Power Sound Audio (PSA) TRIAX Review: Rated 4.5/5

The Power Sound Audio (PSA) TRIAX is rated 4.5/5 for sound quality, #5 of 143 Large Home Subwoofers (Over 75 lbs). See all Subwoofers rankings for every top pick.

Prices on this page were last checked October 28, 2026 at 1:06 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.

Brand: Power Sound Audio

#5 Power Sound Audio (PSA) TRIAX: $7,995 Discontinued eBay

Pros: A sealed subwoofer with three 15 inch drivers and massive deep bass headroom for big rooms, now discontinued but worth buying used. Published CEA-2010 specifications list 119.8 dB at 20 Hz and 130.9 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 3x 15” (381mm) 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 104.3 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks. Discontinued.

Is the Power Sound Audio (PSA) TRIAX right for you?

Skip it if

• you need to move it often (104 kg each).
• you want to buy it new: it is discontinued.

Released	May 2013 (13 years ago)
AES Input	No
Aux Input	No
CEA-2010-A Average (40-80Hz)	130.9 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	3x 15” (381mm) driver
Enclosure	sealed
HDMI Input	No
Inputs	XLR (balanced, with loop output)
Measurement Source	Manufacturer
Optical Input	No
Output SPL at 20 Hz	119.8 dB
Output SPL at 25 Hz	119.8 dB
Output SPL at 31.5 Hz	119.8 dB
Output SPL at 40 Hz	130.9 dB
Output SPL at 50 Hz	130.9 dB
Output SPL at 63 Hz	130.9 dB
RCA Input	No
TRS Input	No
USB Input	No
Warranty	5
Weight	229.9 lbs (104.3 kg)
XLR Input	Yes

• Links
  • Power Sound Audio (PSA) TRIAX Website
• Reviews, Comparisons and Sound Samples
  • These figures are manufacturer-specified rather than independently measured.

Head-to-Head Comparisons

15 comparisons

• Power Sound Audio (PSA) TRIAX vs JTR Speakers Captivator 4000ULF
• Power Sound Audio (PSA) TRIAX vs JTR Speakers Captivator 215PRO
• Power Sound Audio (PSA) TRIAX vs JTR Speakers Orbit Shifter LFU
• Power Sound Audio (PSA) TRIAX vs JTR Speakers Orbit Shifter PRO
• Power Sound Audio (PSA) TRIAX vs JTR Speakers Captivator S2
• Power Sound Audio (PSA) TRIAX vs Monoprice Monolith 16 THX Ultra
• Power Sound Audio (PSA) TRIAX vs Reaction Audio PV-15X
• Power Sound Audio (PSA) TRIAX vs Monoprice Monolith M-215
• Power Sound Audio (PSA) TRIAX vs Rythmik FV15HP
• Power Sound Audio (PSA) TRIAX vs HSU Research VTF-15H MK2
• Power Sound Audio (PSA) TRIAX vs HSU Research VTF-3 MK5 HP
• Power Sound Audio (PSA) TRIAX vs SVS PB-4000
• Power Sound Audio (PSA) TRIAX vs Monoprice Monolith M-15 V2
• Power Sound Audio (PSA) TRIAX vs Rythmik F18
• Power Sound Audio (PSA) TRIAX vs Monoprice Monolith M15-S

More Power Sound Audio speakers →