DC Audio Level 3 M3 12 D4

12″ subwoofer · dual 4 Ω · 1,000 W RMS

Fs 35.4 HzQts 0.57Vas 1.02 ft³Xmax 0.91″

Recommended box

For a sedan, one sub, 1,000 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 volume1.09 ft³ (31 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 14 3/16″
Open sealed box in designer

Ported

Net volume2.51 ft³ (71 L)
Tuning (Fb)30 Hz
Portslot 2 15/16 × 14 5/16″, 44 3/4″ long
Port velocity at 1,000 W63 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.4 Hz
Qts0.57
Qes0.617
Qms8.33
Vas1.02 ft³
Re (one coil)≈ 3.4 Ω
Sd64.8 in²
Xmax0.91″
Vd58.7 in³ calc.
Mms173 g calc.
BL14.5 T·m calc.
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.2 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,000 W

Mounting dimensions

Ø12 1/2″cutout Ø11″mounting depth 6 3/4″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth6 3/4″
Overall diameter12 1/2″

“≈” 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 DC Audio 12″ models