipsch R-121SW if the price is the priority over sound quality, or the Rythmik F12 if sound quality is the priority over the price.
Still deciding? The full Subwoofers rankings cover every ranked option.
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Specifications Side By Side
| Klipsch R-121SW | Rythmik F12 | |
|---|---|---|
| Price | $389.99 | $1,439 |
| Ranked | #132 of 212 in Medium Home Subwoofers (30-75 lbs) | #21 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, rear | sealed |
| Output SPL at 15 Hz | 90.7 dB | - |
| Output SPL at 20 Hz | 96.0 dB | 103.6 dB |
| Output SPL at 25 Hz | 98.4 dB | 106.7 dB |
| Output SPL at 31.5 Hz | 102.3 dB | 113.5 dB |
| Output SPL at 40 Hz | 108.2 dB | 118.3 dB |
| Output SPL at 50 Hz | 112.4 dB | 119.1 dB |
| Output SPL at 63 Hz | 112.9 dB | 120.4 dB |
| Output SPL at 80 Hz | 111.3 dB | 119.6 dB |
| Output SPL at 100 Hz | 109.9 dB | - |
| Output SPL at 125 Hz | 108.3 dB | - |
| CEA-2010-A Average (40-80Hz) | 111.2 dB | 119.3 dB |
| Dimensions | 16.6”H x 16”W x 19.7”D (421.6 x 406.4 x 500.4 mm) | 15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm) |
| Weight | 35.1 lbs (15.9 kg) | 75 lbs (34.0 kg) |
| Warranty | 5/2 | 5/3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Amplifier Power | 200W RMS | 370W RMS |
| Frequency Response | 28-120Hz | 14Hz extension |
| Drivers | 12” (305mm) driver | 12” (305mm) driver |
| Output SPL at 16 Hz | - | 101.0 dB |
| 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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