Short answer: the Monoprice Monolith M-10 V2 for THX-certified extension, the RSL Speedwoofer 10S MKII for peak amplifier power. The M-10 V2 is a 10-inch THX-certified ported sub with 500W RMS that reaches 17-20Hz, but it costs $236.10 more. The RSL pairs a 10-inch ported cabinet with a 400W RMS (1020W peak) XDR amplifier, so it is the cheaper route to high peak power.
Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII. It is rated higher for sound quality than the Monoprice Monolith M-10 V2 and costs less, so only choose the other one for a particular feature it does better.
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Specifications Side By Side
| Monoprice Monolith M-10 V2 | RSL (Rogersound Labs) Speedwoofer 10S MKII | |
|---|---|---|
| Price | $735.10 | $499 |
| Ranked | #161 of 212 in Medium Home Subwoofers (30-75 lbs) | #124 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | ported, rear |
| Output SPL at 15 Hz | 93.9 dB | 89.0 dB |
| Output SPL at 20 Hz | 104.8 dB | 100.0 dB |
| Output SPL at 25 Hz | 108.5 dB | 105.0 dB |
| Output SPL at 31.5 Hz | 109.3 dB | 107.7 dB |
| Output SPL at 40 Hz | 109.7 dB | 110.3 dB |
| Output SPL at 50 Hz | 110.1 dB | 112.9 dB |
| Output SPL at 63 Hz | 110.6 dB | 113.0 dB |
| Output SPL at 80 Hz | 110.9 dB | 112.1 dB |
| Output SPL at 100 Hz | 111.2 dB | 111.4 dB |
| Output SPL at 125 Hz | 111.5 dB | 110.7 dB |
| CEA-2010-A Average (40-80Hz) | 110.3 dB | 112.1 dB |
| Dimensions | 20.9”H x 15”W x 18.9”D (530.9 x 381.0 x 480.1 mm) | 15.5”H x 15”W x 15.7”D (393.7 x 381.0 x 400.0 mm) |
| Weight | 72.5 lbs (32.9 kg) | 40.6 lbs (18.4 kg) |
| Warranty | 5 | 5/2 |
| Cabinet Color | black | black, white |
| Country | United States | United States |
| Measurement Source | Manufacturer | Audioholics |
| Amplifier Power | 500W RMS | 400W RMS |
| Frequency Response | 17-20Hz | 21-200Hz |
| Drivers | 10” (254mm) driver | 10” (254mm) driver |
| Inputs | XLR, RCA, XLR passthrough out | - |
| 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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