The Monoprice SW-12 is rated 4.2/5 for sound quality, #6 of 212 Medium Home Subwoofers (30-75 lbs). See all Subwoofers rankings for every top pick.
Prices on this page were last checked October 28, 2026 at 1:06 AM 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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Brand: Monoprice
#6 Monoprice SW-12: $364.99 Amazon $364.99 eBay
Same family: the Monoprice SW-10 (smaller subwoofer, ranked lower, estimated 3.7/5) and the Monoprice SW-15 (larger subwoofer, ranked lower, rated 4.1/5).
Pros: A budget 12 inch subwoofer that hits hard with clean, tight bass and easy connections. 12-inch ported with 400W RMS (600W peak) on a budget at just $365. Hits hard with clean tight transient response. Variable crossover and volume controls for setup flexibility. Speaker-level and line-level inputs for easy integration.
Cons: Entry-level build quality, ported enclosure room interaction, and lower 112.3 dB output capability.
Notes: Product # 41498
| Released | Around 2021 (about 5 years ago) |
|---|---|
| Amplifier Power | 400W RMS / 600W peak |
| CEA-2010-A Average (40-80Hz) | 121.2 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 14.9”H x 18.3”W x 19.1”D (378.5 x 464.8 x 485.1 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | ported, bottom |
| Frequency Response | 35-150Hz, -10dB |
| Measurement Source | Brent Butterworth |
| Output SPL at 16 Hz | 90.6 dB |
| Output SPL at 20 Hz | 102.7 dB |
| Output SPL at 25 Hz | 111.1 dB |
| Output SPL at 31.5 Hz | 115.2 dB |
| Output SPL at 40 Hz | 119.0 dB |
| Output SPL at 50 Hz | 119.7 dB |
| Output SPL at 63 Hz | 122.9 dB |
| Output SPL at 80 Hz | 123.0 dB |
| Warranty | 1 |
| Weight | 50.7 lbs (23.0 kg) |
Price history
$364.99 is 59 percent above its typical $230 over the last three months, and it has been as low as $166.73 (Sep 2026). It may be worth waiting for a sale.
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- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
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