Dayton Audio UM12-22

12″ subwoofer · dual 2 Ω · 600 W RMS

Fs 26.2 HzQts 0.59Vas 1.65 ft³Xmax 0.75″

Recommended box

For a sedan, one sub, 600 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

Net volume1.73 ft³ (49 L)
Qtc0.83
Fc37 Hz
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)26 Hz
Portslot 1 15/16 × 14 5/16″, 33 11/16″ long
Port velocity at 600 W66 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.2 Hz
Qts0.59
Qes0.71
Qms3.62
Vas1.65 ft³
Re (one coil)1.6 Ω
Sd76.1 in²
Xmax0.75″
Vd56.9 in³ calc.
Mms269 g calc.
BL10 T·m calc.
EBP37 — suits sealed calc.
Sensitivity, 1 W / 1 m82.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power600 W

Mounting dimensions

Ø12 3/8″cutout Ø11 1/4″mounting depth 6 1/4″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth6 1/4″
Overall diameter12 3/8″

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

Other Dayton Audio 12″ models