Short answer: a real tradeoff between driver size and amplifier headroom. The Monoprice SW-12 gives you a 12-inch ported cabinet with 400W RMS (600W peak), clean tight transients and a 112.3 dB output figure, at the cost of entry-level build and ported room interaction. The RSL Speedwoofer 10S MKII is smaller at 10 inches but brings 400W RMS with a 1020W peak XDR amplifier.
What the Monoprice SW-12 gets right: 12-inch ported with 400W RMS (600W peak) on a budget at just $230. Hits hard with clean tight transient response. The tradeoff: Entry-level build quality, ported enclosure room interaction, and lower 112.3 dB output capability.
On the RSL (Rogersound Labs) Speedwoofer 10S MKII side: 10-inch ported with 400W RMS (1020W peak) XDR amplifier.
Buy the Monoprice SW-12. It is rated higher for sound quality than the RSL (Rogersound Labs) Speedwoofer 10S MKII and costs less, so there is no real case for the other one.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Monoprice SW-12 | RSL (Rogersound Labs) Speedwoofer 10S MKII | |
|---|---|---|
| Price | $166.73 | $450 |
| Ranked | #5 of 145 in Medium Home Subwoofers (30-75 lbs) | #87 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, bottom | ported, rear |
| Output SPL at 20 Hz | 102.7 dB | 100.0 dB |
| Output SPL at 25 Hz | 111.1 dB | 105.0 dB |
| Output SPL at 31.5 Hz | 115.2 dB | 107.7 dB |
| Output SPL at 40 Hz | 119.0 dB | 110.3 dB |
| Output SPL at 50 Hz | 119.7 dB | 112.9 dB |
| Output SPL at 63 Hz | 122.9 dB | 113.0 dB |
| Output SPL at 80 Hz | 123.0 dB | 112.1 dB |
| CEA-2010-A Average (40-80Hz) | 121.2 dB | 112.1 dB |
| Dimensions | 14.9"H x 18.3"W x 19.1"D (378.5 x 464.8 x 485.1 mm) | 15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm) |
| Weight | 50.7 lbs (23.0 kg) | 40.6 lbs (18.4 kg) |
| Warranty | 1 | 5/2 |
| Cabinet Color | black | black, white |
| Country | United States | United States |
| Measurement Source | Brent Butterworth | Audioholics |
| Frequency Response | 35-150Hz, -10dB | 21-200Hz |
| Amplifier Power | 400W RMS / 600W peak | 400W RMS |
| Drivers | 12" (305mm) driver | 10" (254mm) driver |
| Output SPL at 16 Hz | 90.6 dB | - |
| Output SPL at 15 Hz | - | 89.0 dB |
| Output SPL at 100 Hz | - | 111.4 dB |
| Output SPL at 125 Hz | - | 110.7 dB |
Related Speaker Comparisons
More top alternatives to Monoprice SW-12:
- JTR Speakers Captivator 212PRO vs Monoprice SW-12
- MartinLogan Dynamo 1600X vs Monoprice SW-12
- HSU Research ULS-15 MK2 vs Monoprice SW-12
- Monoprice SW-12 vs Power Sound Audio (PSA) XV15
- Monoprice SW-12 vs Monoprice SW-15
Prices on this page were last checked September 23, 2026 at 11:24 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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The Two Speakers In Full
Monoprice SW-12: $166.73 Amazon eBay
Pros: 12-inch ported with 400W RMS (600W peak) on a budget at just $167. 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
Full Monoprice SW-12 review and specifications →
| 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) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Monoprice SW-12 vs HSU Research ULS-15 MK2
- Monoprice SW-12 vs MartinLogan Dynamo 1600X
- Monoprice SW-12 vs JTR Speakers Captivator 212PRO
- Monoprice SW-12 vs Power Sound Audio (PSA) XV15
- Monoprice SW-12 vs Monoprice SW-15
- Monoprice SW-12 vs SVS SB-3000
- Monoprice SW-12 vs Klipsch SPL-120
- Monoprice SW-12 vs Rythmik F12
- See all 19 comparisons
RSL (Rogersound Labs) Speedwoofer 10S MKII: $450 RSL (Rogersound Labs) eBay
Pros: 10-inch ported with 400W RMS (1020W peak) XDR amplifier. DSP with dual modes (LFE mode for 22Hz extension, Music mode for tight response). Quick tight musical bass at excellent $499 price. Wireless receiver built-in.
Full RSL (Rogersound Labs) Speedwoofer 10S MKII review and specifications →
| Amplifier Power | 400W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 112.1 dB |
| Cabinet Color | black, white |
| Country | United States |
| Dimensions | 15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm) |
| Drivers | 10" (254mm) driver |
| Enclosure | ported, rear |
| Frequency Response | 21-200Hz |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 89.0 dB |
| Output SPL at 20 Hz | 100.0 dB |
| Output SPL at 25 Hz | 105.0 dB |
| Output SPL at 31.5 Hz | 107.7 dB |
| Output SPL at 40 Hz | 110.3 dB |
| Output SPL at 50 Hz | 112.9 dB |
| Output SPL at 63 Hz | 113.0 dB |
| Output SPL at 80 Hz | 112.1 dB |
| Output SPL at 100 Hz | 111.4 dB |
| Output SPL at 125 Hz | 110.7 dB |
| Warranty | 5/2 |
| Weight | 40.6 lbs (18.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs Klipsch R-121SW
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs Monitor Audio RXW12
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs Monoprice SSW-10
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs Monoprice Monolith M-10 V2
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs BIC America PL-300
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs SVS PB-1000 PRO
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs SVS SB-2000
- RSL (Rogersound Labs) Speedwoofer 10S MKII vs Kef KC62
- See all 17 comparisons