Short answer: both are discontinued, so this only matters if you are buying used. Used, the JTR Speakers Captivator S2 is the better pick: it ranks #9 of 143 subwoofers by sound quality (rated 4.5/5), against #139 (rated 3.4/5) for the Genelec HTS4B. If you want one new, the JTR Speakers Orbit Shifter PRO ranks #1 at $4,499.
The JTR Speakers Captivator S2 is the better-sounding pick. A tall sealed subwoofer with two 18 inch drivers and serious deep bass output for demanding movies in a large room. The catch: The 1016.0H x 533.4W x 457.2D mm cabinet and 220 lbs (99.8 kg) mass make this a serious placement and moving commitment.
Why pick the Genelec HTS4B: A 12 inch passive radiator subwoofer with XLR and RCA inputs and a link output, now discontinued. The tradeoff: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority.
Buy the JTR Speakers Captivator S2 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the JTR Speakers Orbit Shifter PRO instead.
Looking for alternatives? See the complete Subwoofers rankings.
A tall sealed subwoofer with two 18 inch drivers and serious deep bass output for demanding movies in a large room.
A 12 inch passive radiator subwoofer with XLR and RCA inputs and a link output, now discontinued.
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Specifications Side By Side
| JTR Speakers Captivator S2 | Genelec HTS4B | |
|---|---|---|
| Price | $3,995 Discontinued | $2,995 Discontinued |
| Ranked | #9 of 143 in Large Home Subwoofers (Over 75 lbs) | #139 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | passive radiator |
| Output SPL at 10 Hz | 100.3 dB | - |
| Output SPL at 12.5 Hz | 103.3 dB | - |
| Output SPL at 15 Hz | 108.7 dB | 92.1 dB |
| Output SPL at 20 Hz | 115.1 dB | 97.9 dB |
| Output SPL at 25 Hz | 119.7 dB | 100.2 dB |
| Output SPL at 31.5 Hz | 124.8 dB | 103.3 dB |
| Output SPL at 40 Hz | 129.3 dB | 107.3 dB |
| Output SPL at 50 Hz | 130.3 dB | 110.1 dB |
| Output SPL at 63 Hz | 129.4 dB | 111.6 dB |
| Output SPL at 80 Hz | 128.5 dB | 112.3 dB |
| Output SPL at 100 Hz | 128.1 dB | - |
| Output SPL at 125 Hz | 128.0 dB | - |
| CEA-2010-A Average (40-80Hz) | 129.4 dB | 110.3 dB |
| Dimensions | 40”H x 21”W x 18”D (1016.0 x 533.4 x 457.2 mm) | 20.4”H x 19”W x 18.3”D (517.4 x 482.6 x 465.1 mm) |
| Weight | 220 lbs (99.8 kg) | 81.6 lbs (37.0 kg) |
| Warranty | 5/3 | 2(+3) |
| Country | United States | Finland |
| Measurement Source | Data-bass | Ilkka Rissanen |
| Drivers | 2x 18” (457mm) drivers | 12” (305mm) driver |
| Inputs | XLR (balanced), RCA | XLR (in plus link-out), RCA (line-level) |
| 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 |
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