Short answer: the HSU Research VTF-3 MK5 HP, if you are buying new. The Monoprice Monolith M-15 V2 measures as well as it (#71 vs #59 of 143 subwoofers, 4.2/5 vs 4.2/5) but is discontinued, so only consider it used; the HSU Research VTF-3 MK5 HP is still sold new at $1,049.
Buy the HSU Research VTF-3 MK5 HP new; the Monoprice Monolith M-15 V2 is no longer sold new, so it only makes sense as a used find.
Still deciding? The full Subwoofers rankings cover every ranked option.
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Specifications Side By Side
| HSU Research VTF-3 MK5 HP | Monoprice Monolith M-15 V2 | |
|---|---|---|
| Price | $1,049.00 | $1,500 Discontinued |
| Ranked | #59 of 143 in Large Home Subwoofers (Over 75 lbs) | #71 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, front |
| Output SPL at 15 Hz | 100.8 dB | 106.3 dB |
| Output SPL at 20 Hz | 108.2 dB | 112.6 dB |
| Output SPL at 25 Hz | 113.4 dB | 116.6 dB |
| Output SPL at 31.5 Hz | 118.2 dB | 119.5 dB |
| Output SPL at 40 Hz | 121.9 dB | 120.9 dB |
| Output SPL at 50 Hz | 122.3 dB | 120.6 dB |
| Output SPL at 63 Hz | 121.1 dB | 120.0 dB |
| Output SPL at 80 Hz | 120.4 dB | 118.7 dB |
| CEA-2010-A Average (40-80Hz) | 121.4 dB | 120.0 dB |
| Dimensions | 25”H x 17.2”W x 24”D (635.0 x 438.1 x 609.6 mm) | 28.7”H x 17.7”W x 26.8”D (729.0 x 449.6 x 680.7 mm) |
| Weight | 85.1 lbs (38.6 kg) | 132.9 lbs (60.3 kg) |
| Warranty | 7/2(+3) | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Manufacturer | Manufacturer |
| Drivers | 15” (381mm) driver | 15” (381mm) driver |
| Output SPL at 12.5 Hz | - | 91.0 dB |
| Output SPL at 100 Hz | - | 120.1 dB |
| Output SPL at 125 Hz | - | 120.2 dB |
| Inputs | - | XLR, RCA |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| 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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