Rythmik F18 vs Funk Audio Classic 18.0

Last updated: September 16, 2026

Short answer: the Funk Audio Classic 18.0 on measured sound quality, the Rythmik F18 on price. The Funk Audio Classic 18.0 ranks #16 of 110 subwoofers at $4893.35. The Rythmik F18 ranks #69 at $2344, $2549.35 cheaper.

Rythmik F18 vs Funk Audio Classic 18.0

What the Rythmik F18 offers: Independent CEA-2010 testing records 106.2 dB at 20 Hz and 119.5 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room. Watch for: The 520.7H x 520.7W x 533.4D mm cabinet and 52.2 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

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 Rythmik F18 if the price matters more than sound quality. Buy the Funk Audio Classic 18.0 if sound quality matters more than the price.

Want more options? Browse the full Subwoofers rankings.

Buy the Rythmik F18 at Rythmik Audio ($2,344) →

Specifications Side By Side

Rythmik F18 Funk Audio Classic 18.0
Price$1,850$4,893.35
Ranked#69 of 110 in Large Home Subwoofers (Over 75 lbs)#16 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedsealed
Output SPL at 10 Hz93.7 dB94.6 dB
Output SPL at 12.5 Hz97.4 dB98.4 dB
Output SPL at 15 Hz102.0 dB102.3 dB
Output SPL at 20 Hz106.2 dB106.5 dB
Output SPL at 25 Hz110.9 dB111.7 dB
Output SPL at 31.5 Hz114.3 dB119.0 dB
Output SPL at 40 Hz117.1 dB124.6 dB
Output SPL at 50 Hz119.1 dB126.8 dB
Output SPL at 63 Hz120.5 dB128.4 dB
Output SPL at 80 Hz121.2 dB129.6 dB
Output SPL at 100 Hz121.4 dB130.2 dB
Output SPL at 125 Hz121.4 dB130.8 dB
CEA-2010-A Average (40-80Hz)119.5 dB127.3 dB
Dimensions20.5"H x 20.5"W x 21"D (520.7 x 520.7 x 533.4 mm)22.5"H x 22"W x 20.5"D (571.5 x 558.8 x 520.7 mm)
Weight115.1 lbs (52.2 kg)115.1 lbs (52.2 kg)
Warranty5/33
Cabinet Colorblackwood, custom
CountryUnited StatesCanada
Measurement SourceData-bassData-bass
Drivers18" (457mm) driver18" (457mm) driver
Buy the Rythmik F18 at Rythmik Audio ($2,344) →

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

Rythmik F18: $1,850 Rythmik Audio eBay

Rythmik F18 ranking card

Pros: Independent CEA-2010 testing records 106.2 dB at 20 Hz and 119.5 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.

Cons: The 520.7H x 520.7W x 533.4D mm cabinet and 52.2 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks.

Full Rythmik F18 review and specifications →

CEA-2010-A Average (40-80Hz)119.5 dB
Cabinet Colorblack
CountryUnited States
Dimensions20.5"H x 20.5"W x 21"D (520.7 x 520.7 x 533.4 mm)
Drivers18" (457mm) driver
Enclosuresealed
Measurement SourceData-bass
Output SPL at 10 Hz93.7 dB
Output SPL at 12.5 Hz97.4 dB
Output SPL at 15 Hz102.0 dB
Output SPL at 20 Hz106.2 dB
Output SPL at 25 Hz110.9 dB
Output SPL at 31.5 Hz114.3 dB
Output SPL at 40 Hz117.1 dB
Output SPL at 50 Hz119.1 dB
Output SPL at 63 Hz120.5 dB
Output SPL at 80 Hz121.2 dB
Output SPL at 100 Hz121.4 dB
Output SPL at 125 Hz121.4 dB
Warranty5/3
Weight115.1 lbs (52.2 kg)
Check current price at Rythmik Audio ($2,344) →Search eBay for Rythmik F18 →

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 →