RSL (Rogersound Labs) Speedwoofer 12S vs Funk Audio Classic 18.0

Last updated: September 16, 2026

Short answer: the Funk Audio Classic 18.0 on measured sound quality, the RSL (Rogersound Labs) Speedwoofer 12S on price. The Funk Audio Classic 18.0 ranks #16 of 110 subwoofers at $4893.35. The RSL (Rogersound Labs) Speedwoofer 12S ranks #98 at $800, $4093.35 cheaper.

RSL (Rogersound Labs) Speedwoofer 12S vs Funk Audio Classic 18.0

What the RSL (Rogersound Labs) Speedwoofer 12S offers: Independent CEA-2010 testing records 109.3 dB at 20 Hz and 113.2 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) driver has the headroom for demanding film bass in a large room. Watch for: The 565.1H x 479.4W x 562.0D mm cabinet and 37.2 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

What the Funk Audio Classic 18.0 offers: Independent CEA-2010 testing records 106.5 dB at 20 Hz and 127.3 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver delivers formidable upper-bass output for movie effects and music. Watch for: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 571.5H x 558.8W x 520.7D mm cabinet and 52.2 kg mass still require deliberate placement and calibration.

Buy the RSL (Rogersound Labs) Speedwoofer 12S if the price matters more than sound quality. Buy the Funk Audio Classic 18.0 if sound quality matters more than the price.

Skip the RSL (Rogersound Labs) Speedwoofer 12S if sound quality matters to you. It ranks near the bottom of the 110 subwoofers.

Want more options? Browse the full Subwoofers rankings.

Specifications Side By Side

RSL (Rogersound Labs) Speedwoofer 12S Funk Audio Classic 18.0
Price$800$4,893.35
Ranked#98 of 110 in Large Home Subwoofers (Over 75 lbs)#16 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosureported, rearsealed
Output SPL at 15 Hz104.4 dB102.3 dB
Output SPL at 20 Hz109.3 dB106.5 dB
Output SPL at 25 Hz110.9 dB111.7 dB
Output SPL at 31.5 Hz112.5 dB119.0 dB
Output SPL at 40 Hz113.4 dB124.6 dB
Output SPL at 50 Hz113.4 dB126.8 dB
Output SPL at 63 Hz113.0 dB128.4 dB
Output SPL at 80 Hz113.1 dB129.6 dB
Output SPL at 100 Hz112.2 dB130.2 dB
CEA-2010-A Average (40-80Hz)113.2 dB127.3 dB
Dimensions22.2"H x 18.9"W x 22.1"D (565.1 x 479.4 x 562.0 mm)22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)
Weight82 lbs (37.2 kg)115.1 lbs (52.2 kg)
Warranty?3
Cabinet Colorblack, whitewood, custom
CountryUnited StatesCanada
Measurement SourceErinsAudioCornerData-bass
Drivers12" (305mm) driver18" (457mm) driver
Output SPL at 10 Hz-94.6 dB
Output SPL at 12.5 Hz-98.4 dB
Output SPL at 125 Hz-130.8 dB

More worthwhile head-to-heads for Funk Audio Classic 18.0:

Prices on this page were last checked September 16, 2026 at 12:41 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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The Two Speakers In Full

RSL (Rogersound Labs) Speedwoofer 12S: $800 eBay

RSL (Rogersound Labs) Speedwoofer 12S ranking card

Pros: Independent CEA-2010 testing records 109.3 dB at 20 Hz and 113.2 dB through 40-80 Hz. The ported, rear enclosure with 12” (305mm) driver has the headroom for demanding film bass in a large room.

Cons: The 565.1H x 479.4W x 562.0D mm cabinet and 37.2 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.

Full RSL (Rogersound Labs) Speedwoofer 12S review and specifications →

CEA-2010-A Average (40-80Hz)113.2 dB
Cabinet Colorblack, white
CountryUnited States
Dimensions22.2"H x 18.9"W x 22.1"D (565.1 x 479.4 x 562.0 mm)
Drivers12" (305mm) driver
Enclosureported, rear
Measurement SourceErinsAudioCorner
Output SPL at 15 Hz104.4 dB
Output SPL at 20 Hz109.3 dB
Output SPL at 25 Hz110.9 dB
Output SPL at 31.5 Hz112.5 dB
Output SPL at 40 Hz113.4 dB
Output SPL at 50 Hz113.4 dB
Output SPL at 63 Hz113.0 dB
Output SPL at 80 Hz113.1 dB
Output SPL at 100 Hz112.2 dB
Warranty?
Weight82 lbs (37.2 kg)
Search eBay for RSL (Rogersound Labs) Speedwoofer 12S →

Funk Audio Classic 18.0: $4,893.35 eBay

Funk Audio Classic 18.0 ranking card

Pros: Independent CEA-2010 testing records 106.5 dB at 20 Hz and 127.3 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver delivers formidable upper-bass output for movie effects and music.

Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 571.5H x 558.8W x 520.7D mm cabinet and 52.2 kg mass still require deliberate placement and calibration.

Notes: Data-bass labeled this sub as ‘FW18.0’, but original name is 18.0

Full Funk Audio Classic 18.0 review and specifications →

CEA-2010-A Average (40-80Hz)127.3 dB
Cabinet Colorwood, custom
CountryCanada
Dimensions22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)
Drivers18" (457mm) driver
Enclosuresealed
Measurement SourceData-bass
Output SPL at 10 Hz94.6 dB
Output SPL at 12.5 Hz98.4 dB
Output SPL at 15 Hz102.3 dB
Output SPL at 20 Hz106.5 dB
Output SPL at 25 Hz111.7 dB
Output SPL at 31.5 Hz119.0 dB
Output SPL at 40 Hz124.6 dB
Output SPL at 50 Hz126.8 dB
Output SPL at 63 Hz128.4 dB
Output SPL at 80 Hz129.6 dB
Output SPL at 100 Hz130.2 dB
Output SPL at 125 Hz130.8 dB
Warranty3
Weight115.1 lbs (52.2 kg)
Search eBay for Funk Audio Classic 18.0 →