Short answer: the Pro Audio Technology LFC-24sm. It ranks #4 of 143 subwoofers by sound quality (rated 4.6/5) at $10,000 and is still sold new; the Reaction Audio PV-15X ranks #22 (rated 4.4/5) and is discontinued, so it is only an option used.
Why pick the Reaction Audio PV-15X: A passive 15 inch ported subwoofer in a cinema style cabinet with strong output for home theater use, now discontinued. The catch: Passive design requires a separate external amplifier and weighs 149.9 lbs (68 kg).
What the Pro Audio Technology LFC-24sm does well: A giant 24 inch ported subwoofer with enormous deep bass output, built for large dedicated cinema rooms. The tradeoff: The 660.4H x 1536.7W x 533.4D mm cabinet and 266.1 lbs (120.7 kg) mass still need deliberate placement and calibration.
Buy the Pro Audio Technology LFC-24sm. It is rated higher for sound quality, and the Reaction Audio PV-15X is discontinued, so it is only available used.
Still deciding? The full Subwoofers rankings cover every ranked option.
A passive 15 inch ported subwoofer in a cinema style cabinet with strong output for home theater use, now discontinued.
A giant 24 inch ported subwoofer with enormous deep bass output, built for large dedicated cinema rooms.
Prices on this page were last checked October 29, 2026 at 4:42 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Specifications Side By Side
| Reaction Audio PV-15X | Pro Audio Technology LFC-24sm | |
|---|---|---|
| Price | $1,999 Passive, Discontinued | $10,000 Passive |
| Ranked | #22 of 143 in Large Home Subwoofers (Over 75 lbs) | #4 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, rear | ported, front |
| Output SPL at 15 Hz | 105.3 dB | - |
| Output SPL at 20 Hz | 111.3 dB | 123.7 dB |
| Output SPL at 25 Hz | 116.1 dB | 131.4 dB |
| Output SPL at 31.5 Hz | 119.8 dB | 133.6 dB |
| Output SPL at 40 Hz | 125.3 dB | 135.4 dB |
| Output SPL at 50 Hz | 126.8 dB | 136.0 dB |
| Output SPL at 63 Hz | 126.1 dB | 135.2 dB |
| Output SPL at 80 Hz | 126.5 dB | - |
| Output SPL at 100 Hz | 126.4 dB | - |
| Output SPL at 125 Hz | 126.1 dB | - |
| CEA-2010-A Average (40-80Hz) | 126.2 dB | 135.5 dB (avg of 3/4 bands) |
| Dimensions | 18”H x 22”W x 29”D (457.2 x 558.8 x 736.6 mm) | 26”H x 60.5”W x 21”D (660.4 x 1536.7 x 533.4 mm) |
| Measurement Source | Data-bass | Brent Butterworth |
| Weight | 149.9 lbs (68 kg) | 266.1 lbs (120.7 kg) |
| Drivers | 15” (381mm) driver | 24” (610mm) driver |
| Passive | Yes | Yes |
| Cabinet Color | - | black |
| Country | - | United States |
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