Short answer: the Power Sound Audio XV15SEICE-BASE for output, the Paradigm Defiance X12 for efficient power. The PSA’s 15-inch ported driver returns a 119.1dB CEA-2010-A average, and its ICE amplification keeps the cabinet compact and efficient. The Defiance X12 answers with a 12-inch ported design and 650W RMS that the source calls powerful with vanishing distortion, though it gives up that output edge.

Buy the Paradigm Defiance X12 or the Power Sound Audio (PSA) XV15SEICE-BASE, whichever you find used in better condition; both are discontinued. For a new speaker, start with the HSU Research ULS-15 MK2 instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
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Specifications Side By Side
| Paradigm Defiance X12 | Power Sound Audio (PSA) XV15SEICE-BASE | |
|---|---|---|
| Price | $1,314.63 Discontinued | $1,895 Discontinued |
| Ranked | #11 of 212 in Medium Home Subwoofers (30-75 lbs) | #13 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, rear |
| Output SPL at 20 Hz | 95.5 dB | 110.6 dB |
| Output SPL at 25 Hz | 108.1 dB | 110.6 dB |
| Output SPL at 31.5 Hz | 112.8 dB | 110.6 dB |
| Output SPL at 40 Hz | 116.1 dB | 119.1 dB |
| Output SPL at 50 Hz | 119.0 dB | 119.1 dB |
| Output SPL at 63 Hz | 120.7 dB | 119.1 dB |
| Output SPL at 80 Hz | 120.8 dB | - |
| Output SPL at 100 Hz | 120.2 dB | - |
| Output SPL at 125 Hz | 119.3 dB | - |
| CEA-2010-A Average (40-80Hz) | 119.2 dB | 119.1 dB (avg of 3/4 bands) |
| Dimensions | 19.4”H x 18”W x 19.4”D (493.5 x 457.2 x 493.5 mm) | 23”H x 17”W x 22”D (584.2 x 431.8 x 558.8 mm) |
| Weight | 61.9 lbs (28.1 kg) | 75 lbs (34.0 kg) |
| Warranty | 3 | 5 |
| Cabinet Color | black | - |
| Country | Canada | United States |
| Measurement Source | Audioholics | Manufacturer |
| Frequency Response | 20-230Hz, ±3dB | 21-200Hz |
| Amplifier Power | 650W RMS / 1300W peak | 500W RMS / 1000W peak |
| Crossover Frequency | 30-120Hz adjustable | - |
| Features | ARC microphone for room correction, ART surround | - |
| Drivers | 12” (305mm) driver | 15” (381mm) driver |
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