Short answer: the Power Sound Audio (PSA) TRIAX if sound quality matters most, the SVS PB-4000 if price matters most. The Power Sound Audio (PSA) TRIAX ranks #5 of 110 subwoofers, rated 4.5/5, at $7995. The SVS PB-4000 ranks #62, rated 4.2/5, at $2158.97, $5836.03 cheaper.
Buy the Power Sound Audio (PSA) TRIAX if sound quality is the priority over the price, or the SVS PB-4000 if the price is the priority over sound quality.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Power Sound Audio (PSA) TRIAX | SVS PB-4000 | |
|---|---|---|
| Price | $7995 | $2,158.97 |
| Ranked | #5 of 110 in Large Home Subwoofers (Over 75 lbs) | #62 of 110 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 20 Hz | 119.8 dB | 115.3 dB |
| Output SPL at 25 Hz | 119.8 dB | 116.3 dB |
| Output SPL at 31.5 Hz | 119.8 dB | 117.8 dB |
| Output SPL at 40 Hz | 130.9 dB | 119.8 dB |
| Output SPL at 50 Hz | 130.9 dB | 121.7 dB |
| Output SPL at 63 Hz | 130.9 dB | 120.7 dB |
| CEA-2010-A Average (40-80Hz) | 130.9 dB (avg of 3/4 bands) | 120.3 dB |
| Dimensions | 23.5"H x 31"W x 27.5"D (596.9 x 787.4 x 698.5 mm) | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Weight | 229.9 lbs (104.3 kg) | 153.2 lbs (69.5 kg) |
| Warranty | 5 | 5 |
| Country | United States | United States |
| Measurement Source | Manufacturer | Audioholics |
| Drivers | 3x 15" (381mm) driver | 13.5" (343mm) driver with ported design |
| Inputs | XLR (balanced, with loop output) | XLR (balanced), RCA (LFE/stereo) |
| XLR Input | Yes | Yes |
| RCA Input | No | Yes |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Output SPL at 15 Hz | - | 102.1 dB |
| Output SPL at 80 Hz | - | 119.2 dB |
| Output SPL at 100 Hz | - | 118.1 dB |
| Output SPL at 125 Hz | - | 117.5 dB |
| Cabinet Color | - | black |
Related Speaker Comparisons
How Power Sound Audio (PSA) TRIAX compares with other leading options:
- JTR Speakers Orbit Shifter PRO vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Orbit Shifter LFU vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 4000ULF vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator 215PRO vs Power Sound Audio (PSA) TRIAX
- JTR Speakers Captivator S2 vs Power Sound Audio (PSA) TRIAX
Prices on this page were last checked September 23, 2026 at 11:24 PM 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
Power Sound Audio (PSA) TRIAX: $7995 eBay
Pros: 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.
Full Power Sound Audio (PSA) TRIAX review and specifications →
| 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
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head 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
- See all 14 comparisons
SVS PB-4000: $2,158.97 Amazon eBay
Pros: Independent CEA-2010 testing records 115.3 dB at 20 Hz and 120.3 dB through 40-80 Hz. The ported, front enclosure with 13.5” (343mm) driver with ported design has the headroom for demanding film bass in a large room.
Cons: The 594.4H x 520.7W x 703.6D mm cabinet and 69.5 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 SVS PB-4000 review and specifications →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 23.4"H x 20.5"W x 27.7"D (594.4 x 520.7 x 703.6 mm) |
| Drivers | 13.5" (343mm) driver with ported design |
| Enclosure | ported, front |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA (LFE/stereo) |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 15 Hz | 102.1 dB |
| Output SPL at 20 Hz | 115.3 dB |
| Output SPL at 25 Hz | 116.3 dB |
| Output SPL at 31.5 Hz | 117.8 dB |
| Output SPL at 40 Hz | 119.8 dB |
| Output SPL at 50 Hz | 121.7 dB |
| Output SPL at 63 Hz | 120.7 dB |
| Output SPL at 80 Hz | 119.2 dB |
| Output SPL at 100 Hz | 118.1 dB |
| Output SPL at 125 Hz | 117.5 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 153.2 lbs (69.5 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- SVS PB-4000 vs SVS SB-4000
- SVS PB-4000 vs Monoprice Monolith M-15 V2
- SVS PB-4000 vs Rythmik F18
- SVS PB-4000 vs HSU Research VTF-3 MK5 HP
- SVS PB-4000 vs Monoprice Monolith M15-S
- SVS PB-4000 vs HSU Research VTF-15H MK2
- SVS PB-4000 vs Rythmik FV15HP
- SVS PB-4000 vs JTR Speakers Captivator 1400
- See all 24 comparisons