Short answer: the Klipsch SPL-120. It ranks #19 of 212 subwoofers by sound quality, rated 4.1/5, at $429.99; the RSL (Rogersound Labs) Speedwoofer 10S MKII ranks #124, rated 3.6/5, and costs $499, so there is little reason to consider the other one.
Why pick the RSL (Rogersound Labs) Speedwoofer 10S MKII: A 10 inch ported subwoofer with a strong amplifier, separate movie and music modes, and a built in wireless receiver. Watch for: The ported cabinet is big and heavy for a 10 inch subwoofer, at 40.6 lbs (18.4 kg) and about 39 x 38 x 40 cm, and its rear port needs some space from the wall.
The Klipsch SPL-120 is the better-sounding pick. An affordable 12 inch ported subwoofer with room filling, clean bass and optional wireless connection. Watch for: Port chuffing is the known flaw: testers could not run it past about 60 to 70% volume before the noise became bothersome, a problem Klipsch fixed in the newer Klipsch RP-1200SW.
Buy the Klipsch SPL-120. It is rated higher for sound quality than the RSL (Rogersound Labs) Speedwoofer 10S MKII and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Subwoofers rankings.
A 10 inch ported subwoofer with a strong amplifier, separate movie and music modes, and a built in wireless receiver.
An affordable 12 inch ported subwoofer with room filling, clean bass and optional wireless connection.
Prices on this page were last checked October 31, 2026 at 7:11 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| RSL (Rogersound Labs) Speedwoofer 10S MKII | Klipsch SPL-120 | |
|---|---|---|
| Price | $499 | $429.99 |
| Ranked | #124 of 212 in Medium Home Subwoofers (30-75 lbs) | #19 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, rear | ported, front |
| Output SPL at 15 Hz | 89.0 dB | - |
| Output SPL at 20 Hz | 100.0 dB | 97.9 dB |
| Output SPL at 25 Hz | 105.0 dB | 108.2 dB |
| Output SPL at 31.5 Hz | 107.7 dB | 113.5 dB |
| Output SPL at 40 Hz | 110.3 dB | 116.8 dB |
| Output SPL at 50 Hz | 112.9 dB | 119.8 dB |
| Output SPL at 63 Hz | 113.0 dB | 120.9 dB |
| Output SPL at 80 Hz | 112.1 dB | 121.2 dB |
| Output SPL at 100 Hz | 111.4 dB | - |
| Output SPL at 125 Hz | 110.7 dB | - |
| CEA-2010-A Average (40-80Hz) | 112.1 dB | 119.7 dB |
| Dimensions | 15.5”H x 15”W x 15.7”D (393.7 x 381.0 x 400.0 mm) | 17.7”H x 14.7”W x 19.9”D (450.8 x 372.9 x 504.7 mm) |
| Weight | 40.6 lbs (18.4 kg) | 45 lbs (20.4 kg) |
| Cabinet Color | black, white | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Brent Butterworth |
| Amplifier Power | 400W RMS | 300W RMS |
| Frequency Response | 21-200Hz | 24-125Hz |
| Drivers | 10” (254mm) driver | 12” (305mm) driver |
| Warranty | 5/2 | 5/2 |
| Output SPL at 16 Hz | - | 87.2 dB |
Related Speaker Comparisons
More top alternatives to Klipsch SPL-120: