Short answer: the Velodyne SPL-1200 Series II for measured output, the Paradigm Defiance V12 for its sealed-design control. The Velodyne’s 12-inch sealed driver reaches 111.1dB CEA-2010-A average, second only to the pricier SVS SB-1000 PRO among compact subwoofers, though that small sealed driver limits extension below 20 Hz and its compact size is 9.5 kg (20.9 lbs). The Paradigm fills rooms with tight, ample, powerful bass while retaining the speed and control of a sealed design. The Paradigm Defiance V12 has been replaced by the Paradigm Defiance S12.

Buy the Paradigm Defiance V12 or the Velodyne Acoustics SPL-1200 Series II, whichever you find used in better condition; both are discontinued. For a new speaker, start with the Edifier T5s instead.
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Specifications Side By Side
| Paradigm Defiance V12 | Velodyne Acoustics SPL-1200 Series II | |
|---|---|---|
| Price | $513.44 Discontinued | $499 Discontinued |
| Ranked | #131 of 212 in Medium Home Subwoofers (30-75 lbs) | #14 of 73 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | ported, bottom | sealed |
| Output SPL at 25 Hz | 100.1 dB | 100.1 dB |
| Output SPL at 31.5 Hz | 105.0 dB | 105.0 dB |
| Output SPL at 40 Hz | 109.7 dB | 109.7 dB |
| Output SPL at 50 Hz | 112.1 dB | 111.8 dB |
| Output SPL at 63 Hz | 112.4 dB | 112.0 dB |
| Output SPL at 80 Hz | 110.8 dB | 111.0 dB |
| Output SPL at 100 Hz | 109.4 dB | - |
| Output SPL at 125 Hz | 108.4 dB | - |
| CEA-2010-A Average (40-80Hz) | 111.2 dB | 111.1 dB |
| Dimensions | 17.9”H x 16.5”W x 17.9”D (455.4 x 419.1 x 453.9 mm) | 14.7”H x 14.2”W x 16.4”D (374.6 x 361.9 x 415.8 mm) |
| Weight | 42.1 lbs (19.1 kg) | 20.9 lbs (9.5 kg) |
| Warranty | 3 | - |
| Cabinet Color | black | - |
| Country | Canada | United States |
| Measurement Source | Audioholics | Ilkka Rissanen |
| Amplifier Power | 120W RMS | - |
| Frequency Response | 23-200Hz | - |
| Drivers | 12” (305mm) driver | 12” (305mm) driver |
| Output SPL at 20 Hz | - | 95.2 dB |
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