Monoprice SW-12 vs Rythmik F12

Last updated: October 27, 2026

Short answer: the Monoprice SW-12 for output on a budget, the Rythmik F12 for a sealed servo design. The SW-12 is a 12-inch ported sub with 400W RMS (600W peak) and a 112.3 dB output figure, but entry-level build and ported room interaction are the tradeoffs. The Rythmik is a sealed 12-inch servo with 370W RMS and excellent value.

Monoprice SW-12 vs Rythmik F12

Buy the Monoprice SW-12. It is rated higher for sound quality than the Rythmik F12 and costs less, which makes it the one to get unless you need something the other one does better.

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Specifications Side By Side

Monoprice SW-12 Rythmik F12
Price$364.99$1,439
Ranked#6 of 212 in Medium Home Subwoofers (30-75 lbs)#21 of 212 in Medium Home Subwoofers (30-75 lbs)
Enclosureported, bottomsealed
Output SPL at 20 Hz102.7 dB103.6 dB
Output SPL at 25 Hz111.1 dB106.7 dB
Output SPL at 31.5 Hz115.2 dB113.5 dB
Output SPL at 40 Hz119.0 dB118.3 dB
Output SPL at 50 Hz119.7 dB119.1 dB
Output SPL at 63 Hz122.9 dB120.4 dB
Output SPL at 80 Hz123.0 dB119.6 dB
CEA-2010-A Average (40-80Hz)121.2 dB119.3 dB
Dimensions14.9”H x 18.3”W x 19.1”D (378.5 x 464.8 x 485.1 mm)15.7”H x 15.7”W x 17”D (400.0 x 400.0 x 431.8 mm)
Weight50.7 lbs (23.0 kg)75 lbs (34.0 kg)
Warranty15/3
Cabinet Colorblackblack
CountryUnited StatesUnited States
Measurement SourceBrent ButterworthBrent Butterworth
Frequency Response35-150Hz, -10dB14Hz extension
Amplifier Power400W RMS / 600W peak370W RMS
Drivers12” (305mm) driver12” (305mm) driver
Output SPL at 16 Hz90.6 dB101.0 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

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