JTR Speakers Captivator 4000ULF vs Reaction Audio PV-15X

Last updated: August 9, 2026

Short answer: the JTR Speakers Captivator 4000ULF for the higher ranking, the Reaction Audio PV-15X for the lower price. The JTR Speakers Captivator 4000ULF ranks #4 of 97 subwoofers at $5000. The Reaction Audio PV-15X ranks #16 at $1999, $3001 cheaper.

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 JTR Speakers Captivator 4000ULF if the ranking matters more than the price. Buy the Reaction Audio PV-15X if the price matters more than the ranking.

Specifications Side By Side

JTR Speakers Captivator 4000ULF Reaction Audio PV-15X
Price$5,000$1999 Discontinued
Ranked#4 of 97 in Large Powered Home Subwoofers (Over 75 lbs)#16 of 97 in Large Powered Home Subwoofers (Over 75 lbs)
Enclosureported, frontported, rear
Output SPL at 10 Hz111.0 dB-
Output SPL at 12.5 Hz115.3 dB-
Output SPL at 15 Hz119.3 dB105.3 dB
Output SPL at 20 Hz122.3 dB111.3 dB
Output SPL at 25 Hz126.1 dB116.1 dB
Output SPL at 31.5 Hz129.3 dB119.8 dB
Output SPL at 40 Hz130.7 dB125.3 dB
Output SPL at 50 Hz131.2 dB126.8 dB
Output SPL at 63 Hz130.9 dB126.1 dB
Output SPL at 80 Hz130.6 dB126.5 dB
Output SPL at 100 Hz130.5 dB126.4 dB
Output SPL at 125 Hz129.5 dB126.1 dB
CEA-2010-A Average (40-80Hz)130.8 dB126.2 dB
Dimensions41.0"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)18.0"H x 22.0"W x 29.0"D (457.2 x 558.8 x 736.6 mm)
Weight265 lbs / 120.2 kg149.9 lbs / 68 kg
Warranty5/3-
Cabinet Colorblack, custom-
CountryUnited States-
Measurement SourceData-bassData-bass
Drivers2x 18" (457mm) driver15" (381mm) driver
Discontinued-Yes

The Two Speakers In Full

JTR Speakers Captivator 4000ULF: $5,000

JTR Speakers Captivator 4000ULF ranking card

CEA-2010-A Average (40-80Hz)130.8 dB
Cabinet Colorblack, custom
CountryUnited States
Dimensions41.0"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)
Drivers2x 18" (457mm) driver
Enclosureported, front
Measurement SourceData-bass
Output SPL at 10 Hz111.0 dB
Output SPL at 12.5 Hz115.3 dB
Output SPL at 15 Hz119.3 dB
Output SPL at 20 Hz122.3 dB
Output SPL at 25 Hz126.1 dB
Output SPL at 31.5 Hz129.3 dB
Output SPL at 40 Hz130.7 dB
Output SPL at 50 Hz131.2 dB
Output SPL at 63 Hz130.9 dB
Output SPL at 80 Hz130.6 dB
Output SPL at 100 Hz130.5 dB
Output SPL at 125 Hz129.5 dB
Warranty5/3
Weight265 lbs / 120.2 kg

Reaction Audio PV-15X: $1999 Discontinued

Reaction Audio PV-15X ranking card

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
Dimensions18.0"H x 22.0"W x 29.0"D (457.2 x 558.8 x 736.6 mm)
DiscontinuedYes
Drivers15" (381mm) driver
Enclosureported, rear
Measurement SourceData-bass
Output SPL at 15 Hz105.3 dB
Output SPL at 20 Hz111.3 dB
Output SPL at 25 Hz116.1 dB
Output SPL at 31.5 Hz119.8 dB
Output SPL at 40 Hz125.3 dB
Output SPL at 50 Hz126.8 dB
Output SPL at 63 Hz126.1 dB
Output SPL at 80 Hz126.5 dB
Output SPL at 100 Hz126.4 dB
Output SPL at 125 Hz126.1 dB
Weight149.9 lbs / 68 kg

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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.