Rythmik F18 Review: Rated 4.1/5

Last updated: October 21, 2026

The Rythmik F18 is rated 4.1/5 for sound quality, #85 of 143 Large Home Subwoofers (Over 75 lbs). See all Subwoofers rankings for every top pick.

Rythmik F18 · Editor's rating 4.1/5, ranked #85 of 143 Large Home Subwoofers (Over 75 lbs)
Check price at Rythmik Audio ($2,344) →

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Brand: Rythmik

#85 Rythmik F18: $2,344 Rythmik Audio $2,344 eBay

Same family: the Rythmik F12 (smaller subwoofer, rated 4.1/5).

Pros: A massive sealed 18 inch subwoofer with tight, powerful bass and balanced XLR inputs, built for big home theaters. 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.

Featured on:
ReleasedNov 2017 (8 years ago)
AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)119.5 dB
Cabinet Colorblack
Coaxial InputNo
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
HDMI InputNo
InputsXLR (2), RCA (line/LFE)
Measurement SourceData-bass
Optical InputNo
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
RCA InputYes
TRS InputNo
USB InputNo
Warranty5/3
Weight115.1 lbs (52.2 kg)
XLR InputYes
Check current price at Rythmik Audio ($2,344) →Search eBay for Rythmik F18 →

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