Power Sound Audio (PSA) T18 vs Power Sound Audio (PSA) V3600I

Short answer: the Power Sound Audio (PSA) T18. It ranks #8 of 110 subwoofers by sound quality at $4995; the Power Sound Audio (PSA) V3600I ranks #10 and costs $6995, which makes this an easy call rather than a real tradeoff.

Buy the Power Sound Audio (PSA) T18. It ranks higher for sound quality than the Power Sound Audio (PSA) V3600I and costs less, which settles it without a real tradeoff to make.

Want more options? Browse the full Subwoofers rankings.

Specifications Side By Side

Related Speaker Comparisons

How Power Sound Audio (PSA) T18 compares with other leading options:

• JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) T18
• JTR Speakers Captivator 215PRO vs Power Sound Audio (PSA) T18
• JTR Speakers Captivator S2 vs Power Sound Audio (PSA) T18
• Monoprice Monolith 16 THX Ultra vs Power Sound Audio (PSA) T18
• HSU Research VTF-3 MK5 HP vs Power Sound Audio (PSA) T18

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.

As an eBay Partner, we may be compensated if you make a purchase.

The Two Speakers In Full

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 S2
  • Power Sound Audio (PSA) T18 vs JTR Speakers Captivator 4000ULF
  • Power Sound Audio (PSA) T18 vs Monoprice Monolith 16 THX Ultra
  • Power Sound Audio (PSA) T18 vs HSU Research VTF-3 MK5 HP

Power Sound Audio (PSA) V3600I: $6995 eBay

Pros: Published CEA-2010 specifications list 119.4 dB at 20 Hz and 128.3 dB (avg of 3/4 bands) through 40-80 Hz. The ported, front enclosure with 2x 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 1117.6H x 508.0W x 635.0D mm cabinet and 88.9 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

Full Power Sound Audio (PSA) V3600I review and specifications →

CEA-2010-A Average (40-80Hz)	128.3 dB (avg of 3/4 bands)
Country	United States
Dimensions	44"H x 20"W x 25"D (1117.6 x 508.0 x 635.0 mm)
Drivers	2x 18" (457mm) driver
Enclosure	ported, front
Measurement Source	Manufacturer
Output SPL at 20 Hz	119.4 dB
Output SPL at 25 Hz	119.4 dB
Output SPL at 31.5 Hz	119.4 dB
Output SPL at 40 Hz	128.3 dB
Output SPL at 50 Hz	128.3 dB
Output SPL at 63 Hz	128.3 dB
Warranty	5
Weight	196 lbs (88.9 kg)

• Links
  • Power Sound Audio (PSA) V3600I Website
• Reviews, Comparisons and Sound Samples
  • These figures are manufacturer-specified rather than independently measured.
• Head-to-Head Comparisons
  • Power Sound Audio (PSA) V3600I vs Funk Audio Ultra 24.0
  • Power Sound Audio (PSA) V3600I vs JTR Speakers Captivator S2
  • Power Sound Audio (PSA) V3600I vs Funk Audio Custom 21.0
  • Power Sound Audio (PSA) V3600I vs Monoprice Monolith 16 THX Ultra
  • Power Sound Audio (PSA) V3600I vs HSU Research VTF-3 MK5 HP