Short answer: the Rythmik F12 on value, the JTR Captivator 212PRO on amplifier power. The F12 is a sealed 12-inch servo sub with 370W RMS that offers excellent value at $1,439 against $2,799. The JTR answers with a dual 12-inch ported cabinet and a 1200W DSP amp, though its 70.5 lbs (32 kg) frame and ported design need room integration.
Buy the JTR Speakers Captivator 212PRO. It is rated higher for sound quality, and saving $1,360 with the Rythmik F12 does not make up for the sound-quality gap.
Looking for alternatives? See the complete Subwoofers rankings.
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Specifications Side By Side
| JTR Speakers Captivator 212PRO | Rythmik F12 | |
|---|---|---|
| Price | $2,799 each | $1,439 |
| Ranked | #1 of 212 in Medium Home Subwoofers (30-75 lbs) | #21 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | sealed |
| Output SPL at 25 Hz | 95.4 dB | 106.7 dB |
| Output SPL at 31.5 Hz | 112.2 dB | 113.5 dB |
| Output SPL at 40 Hz | 122.7 dB | 118.3 dB |
| Output SPL at 50 Hz | 129.2 dB | 119.1 dB |
| Output SPL at 63 Hz | 131.3 dB | 120.4 dB |
| Output SPL at 80 Hz | 133.2 dB | 119.6 dB |
| Output SPL at 100 Hz | 134.6 dB | - |
| Output SPL at 125 Hz | 135.2 dB | - |
| CEA-2010-A Average (40-80Hz) | 129.1 dB | 119.3 dB |
| Dimensions | 16”H x 30”W x 22.5”D (406.4 x 762.0 x 571.5 mm) | 15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm) |
| Weight | 71 lbs (32.2 kg) | 75 lbs (34.0 kg) |
| Warranty | 5/3 | 5/3 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Data-bass | Brent Butterworth |
| Amplifier Power | 1200W RMS; Class D with DSP | 370W RMS |
| Inputs | XLR and RCA | XLR (2), RCA (line/LFE) |
| Drivers | 2x 12” (305mm) drivers | 12” (305mm) driver |
| XLR Input | Yes | Yes |
| RCA Input | Yes | Yes |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Output SPL at 20 Hz | - | 103.6 dB |
| Frequency Response | - | 14Hz extension |
| Output SPL at 16 Hz | - | 101.0 dB |
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