Short answer: the Reaction Audio PV-15X. It ranks #16 of 97 subwoofers at $1999; the SVS PB-4000 ranks #53 and costs $2158.97, so there is not much of a tradeoff to weigh.
What the Reaction Audio PV-15X gets right: 15-inch ported driver delivers 126.2dB CEA-2010-A average from a purpose-built cinema-style cabinet. The tradeoff: Passive design requires a separate external amplifier and weighs 68 kg.
One note: the Reaction Audio PV-15X is discontinued, but it still ranks #16 of 97 subwoofers, ahead of most of what is still sold new, so it is worth considering used.
Buy the Reaction Audio PV-15X if the ranking matters more than the price. Buy the SVS PB-4000 if the price matters more than the ranking.
Specifications Side By Side
| Reaction Audio PV-15X | SVS PB-4000 | |
|---|---|---|
| Price | $1999 Discontinued | $2,158.97 |
| Ranked | #16 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #53 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, rear | ported, front |
| Output SPL at 15 Hz | 105.3 dB | 102.1 dB |
| Output SPL at 20 Hz | 111.3 dB | 115.3 dB |
| Output SPL at 25 Hz | 116.1 dB | 116.3 dB |
| Output SPL at 31.5 Hz | 119.8 dB | 117.8 dB |
| Output SPL at 40 Hz | 125.3 dB | 119.8 dB |
| Output SPL at 50 Hz | 126.8 dB | 121.7 dB |
| Output SPL at 63 Hz | 126.1 dB | 120.7 dB |
| Output SPL at 80 Hz | 126.5 dB | 119.2 dB |
| Output SPL at 100 Hz | 126.4 dB | 118.1 dB |
| Output SPL at 125 Hz | 126.1 dB | 117.5 dB |
| CEA-2010-A Average (40-80Hz) | 126.2 dB | 120.3 dB |
| Dimensions | 18.0"H x 22.0"W x 29.0"D (457.2 x 558.8 x 736.6 mm) | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Measurement Source | Data-bass | Audioholics |
| Discontinued | Yes | - |
| Weight | 149.9 lbs / 68 kg | 153.2 lbs / 69.5 kg |
| Drivers | 15" (381mm) driver | 13.5" (343mm) driver with ported design |
| Warranty | - | 5 |
| Cabinet Color | - | black |
| Country | - | United States |
The Two Speakers In Full
Reaction Audio PV-15X: $1999 Discontinued
Pros: 15-inch ported driver delivers 126.2dB CEA-2010-A average from a purpose-built cinema-style cabinet.
Cons: Passive design requires a separate external amplifier and weighs 68 kg. Discontinued.
| CEA-2010-A Average (40-80Hz) | 126.2 dB |
|---|---|
| Dimensions | 18.0"H x 22.0"W x 29.0"D (457.2 x 558.8 x 736.6 mm) |
| Discontinued | Yes |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Data-bass |
| Output SPL at 15 Hz | 105.3 dB |
| Output SPL at 20 Hz | 111.3 dB |
| Output SPL at 25 Hz | 116.1 dB |
| Output SPL at 31.5 Hz | 119.8 dB |
| Output SPL at 40 Hz | 125.3 dB |
| Output SPL at 50 Hz | 126.8 dB |
| Output SPL at 63 Hz | 126.1 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 |
| Weight | 149.9 lbs / 68 kg |
- Buy Used
- Head-to-Head Comparisons
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SVS PB-4000: $2,158.97 Amazon
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Drivers | 13.5" (343mm) driver with ported design |
| Enclosure | ported, front |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 102.1 dB |
| Output SPL at 20 Hz | 115.3 dB |
| Output SPL at 25 Hz | 116.3 dB |
| Output SPL at 31.5 Hz | 117.8 dB |
| Output SPL at 40 Hz | 119.8 dB |
| Output SPL at 50 Hz | 121.7 dB |
| Output SPL at 63 Hz | 120.7 dB |
| Output SPL at 80 Hz | 119.2 dB |
| Output SPL at 100 Hz | 118.1 dB |
| Output SPL at 125 Hz | 117.5 dB |
| Warranty | 5 |
| Weight | 153.2 lbs / 69.5 kg |
- Head-to-Head Comparisons
- SVS PB-4000 vs Monoprice Monolith M-15 V2
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- SVS PB-4000 vs HSU Research VTF-3 MK5 HP
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- See all 13 comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.