Short answer: the Rythmik F18, if you are buying new. The JTR Speakers Growler (2015) ranks higher than it (#13 vs #85 of 143 subwoofers, 4.5/5 vs 4.1/5) but is discontinued, so only consider it used; the Rythmik F18 is still sold new at $2,344.
What the Rythmik F18 does well: A massive sealed 18 inch subwoofer with tight, powerful bass and balanced XLR inputs, built for big home theaters. The tradeoff: The 520.7H x 520.7W x 533.4D mm cabinet and 115.1 lbs (52.2 kg) mass make this a serious placement and moving commitment.
The JTR Speakers Growler (2015) is the better-sounding choice. A 12 inch ported subwoofer with output close to far bigger flagships, a strong used pick now that it is discontinued. Watch for: Ported design room interaction, 99.2 lbs (45 kg) size, and $2995 cost.
Buy the Rythmik F18 new; the JTR Speakers Growler (2015) is no longer sold new, so it only makes sense as a used find.
Looking for alternatives? See the complete Subwoofers rankings.
A massive sealed 18 inch subwoofer with tight, powerful bass and balanced XLR inputs, built for big home theaters.
A 12 inch ported subwoofer with output close to far bigger flagships, a strong used pick now that it is discontinued.
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Specifications Side By Side
| Rythmik F18 | JTR Speakers Growler (2015) | |
|---|---|---|
| Price | $2,344 | $2,995 Passive, Discontinued |
| Ranked | #85 of 143 in Large Home Subwoofers (Over 75 lbs) | #13 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 10 Hz | 93.7 dB | - |
| Output SPL at 12.5 Hz | 97.4 dB | - |
| Output SPL at 15 Hz | 102.0 dB | - |
| Output SPL at 20 Hz | 106.2 dB | 92.8 dB |
| Output SPL at 25 Hz | 110.9 dB | 97.2 dB |
| Output SPL at 31.5 Hz | 114.3 dB | 106.6 dB |
| Output SPL at 40 Hz | 117.1 dB | 122.7 dB |
| Output SPL at 50 Hz | 119.1 dB | 130.0 dB |
| Output SPL at 63 Hz | 120.5 dB | 133.6 dB |
| Output SPL at 80 Hz | 121.2 dB | 134.4 dB |
| Output SPL at 100 Hz | 121.4 dB | 135.5 dB |
| Output SPL at 125 Hz | 121.4 dB | 136.0 dB |
| CEA-2010-A Average (40-80Hz) | 119.5 dB | 130.2 dB |
| Dimensions | 20.5”H x 20.5”W x 21”D (520.7 x 520.7 x 533.4 mm) | 22.5”H x 30”W x 20”D (571.5 x 762.0 x 508.0 mm) |
| Weight | 115.1 lbs (52.2 kg) | 100.1 lbs (45.4 kg) |
| Warranty | 5/3 | 5 years |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Data-bass | Data-bass |
| Drivers | 18” (457mm) 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 | - |
| Passive | - | Yes |
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