Short answer: the JTR Speakers Captivator 4000ULF. It ranks #6 of 143 subwoofers by sound quality (rated 4.5/5) at $5,699 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.
Buy the JTR Speakers Captivator 4000ULF. It is rated higher for sound quality, and the Reaction Audio PV-15X is discontinued, so it is only available used.
Looking for alternatives? See the complete Subwoofers rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| JTR Speakers Captivator 4000ULF | Reaction Audio PV-15X | |
|---|---|---|
| Price | $5,699 each | $1,999 Passive, Discontinued |
| Ranked | #6 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 10 Hz | 111.0 dB | - |
| Output SPL at 12.5 Hz | 115.3 dB | - |
| Output SPL at 15 Hz | 119.3 dB | 105.3 dB |
| Output SPL at 20 Hz | 122.3 dB | 111.3 dB |
| Output SPL at 25 Hz | 126.1 dB | 116.1 dB |
| Output SPL at 31.5 Hz | 129.3 dB | 119.8 dB |
| Output SPL at 40 Hz | 130.7 dB | 125.3 dB |
| Output SPL at 50 Hz | 131.2 dB | 126.8 dB |
| Output SPL at 63 Hz | 130.9 dB | 126.1 dB |
| Output SPL at 80 Hz | 130.6 dB | 126.5 dB |
| Output SPL at 100 Hz | 130.5 dB | 126.4 dB |
| Output SPL at 125 Hz | 129.5 dB | 126.1 dB |
| CEA-2010-A Average (40-80Hz) | 130.8 dB | 126.2 dB |
| Dimensions | 41”H x 20.5”W x 39.5”D (1041.4 x 520.7 x 1003.3 mm) | 18”H x 22”W x 29”D (457.2 x 558.8 x 736.6 mm) |
| Weight | 265 lbs (120.2 kg) | 149.9 lbs (68 kg) |
| Warranty | 5/3 | - |
| Cabinet Color | black, custom | - |
| Country | United States | - |
| Measurement Source | Data-bass | Data-bass |
| Drivers | 2x 18” (457mm) driver | 15” (381mm) driver |
| Inputs | XLR, RCA | - |
| 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 | - |
| Passive | - | Yes |
Related Speaker Comparisons
How JTR Speakers Captivator 4000ULF compares with other leading options:
- JTR Speakers Captivator 4000ULF vs JTR Speakers Orbit Shifter PRO
- JTR Speakers Captivator 4000ULF vs JTR Speakers Orbit Shifter LFU
- JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 215PRO vs JTR Speakers Captivator 4000ULF
- JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) T18