Rythmik F18 vs Rythmik FV15HP

Last updated: September 17, 2026

Short answer: the Rythmik FV15HP. It ranks #48 of 110 subwoofers by sound quality, rated 4.2/5, at $2127; the Rythmik F18 ranks #69, rated 4.1/5, and costs $2344, so there is little reason to consider the other one.

Rythmik F18 vs Rythmik FV15HP

On the Rythmik FV15HP side: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more. The tradeoff: Premium price ($1,770), ported design room gain dependency, and mid-to-large 52 kg (114.6 lbs) footprint.

Buy the Rythmik FV15HP. It is rated higher for sound quality than the Rythmik F18 and costs less, so the other one has nothing left to offer.

Looking for alternatives? See the complete Subwoofers rankings.

Buy the Rythmik FV15HP at Rythmik Audio ($2,127) →Buy the Rythmik F18 at Rythmik Audio ($2,344) →

Specifications Side By Side

Rythmik F18 Rythmik FV15HP
Price$1,850$1,770
Ranked#69 of 110 in Large Home Subwoofers (Over 75 lbs)#48 of 110 in Large Home Subwoofers (Over 75 lbs)
Enclosuresealedported, front
Output SPL at 10 Hz93.7 dB-
Output SPL at 12.5 Hz97.4 dB92.8 dB
Output SPL at 15 Hz102.0 dB105.1 dB
Output SPL at 20 Hz106.2 dB111.1 dB
Output SPL at 25 Hz110.9 dB116.1 dB
Output SPL at 31.5 Hz114.3 dB120.0 dB
Output SPL at 40 Hz117.1 dB122.5 dB
Output SPL at 50 Hz119.1 dB122.1 dB
Output SPL at 63 Hz120.5 dB121.8 dB
Output SPL at 80 Hz121.2 dB121.4 dB
Output SPL at 100 Hz121.4 dB121.2 dB
Output SPL at 125 Hz121.4 dB121.1 dB
CEA-2010-A Average (40-80Hz)119.5 dB122.0 dB
Dimensions20.5"H x 20.5"W x 21"D (520.7 x 520.7 x 533.4 mm)24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm)
Weight115.1 lbs (52.2 kg)115.1 lbs (52.2 kg)
Warranty5/35/3
Cabinet Colorblackblack, white
CountryUnited StatesUnited States
Measurement SourceData-bassAudioholics
Drivers18" (457mm) driver15" (381mm) driver
InputsXLR (2), RCA (line/LFE)XLR (2), RCA (line/LFE)
XLR InputYesYes
RCA InputYesYes
TRS InputNoNo
Optical InputNoNo
Coaxial InputNoNo
USB InputNoNo
HDMI InputNoNo
AES InputNoNo
Aux InputNoNo
Buy the Rythmik FV15HP at Rythmik Audio ($2,127) →Buy the Rythmik F18 at Rythmik Audio ($2,344) →

More worthwhile head-to-heads for Rythmik FV15HP:

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

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 →

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 →

Rythmik FV15HP: $1,770 Rythmik Audio eBay

Rythmik FV15HP ranking card

Pros: 15-inch ported driver reaches 122.0dB CEA-2010-A average, matching the output of subwoofers costing significantly more.

Cons: Premium price ($2127), ported design room gain dependency, and mid-to-large 52 kg footprint.

Full Rythmik FV15HP review and specifications →

AES InputNo
Aux InputNo
CEA-2010-A Average (40-80Hz)122.0 dB
Cabinet Colorblack, white
Coaxial InputNo
CountryUnited States
Dimensions24.5"H x 18.2"W x 24.2"D (622.3 x 463.5 x 615.9 mm)
Drivers15" (381mm) driver
Enclosureported, front
HDMI InputNo
InputsXLR (2), RCA (line/LFE)
Measurement SourceAudioholics
Optical InputNo
Output SPL at 12.5 Hz92.8 dB
Output SPL at 15 Hz105.1 dB
Output SPL at 20 Hz111.1 dB
Output SPL at 25 Hz116.1 dB
Output SPL at 31.5 Hz120.0 dB
Output SPL at 40 Hz122.5 dB
Output SPL at 50 Hz122.1 dB
Output SPL at 63 Hz121.8 dB
Output SPL at 80 Hz121.4 dB
Output SPL at 100 Hz121.2 dB
Output SPL at 125 Hz121.1 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5/3
Weight115.1 lbs (52.2 kg)
XLR InputYes
Check current price at Rythmik Audio ($2,127) →Search eBay for Rythmik FV15HP →