JTR Speakers Captivator S2 vs Power Sound Audio (PSA) T18

Short answer: the Power Sound Audio (PSA) T18 on measured sound quality, the JTR Speakers Captivator S2 on price. The Power Sound Audio (PSA) T18 ranks #8 of 110 subwoofers at $4995. The JTR Speakers Captivator S2 ranks #9 at $3995, $1000 cheaper.

Buy the JTR Speakers Captivator S2 if the price matters more than sound quality. Buy the Power Sound Audio (PSA) T18 if sound quality matters more than the price.

Still deciding? The full Subwoofers rankings cover every ranked option.

Specifications Side By Side

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Prices on this page were last checked September 22, 2026 at 5:11 AM 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

JTR Speakers Captivator S2: $3995 eBay

Pros: Independent CEA-2010 testing records 115.1 dB at 20 Hz and 129.4 dB through 40-80 Hz. The sealed enclosure with 2x 18” (457mm) drivers has the headroom for demanding film bass in a large room.

Cons: The 1016.0H x 533.4W x 457.2D mm cabinet and 99.8 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Notes: Replaced by “RS2”

Full JTR Speakers Captivator S2 review and specifications →

AES Input	No
Aux Input	No
CEA-2010-A Average (40-80Hz)	129.4 dB
Coaxial Input	No
Country	United States
Dimensions	40"H x 21"W x 18"D (1016.0 x 533.4 x 457.2 mm)
Drivers	2x 18" (457mm) drivers
Enclosure	sealed
HDMI Input	No
Inputs	XLR (balanced), RCA
Measurement Source	Data-bass
Optical Input	No
Output SPL at 10 Hz	100.3 dB
Output SPL at 12.5 Hz	103.3 dB
Output SPL at 15 Hz	108.7 dB
Output SPL at 20 Hz	115.1 dB
Output SPL at 25 Hz	119.7 dB
Output SPL at 31.5 Hz	124.8 dB
Output SPL at 40 Hz	129.3 dB
Output SPL at 50 Hz	130.3 dB
Output SPL at 63 Hz	129.4 dB
Output SPL at 80 Hz	128.5 dB
Output SPL at 100 Hz	128.1 dB
Output SPL at 125 Hz	128.0 dB
RCA Input	Yes
TRS Input	No
USB Input	No
Warranty	5/3
Weight	220 lbs (99.8 kg)
XLR Input	Yes

• Links
  • JTR Speakers Captivator S2 Website
• 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
  • JTR Speakers Captivator S2 vs Power Sound Audio (PSA) V3600I
  • JTR Speakers Captivator S2 vs Funk Audio Ultra 24.0
  • JTR Speakers Captivator S2 vs JTR Speakers Captivator 215PRO
  • JTR Speakers Captivator S2 vs JTR Speakers Captivator 4000ULF
  • JTR Speakers Captivator S2 vs Funk Audio Custom 21.0
  • JTR Speakers Captivator S2 vs Power Sound Audio (PSA) TRIAX
  • JTR Speakers Captivator S2 vs JTR Speakers Growler (2015)
  • JTR Speakers Captivator S2 vs Pro Audio Technology LFC-24sm
  • See all 48 comparisons

Power Sound Audio (PSA) T18: $4995 eBay

Pros: Published CEA-2010 specifications list 115.7 dB at 20 Hz and 129.7 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 596.9H x 787.4W x 698.5D mm cabinet and 77.1 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Full Power Sound Audio (PSA) T18 review and specifications →

AES Input	No
Aux Input	No
CEA-2010-A Average (40-80Hz)	129.7 dB (avg of 3/4 bands)
Coaxial Input	No
Country	United States
Dimensions	23.5"H x 31"W x 27.5"D (596.9 x 787.4 x 698.5 mm)
Drivers	18" (457mm) driver
Enclosure	sealed
HDMI Input	No
Inputs	XLR (balanced, with loop output), RCA
Measurement Source	Manufacturer
Optical Input	No
Output SPL at 20 Hz	115.7 dB
Output SPL at 25 Hz	115.7 dB
Output SPL at 31.5 Hz	115.7 dB
Output SPL at 40 Hz	129.7 dB
Output SPL at 50 Hz	129.7 dB
Output SPL at 63 Hz	129.7 dB
RCA Input	Yes
TRS Input	No
USB Input	No
Warranty	5
Weight	170 lbs (77.1 kg)
XLR Input	Yes

• Links
  • Power Sound Audio (PSA) T18 Website
• Reviews, Comparisons and Sound Samples
  • These figures are manufacturer-specified rather than independently measured.
• Head-to-Head Comparisons
  • Power Sound Audio (PSA) T18 vs JTR Speakers Captivator 215PRO
  • Power Sound Audio (PSA) T18 vs JTR Speakers Captivator 4000ULF
  • Power Sound Audio (PSA) T18 vs Power Sound Audio (PSA) V3600I
  • Power Sound Audio (PSA) T18 vs Monoprice Monolith 16 THX Ultra
  • Power Sound Audio (PSA) T18 vs HSU Research VTF-3 MK5 HP