JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) T18

Last updated: August 9, 2026

Short answer: the JTR Speakers Captivator 4000ULF for the higher ranking, the Power Sound Audio (PSA) T18 for the lower price. The JTR Speakers Captivator 4000ULF ranks #4 of 97 subwoofers at $5000. The Power Sound Audio (PSA) T18 ranks #6 at $4995, $5 cheaper.

Buy the JTR Speakers Captivator 4000ULF if the ranking matters more than the price. Buy the Power Sound Audio (PSA) T18 if the price matters more than the ranking.

Specifications Side By Side

JTR Speakers Captivator 4000ULF Power Sound Audio (PSA) T18
Price$5,000$4995
Ranked#4 of 97 in Large Powered Home Subwoofers (Over 75 lbs)#6 of 97 in Large Powered Home Subwoofers (Over 75 lbs)
Enclosureported, frontsealed
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 dB115.7 dB
Output SPL at 25 Hz126.1 dB115.7 dB
Output SPL at 31.5 Hz129.3 dB115.7 dB
Output SPL at 40 Hz130.7 dB129.7 dB
Output SPL at 50 Hz131.2 dB129.7 dB
Output SPL at 63 Hz130.9 dB129.7 dB
Output SPL at 80 Hz130.6 dB-
Output SPL at 100 Hz130.5 dB-
Output SPL at 125 Hz129.5 dB-
CEA-2010-A Average (40-80Hz)130.8 dB129.7 dB (avg of 3/4 bands)
Dimensions41.0"H x 20.5"W x 39.5"D (1041.4 x 520.7 x 1003.3 mm)23.5"H x 31.0"W x 27.5"D (596.9 x 787.4 x 698.5 mm)
Weight265 lbs / 120.2 kg170 lbs / 77.1 kg
Warranty5/35
Cabinet Colorblack, custom-
CountryUnited StatesUnited States
Measurement SourceData-bassManufacturer
Drivers2x 18" (457mm) driver18" (457mm) driver

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

Power Sound Audio (PSA) T18: $4995

Power Sound Audio (PSA) T18 ranking card

CEA-2010-A Average (40-80Hz)129.7 dB (avg of 3/4 bands)
CountryUnited States
Dimensions23.5"H x 31.0"W x 27.5"D (596.9 x 787.4 x 698.5 mm)
Drivers18" (457mm) driver
Enclosuresealed
Measurement SourceManufacturer
Output SPL at 20 Hz115.7 dB
Output SPL at 25 Hz115.7 dB
Output SPL at 31.5 Hz115.7 dB
Output SPL at 40 Hz129.7 dB
Output SPL at 50 Hz129.7 dB
Output SPL at 63 Hz129.7 dB
Warranty5
Weight170 lbs / 77.1 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.