Monoprice SW-15 vs Rythmik F12

Last updated: September 19, 2026

Short answer: the Monoprice SW-15 for output, the Rythmik F12 for a sealed servo design. The 15-inch ported Monoprice runs 600W RMS (800W peak) and earns a Large-room Bassaholic rating, though budget-tier build, a 30 kg (66.1 lbs) cabinet and limited dynamic headroom come with it. The Rythmik is a sealed 12-inch servo with 370W RMS and excellent value.

Monoprice SW-15 vs Rythmik F12

The case for the Monoprice SW-15: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Set against that: Budget-tier design, ported room gain dependency, 30 kg (66.1 lbs) mid-size, and limited dynamic headroom.

What the Rythmik F12 gets right: Sealed 12-inch servo with 370W RMS offers excellent value.

Buy the Monoprice SW-15. Both are rated the same for sound quality, and it costs $1064.01 less than the Rythmik F12.

Looking for alternatives? See the complete Subwoofers rankings.

Buy the Monoprice SW-15 at Amazon ($374.99) →Buy the Rythmik F12 at Rythmik Audio ($1,439) →

Specifications Side By Side

Monoprice SW-15 Rythmik F12
Price$374.99$1,120
Ranked#13 of 145 in Medium Home Subwoofers (30-75 lbs)#20 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosureported, bottomsealed
Output SPL at 15 Hz90.0 dB-
Output SPL at 20 Hz101.2 dB103.6 dB
Output SPL at 25 Hz106.3 dB106.7 dB
Output SPL at 31.5 Hz111.2 dB113.5 dB
Output SPL at 40 Hz116.0 dB118.3 dB
Output SPL at 50 Hz120.2 dB119.1 dB
Output SPL at 63 Hz120.5 dB120.4 dB
Output SPL at 80 Hz119.5 dB119.6 dB
CEA-2010-A Average (40-80Hz)119.0 dB119.3 dB
Dimensions18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm)15.7"H x 15.7"W x 17"D (400.0 x 400.0 x 431.8 mm)
Weight66.1 lbs (30.0 kg)75 lbs (34.0 kg)
Warranty15/3
Cabinet Colorblackblack
CountryUnited StatesUnited States
Measurement SourceAudioholicsBrent Butterworth
Frequency Response30-150Hz (-10dB)14Hz extension
Amplifier Power600W RMS / 800W peak370W RMS
Crossover Frequency40-150Hz, 18dB/octave-
Phase Control0° or 180°-
InputsStereo line level and speaker levelXLR (2), RCA (line/LFE)
Drivers15" (381mm) driver12" (305mm) driver
Output SPL at 16 Hz-101.0 dB
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
Buy the Monoprice SW-15 at Amazon ($374.99) →Buy the Rythmik F12 at Rythmik Audio ($1,439) →

More top alternatives to Monoprice SW-15:

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

Monoprice SW-15: $374.99 Amazon eBay

Monoprice SW-15 ranking card

Pros: 15-inch ported with 600W RMS (800W peak) delivers Large-room Bassaholic rating. Unrivaled mid-bass punch for $375. Strong output with clean control. Dual speaker-level inputs and 40-150Hz crossover for flexible hookup.

Cons: Budget-tier design, ported room gain dependency, 30 kg mid-size, and limited dynamic headroom.

Notes: Product # 41499

Full Monoprice SW-15 review and specifications →

Amplifier Power600W RMS / 800W peak
CEA-2010-A Average (40-80Hz)119.0 dB
Cabinet Colorblack
CountryUnited States
Crossover Frequency40-150Hz, 18dB/octave
Dimensions18.1"H x 21"W x 22.7"D (459.7 x 533.4 x 576.6 mm)
Drivers15" (381mm) driver
Enclosureported, bottom
Frequency Response30-150Hz (-10dB)
InputsStereo line level and speaker level
Measurement SourceAudioholics
Output SPL at 15 Hz90.0 dB
Output SPL at 20 Hz101.2 dB
Output SPL at 25 Hz106.3 dB
Output SPL at 31.5 Hz111.2 dB
Output SPL at 40 Hz116.0 dB
Output SPL at 50 Hz120.2 dB
Output SPL at 63 Hz120.5 dB
Output SPL at 80 Hz119.5 dB
Phase Control0° or 180°
Warranty1
Weight66.1 lbs (30.0 kg)
Check current price at Amazon ($374.99) →Search eBay for Monoprice SW-15 →

Rythmik F12: $1,120 Rythmik Audio eBay

Rythmik F12 ranking card

Pros: Sealed 12-inch servo with 370W RMS offers excellent value. Very musical and can disappear in small rooms. Digs to 14Hz with excellent build quality and well-braced cabinet.

Full Rythmik F12 review and specifications →

AES InputNo
Amplifier Power370W RMS
Aux InputNo
CEA-2010-A Average (40-80Hz)119.3 dB
Cabinet Colorblack
Coaxial InputNo
CountryUnited States
Dimensions15.7"H x 15.7"W x 17"D (400.0 x 400.0 x 431.8 mm)
Drivers12" (305mm) driver
Enclosuresealed
Frequency Response14Hz extension
HDMI InputNo
InputsXLR (2), RCA (line/LFE)
Measurement SourceBrent Butterworth
Optical InputNo
Output SPL at 16 Hz101.0 dB
Output SPL at 20 Hz103.6 dB
Output SPL at 25 Hz106.7 dB
Output SPL at 31.5 Hz113.5 dB
Output SPL at 40 Hz118.3 dB
Output SPL at 50 Hz119.1 dB
Output SPL at 63 Hz120.4 dB
Output SPL at 80 Hz119.6 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5/3
Weight75 lbs (34.0 kg)
XLR InputYes
Check current price at Rythmik Audio ($1,439) →Search eBay for Rythmik F12 →