Short answer: the Funk Audio Custom 21.0, if you are buying new. The Power Sound Audio (PSA) V3600I measures as well as it (#10 vs #12 of 143 subwoofers, 4.5/5 vs 4.5/5) but is discontinued, so only consider it used; the Funk Audio Custom 21.0 is still sold new at $6,061.91.
Buy the Funk Audio Custom 21.0 new; the Power Sound Audio (PSA) V3600I is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Subwoofers rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Funk Audio Custom 21.0 | Power Sound Audio (PSA) V3600I | |
|---|---|---|
| Price | $6,061.91 | $6,995 Discontinued |
| Ranked | #12 of 143 in Large Home Subwoofers (Over 75 lbs) | #10 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 10 Hz | 97.4 dB | - |
| Output SPL at 12.5 Hz | 101.1 dB | - |
| Output SPL at 15 Hz | 105.7 dB | - |
| Output SPL at 20 Hz | 109.8 dB | 119.4 dB |
| Output SPL at 25 Hz | 114.2 dB | 119.4 dB |
| Output SPL at 31.5 Hz | 120.4 dB | 119.4 dB |
| Output SPL at 40 Hz | 124.1 dB | 128.3 dB |
| Output SPL at 50 Hz | 126.8 dB | 128.3 dB |
| Output SPL at 63 Hz | 129.0 dB | 128.3 dB |
| Output SPL at 80 Hz | 131.0 dB | - |
| Output SPL at 100 Hz | 132.6 dB | - |
| Output SPL at 125 Hz | 133.0 dB | - |
| CEA-2010-A Average (40-80Hz) | 127.7 dB | 128.3 dB (avg of 3/4 bands) |
| Dimensions | 22.8”H x 22.2”W x 20.5”D (577.9 x 565.1 x 520.7 mm) | 44”H x 20”W x 25”D (1117.6 x 508.0 x 635.0 mm) |
| Weight | 145.1 lbs (65.8 kg) | 196 lbs (88.9 kg) |
| Warranty | 3 | 5 |
| Cabinet Color | wood, custom | - |
| Country | Canada | United States |
| Measurement Source | Data-bass | Manufacturer |
| Drivers | 21” (533mm) driver | 2x 18” (457mm) driver |
| Inputs | XLR (balanced) | - |
| XLR Input | Yes | - |
| RCA Input | No | - |
| TRS Input | No | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
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