Short answer: the SVS PB-4000, if you are buying new. The Reaction Audio PV-15X ranks higher than it (#21 vs #62 of 110 subwoofers, 4.4/5 vs 4.2/5) but is discontinued, so only consider it used; the SVS PB-4000 is still sold new at $2158.97.
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 (149.9 lbs).
Buy the SVS PB-4000 new; the Reaction Audio PV-15X is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Reaction Audio PV-15X | SVS PB-4000 | |
|---|---|---|
| Price | $1999 Discontinued | $2,158.97 |
| Ranked | #21 of 110 in Large Home Subwoofers (Over 75 lbs) | #62 of 110 in Large 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"H x 22"W x 29"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 |
| Inputs | - | XLR (balanced), RCA (LFE/stereo) |
| 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 |
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Prices on this page were last checked September 23, 2026 at 11:24 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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The Two Speakers In Full
Reaction Audio PV-15X: $1999 Discontinued eBay
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.
Full Reaction Audio PV-15X review and specifications →
| CEA-2010-A Average (40-80Hz) | 126.2 dB |
|---|---|
| Dimensions | 18"H x 22"W x 29"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) |
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Reaction Audio PV-15X vs JTR Speakers Captivator 2400
- Reaction Audio PV-15X vs Funk Audio Ultra 21.0LX
- Reaction Audio PV-15X vs Monoprice Monolith M-215
- Reaction Audio PV-15X vs Monoprice Monolith 16 THX Ultra
- Reaction Audio PV-15X vs JBL 4645C
- Reaction Audio PV-15X vs Danley Sound Labs DTS10
- Reaction Audio PV-15X vs JTR Speakers Growler (2015)
- Reaction Audio PV-15X vs Chase Home Theater SS18.1
- See all 23 comparisons
SVS PB-4000: $2,158.97 Amazon eBay
Pros: Independent CEA-2010 testing records 115.3 dB at 20 Hz and 120.3 dB through 40-80 Hz. The ported, front enclosure with 13.5” (343mm) driver with ported design has the headroom for demanding film bass in a large room.
Cons: The 594.4H x 520.7W x 703.6D mm cabinet and 69.5 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Full SVS PB-4000 review and specifications →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| 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 |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA (LFE/stereo) |
| Measurement Source | Audioholics |
| Optical Input | No |
| 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 |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 153.2 lbs (69.5 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- SVS PB-4000 vs SVS SB-4000
- SVS PB-4000 vs Monoprice Monolith M-15 V2
- SVS PB-4000 vs Rythmik F18
- SVS PB-4000 vs HSU Research VTF-3 MK5 HP
- SVS PB-4000 vs Monoprice Monolith M15-S
- SVS PB-4000 vs HSU Research VTF-15H MK2
- SVS PB-4000 vs Rythmik FV15HP
- SVS PB-4000 vs JTR Speakers Captivator 1400
- See all 24 comparisons