JTR Speakers Captivator 4000ULF vs JTR Speakers Captivator S2

Last updated: October 21, 2026

Short answer: the JTR Speakers Captivator 4000ULF, if you are buying new. The JTR Speakers Captivator S2 measures as well as it (#9 vs #6 of 143 subwoofers, 4.5/5 vs 4.5/5) but is discontinued, so only consider it used; the JTR Speakers Captivator 4000ULF is still sold new at $5,699.

JTR Speakers Captivator 4000ULF vs JTR Speakers Captivator S2

Buy the JTR Speakers Captivator 4000ULF if you want one new; the JTR Speakers Captivator S2 is discontinued, so only look for it used.

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Specifications Side By Side

JTR Speakers Captivator 4000ULF JTR Speakers Captivator S2
Price$5,699 each$3,995 Discontinued
Ranked#6 of 143 in Large Home Subwoofers (Over 75 lbs)#9 of 143 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, frontsealed
Output SPL at 10 Hz111.0 dB100.3 dB
Output SPL at 12.5 Hz115.3 dB103.3 dB
Output SPL at 15 Hz119.3 dB108.7 dB
Output SPL at 20 Hz122.3 dB115.1 dB
Output SPL at 25 Hz126.1 dB119.7 dB
Output SPL at 31.5 Hz129.3 dB124.8 dB
Output SPL at 40 Hz130.7 dB129.3 dB
Output SPL at 50 Hz131.2 dB130.3 dB
Output SPL at 63 Hz130.9 dB129.4 dB
Output SPL at 80 Hz130.6 dB128.5 dB
Output SPL at 100 Hz130.5 dB128.1 dB
Output SPL at 125 Hz129.5 dB128.0 dB
CEA-2010-A Average (40-80Hz)130.8 dB129.4 dB
Dimensions41”H x 20.5”W x 39.5”D (1041.4 x 520.7 x 1003.3 mm)40”H x 21”W x 18”D (1016.0 x 533.4 x 457.2 mm)
Weight265 lbs (120.2 kg)220 lbs (99.8 kg)
Warranty5/35/3
Cabinet Colorblack, custom-
CountryUnited StatesUnited States
Measurement SourceData-bassData-bass
Drivers2x 18” (457mm) driver2x 18” (457mm) drivers
InputsXLR, RCAXLR (balanced), RCA
XLR InputYesYes
RCA InputYesYes
TRS InputNoNo
Optical InputNoNo
Coaxial InputNoNo
USB InputNoNo
HDMI InputNoNo
AES InputNoNo
Aux InputNoNo

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