Short answer: both are discontinued, and they are rated the same for sound quality (#50 and #49 of 143 subwoofers). Either one is only an option used, so choose on condition and price. If you want one new, the JTR Speakers Orbit Shifter PRO ranks #1 at $4,499.
Why pick the Power Sound Audio (PSA) XV30FSE: A tall dual 15 inch ported subwoofer with strong deep bass for large home theaters, now discontinued. The tradeoff: The 1143.0H x 469.9W x 571.5D mm cabinet and 162 lbs (73.5 kg) mass make this a serious placement and moving commitment.
Why pick the Elemental Designs A7S-450: A sealed 18 inch cube subwoofer with strong upper bass punch for movies and music, a bargain when found used. The tradeoff: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority.
Buy the Power Sound Audio (PSA) XV30FSE or the Elemental Designs A7S-450, whichever you find used in better condition; both are discontinued. For a new speaker, start with the JTR Speakers Orbit Shifter PRO instead.
Want more options? Browse the full Subwoofers rankings.
A tall dual 15 inch ported subwoofer with strong deep bass for large home theaters, now discontinued.
A sealed 18 inch cube subwoofer with strong upper bass punch for movies and music, a bargain when found used.
Prices on this page were last checked October 23, 2026 at 8:27 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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Specifications Side By Side
| Power Sound Audio (PSA) XV30FSE | Elemental Designs A7S-450 | |
|---|---|---|
| Price | $4,995 Discontinued | $499 Discontinued |
| Ranked | #50 of 143 in Large Home Subwoofers (Over 75 lbs) | #49 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 20 Hz | 114.7 dB | 103.4 dB |
| Output SPL at 25 Hz | 114.7 dB | 109.8 dB |
| Output SPL at 31.5 Hz | 114.7 dB | 115.5 dB |
| Output SPL at 40 Hz | 122.3 dB | 120.8 dB |
| Output SPL at 50 Hz | 122.3 dB | 124.0 dB |
| Output SPL at 63 Hz | 122.3 dB | 123.1 dB |
| CEA-2010-A Average (40-80Hz) | 122.3 dB (avg of 3/4 bands) | 122.3 dB |
| Dimensions | 45”H x 18.5”W x 22.5”D (1143.0 x 469.9 x 571.5 mm) | 22.2”H x 22.2”W x 22.2”D (565.1 x 565.1 x 565.1 mm) |
| Weight | 162 lbs (73.5 kg) | 140 lbs (63.5 kg) |
| Warranty | 5 | - |
| Country | United States | United States |
| Measurement Source | Manufacturer | Audioholics |
| Drivers | 2x 15” (381mm) driver | 18” (457mm) driver |
| Output SPL at 12.5 Hz | - | 93.0 dB |
| Output SPL at 15 Hz | - | 97.6 dB |
| Output SPL at 80 Hz | - | 121.3 dB |
| Output SPL at 100 Hz | - | 119.8 dB |
| Output SPL at 125 Hz | - | 118.8 dB |
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