Short answer: the Reaction Audio PS-15X. It ranks #23 of 97 subwoofers by sound quality at $1999; the Paradigm Signature Sub 2 ranks #24 and costs $9494.56, which makes this an easy call rather than a real tradeoff.
What the Paradigm Signature Sub 2 offers: Independent CEA-2010 testing records 109.4 dB at 20 Hz and 123.7 dB through 40-80 Hz. The sealed enclosure with 6x 10” (254mm) driver has the headroom for demanding film bass in a large room. Watch for: The 622.3H x 603.2W x 568.2D 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.
What the Reaction Audio PS-15X offers: Independent CEA-2010 testing records 102.8 dB at 20 Hz and 124.6 dB through 40-80 Hz. The ported, rear enclosure with 15” (381mm) driver delivers formidable upper-bass output for movie effects and music. Watch for: 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. The 508.0H x 457.2W x 508.0D mm cabinet and 72 kg mass still require deliberate placement and calibration.
Buy the Reaction Audio PS-15X. It ranks higher for sound quality than the Paradigm Signature Sub 2 and costs less, which settles it without a real tradeoff to make.
Specifications Side By Side
| Paradigm Signature Sub 2 | Reaction Audio PS-15X | |
|---|---|---|
| Price | $9,494.56 | $1999 Discontinued |
| Ranked | #24 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #23 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, rear |
| Output SPL at 10 Hz | 97.7 dB | - |
| Output SPL at 12.5 Hz | 101.2 dB | 92.5 dB |
| Output SPL at 15 Hz | 105.6 dB | 96.9 dB |
| Output SPL at 20 Hz | 109.4 dB | 102.8 dB |
| Output SPL at 25 Hz | 112.9 dB | 108.8 dB |
| Output SPL at 31.5 Hz | 116.2 dB | 115.6 dB |
| Output SPL at 40 Hz | 119.9 dB | 121.1 dB |
| Output SPL at 50 Hz | 123.2 dB | 124.5 dB |
| Output SPL at 63 Hz | 125.5 dB | 125.8 dB |
| Output SPL at 80 Hz | 126.0 dB | 127.0 dB |
| Output SPL at 100 Hz | 125.1 dB | 127.0 dB |
| Output SPL at 125 Hz | 123.3 dB | 126.9 dB |
| CEA-2010-A Average (40-80Hz) | 123.7 dB | 124.6 dB |
| Dimensions | 24.5"H x 23.7"W x 22.4"D (622.3 x 603.2 x 568.2 mm) | 20"H x 18"W x 20"D (508.0 x 457.2 x 508.0 mm) |
| Weight | 229.9 lbs / 104.3 kg | 158.7 lbs / 72 kg |
| Warranty | 3 | - |
| Cabinet Color | black, wood | - |
| Country | Canada | - |
| Measurement Source | Audioholics | Data-bass |
| Drivers | 6x 10" (254mm) driver | 15" (381mm) driver |
| Discontinued | - | Yes |
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Prices on this page were last checked September 8, 2026 at 6:02 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
Paradigm Signature Sub 2: $9,494.56 eBay
Pros: Independent CEA-2010 testing records 109.4 dB at 20 Hz and 123.7 dB through 40-80 Hz. The sealed enclosure with 6x 10” (254mm) driver has the headroom for demanding film bass in a large room.
Cons: The 622.3H x 603.2W x 568.2D 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 Paradigm Signature Sub 2 review and specifications →
| CEA-2010-A Average (40-80Hz) | 123.7 dB |
|---|---|
| Cabinet Color | black, wood |
| Country | Canada |
| Dimensions | 24.5"H x 23.7"W x 22.4"D (622.3 x 603.2 x 568.2 mm) |
| Drivers | 6x 10" (254mm) driver |
| Enclosure | sealed |
| Measurement Source | Audioholics |
| Output SPL at 10 Hz | 97.7 dB |
| Output SPL at 12.5 Hz | 101.2 dB |
| Output SPL at 15 Hz | 105.6 dB |
| Output SPL at 20 Hz | 109.4 dB |
| Output SPL at 25 Hz | 112.9 dB |
| Output SPL at 31.5 Hz | 116.2 dB |
| Output SPL at 40 Hz | 119.9 dB |
| Output SPL at 50 Hz | 123.2 dB |
| Output SPL at 63 Hz | 125.5 dB |
| Output SPL at 80 Hz | 126.0 dB |
| Output SPL at 100 Hz | 125.1 dB |
| Output SPL at 125 Hz | 123.3 dB |
| Warranty | 3 |
| Weight | 229.9 lbs / 104.3 kg |
- Links
- Reviews, Comparisons and Sound Samples
Reaction Audio PS-15X: $1999 Discontinued eBay
Pros: Independent CEA-2010 testing records 102.8 dB at 20 Hz and 124.6 dB through 40-80 Hz. The ported, rear enclosure with 15” (381mm) driver delivers formidable upper-bass output for movie effects and music.
Cons: 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. The 508.0H x 457.2W x 508.0D mm cabinet and 72 kg mass still require deliberate placement and calibration. Discontinued.
Full Reaction Audio PS-15X review and specifications →
| CEA-2010-A Average (40-80Hz) | 124.6 dB |
|---|---|
| Dimensions | 20"H x 18"W x 20"D (508.0 x 457.2 x 508.0 mm) |
| Discontinued | Yes |
| Drivers | 15" (381mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Data-bass |
| Output SPL at 12.5 Hz | 92.5 dB |
| Output SPL at 15 Hz | 96.9 dB |
| Output SPL at 20 Hz | 102.8 dB |
| Output SPL at 25 Hz | 108.8 dB |
| Output SPL at 31.5 Hz | 115.6 dB |
| Output SPL at 40 Hz | 121.1 dB |
| Output SPL at 50 Hz | 124.5 dB |
| Output SPL at 63 Hz | 125.8 dB |
| Output SPL at 80 Hz | 127.0 dB |
| Output SPL at 100 Hz | 127.0 dB |
| Output SPL at 125 Hz | 126.9 dB |
| Weight | 158.7 lbs / 72 kg |
- Reviews, Comparisons and Sound Samples