RSL (Rogersound Labs) Speedwoofer 10S MKII vs Rythmik F12

Last updated: September 19, 2026

Short answer: the Rythmik F12 by a wide margin. It ranks #20 of 145 as a sealed 12-inch servo sub with a 370W RMS amplifier that the source calls excellent value. The RSL Speedwoofer 10S MKII is a 10-inch ported design with a 400W RMS (1020W peak) XDR amplifier, but it sits far lower at #87 of 145.

RSL (Rogersound Labs) Speedwoofer 10S MKII vs Rythmik F12

On the RSL (Rogersound Labs) Speedwoofer 10S MKII side: 10-inch ported with 400W RMS (1020W peak) XDR amplifier.

The case for the Rythmik F12: Sealed 12-inch servo with 370W RMS offers excellent value.

Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII if the price is the priority over sound quality, or the Rythmik F12 if sound quality is the priority over the price.

Want more options? Browse the full Subwoofers rankings.

Buy the Rythmik F12 at Rythmik Audio ($1,439) →Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

Specifications Side By Side

RSL (Rogersound Labs) Speedwoofer 10S MKII Rythmik F12
Price$450$1,120
Ranked#87 of 145 in Medium Home Subwoofers (30-75 lbs)#20 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosureported, rearsealed
Output SPL at 15 Hz89.0 dB-
Output SPL at 20 Hz100.0 dB103.6 dB
Output SPL at 25 Hz105.0 dB106.7 dB
Output SPL at 31.5 Hz107.7 dB113.5 dB
Output SPL at 40 Hz110.3 dB118.3 dB
Output SPL at 50 Hz112.9 dB119.1 dB
Output SPL at 63 Hz113.0 dB120.4 dB
Output SPL at 80 Hz112.1 dB119.6 dB
Output SPL at 100 Hz111.4 dB-
Output SPL at 125 Hz110.7 dB-
CEA-2010-A Average (40-80Hz)112.1 dB119.3 dB
Dimensions15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm)15.7"H x 15.7"W x 17"D (400.0 x 400.0 x 431.8 mm)
Weight40.6 lbs (18.4 kg)75 lbs (34.0 kg)
Cabinet Colorblack, whiteblack
CountryUnited StatesUnited States
Measurement SourceAudioholicsBrent Butterworth
Amplifier Power400W RMS370W RMS
Frequency Response21-200Hz14Hz extension
Drivers10" (254mm) driver12" (305mm) driver
Warranty5/25/3
Output SPL at 16 Hz-101.0 dB
Inputs-XLR (2), RCA (line/LFE)
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
Buy the Rythmik F12 at Rythmik Audio ($1,439) →Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

More top alternatives to Rythmik F12:

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

RSL (Rogersound Labs) Speedwoofer 10S MKII: $450 RSL (Rogersound Labs) eBay

RSL (Rogersound Labs) Speedwoofer 10S MKII ranking card

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 Power400W RMS
CEA-2010-A Average (40-80Hz)112.1 dB
Cabinet Colorblack, white
CountryUnited States
Dimensions15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm)
Drivers10" (254mm) driver
Enclosureported, rear
Frequency Response21-200Hz
Measurement SourceAudioholics
Output SPL at 15 Hz89.0 dB
Output SPL at 20 Hz100.0 dB
Output SPL at 25 Hz105.0 dB
Output SPL at 31.5 Hz107.7 dB
Output SPL at 40 Hz110.3 dB
Output SPL at 50 Hz112.9 dB
Output SPL at 63 Hz113.0 dB
Output SPL at 80 Hz112.1 dB
Output SPL at 100 Hz111.4 dB
Output SPL at 125 Hz110.7 dB
Warranty5/2
Weight40.6 lbs (18.4 kg)
Check current price at RSL (Rogersound Labs) ($499) →Search eBay for RSL (Rogersound Labs) Speedwoofer 10S MKII →

Rythmik F12: $1,120 Rythmik Audio eBay

Rythmik F12 ranking card

Pros: Sealed 12-inch servo with 370W RMS offers excellent value. Very musical and can disappear in small rooms. Digs to 14Hz with excellent build quality and well-braced cabinet.

Full Rythmik F12 review and specifications →

AES InputNo
Amplifier Power370W RMS
Aux InputNo
CEA-2010-A Average (40-80Hz)119.3 dB
Cabinet Colorblack
Coaxial InputNo
CountryUnited States
Dimensions15.7"H x 15.7"W x 17"D (400.0 x 400.0 x 431.8 mm)
Drivers12" (305mm) driver
Enclosuresealed
Frequency Response14Hz extension
HDMI InputNo
InputsXLR (2), RCA (line/LFE)
Measurement SourceBrent Butterworth
Optical InputNo
Output SPL at 16 Hz101.0 dB
Output SPL at 20 Hz103.6 dB
Output SPL at 25 Hz106.7 dB
Output SPL at 31.5 Hz113.5 dB
Output SPL at 40 Hz118.3 dB
Output SPL at 50 Hz119.1 dB
Output SPL at 63 Hz120.4 dB
Output SPL at 80 Hz119.6 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5/3
Weight75 lbs (34.0 kg)
XLR InputYes
Check current price at Rythmik Audio ($1,439) →Search eBay for Rythmik F12 →