Short answer: the Reaction Audio PV-15X for output, the HSU Research VTF-15H MK2 for a self-contained amplifier. The PV-15X’s 15-inch ported driver delivers a 126.2dB CEA-2010-A average from a purpose-built cinema-style cabinet, but it is passive and requires a separate external amplifier, and it weighs 68 kg (149.9 lbs). The HSU reaches 121.8dB, is prone to room modes, and costs $1,499.

Buy the Reaction Audio PV-15X 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, buy the HSU Research VTF-TN1, which replaces the HSU Research VTF-15H MK2.
Looking for alternatives? See the complete Subwoofers rankings.
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Specifications Side By Side
| HSU Research VTF-15H MK2 | Reaction Audio PV-15X | |
|---|---|---|
| Price | $1,499 Discontinued | $1,999 Passive, Discontinued |
| Ranked | #57 of 143 in Large Home Subwoofers (Over 75 lbs) | #22 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, rear |
| Output SPL at 15 Hz | 101.6 dB | 105.3 dB |
| Output SPL at 20 Hz | 108.4 dB | 111.3 dB |
| Output SPL at 25 Hz | 114.8 dB | 116.1 dB |
| Output SPL at 31.5 Hz | 119.4 dB | 119.8 dB |
| Output SPL at 40 Hz | 122.9 dB | 125.3 dB |
| Output SPL at 50 Hz | 122.5 dB | 126.8 dB |
| Output SPL at 63 Hz | 121.1 dB | 126.1 dB |
| Output SPL at 80 Hz | 120.5 dB | 126.5 dB |
| CEA-2010-A Average (40-80Hz) | 121.8 dB | 126.2 dB |
| Dimensions | 24”H x 18”W x 26”D (609.6 x 457.2 x 660.4 mm) | 18”H x 22”W x 29”D (457.2 x 558.8 x 736.6 mm) |
| Weight | 110 lbs (49.9 kg) | 149.9 lbs (68 kg) |
| Warranty | 7/2(+3) | - |
| Cabinet Color | black, wood | - |
| Country | United States | - |
| Measurement Source | Manufacturer | Data-bass |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
| Output SPL at 100 Hz | - | 126.4 dB |
| Output SPL at 125 Hz | - | 126.1 dB |
| Passive | - | Yes |
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