Short answer: the Monoprice SW-15. It ranks #14 of 212 subwoofers by sound quality (rated 4.1/5) at $499.99 and is still sold new; the HSU Research VTF-3 MK4 ranks #57 (rated 3.8/5) and is discontinued, so it is only an option used. The HSU Research VTF-3 MK4’s replacement, the HSU Research VTF-3 MK5 HP, is rated 4.2/5 at $1,049.
Why pick the Monoprice SW-15: A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room. The catch: Budget-tier design, ported room gain dependency, 66.1 lbs (30 kg) mid-size, and limited dynamic headroom.
Why pick the HSU Research VTF-3 MK4: A ported 12 inch subwoofer with big output and deep extension for the money, backed by a long warranty, now discontinued. Watch for: At 74.1 lbs (33.6 kg) and 546.1H x 431.8W x 635.0D mm it is a large, deep cabinet that needs real floor space.
Buy the Monoprice SW-15. It is rated higher for sound quality; the HSU Research VTF-3 MK4 is no longer sold new.
Still deciding? The full Subwoofers rankings cover every ranked option.
A big 15 inch subwoofer with powerful, punchy bass at a budget price, great for movies in a large room.
A ported 12 inch subwoofer with big output and deep extension for the money, backed by a long warranty, now discontinued.
Prices on this page were last checked October 29, 2026 at 4:42 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
| Monoprice SW-15 | HSU Research VTF-3 MK4 | |
|---|---|---|
| Price | $499.99 | $1,299 Discontinued |
| Ranked | #14 of 212 in Medium Home Subwoofers (30-75 lbs) | #57 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, rear |
| Output SPL at 15 Hz | 90.0 dB | - |
| Output SPL at 20 Hz | 101.2 dB | 105.4 dB |
| Output SPL at 25 Hz | 106.3 dB | 110.3 dB |
| Output SPL at 31.5 Hz | 111.2 dB | 111.7 dB |
| Output SPL at 40 Hz | 116.0 dB | 114.0 dB |
| Output SPL at 50 Hz | 120.2 dB | 115.7 dB |
| Output SPL at 63 Hz | 120.5 dB | 115.8 dB |
| Output SPL at 80 Hz | 119.5 dB | 115.7 dB |
| CEA-2010-A Average (40-80Hz) | 119.0 dB | 115.3 dB |
| Dimensions | 18.1”H x 21”W x 22.7”D (459.7 x 533.4 x 576.6 mm) | 21.5”H x 17”W x 25”D (546.1 x 431.8 x 635.0 mm) |
| Weight | 66.1 lbs (30.0 kg) | 74.1 lbs (33.6 kg) |
| Warranty | 1 | 7/2 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Audioholics | Manufacturer |
| Frequency Response | 30-150Hz (-10dB) | 18-90Hz |
| Amplifier Power | 600W RMS / 800W peak | 350W continuous (1400W short term) |
| Crossover Frequency | 40-150Hz, 18dB/octave | - |
| Phase Control | 0° or 180° | - |
| Inputs | Stereo line level and speaker level | - |
| Drivers | 15” (381mm) driver | 12” (305mm) driver |
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