DC Audio Level 4 M3 12 D2

12″ subwoofer · dual 2 Ω · 1,500 W RMS

Fs 37.9 HzQts 0.49Vas 0.97 ft³Xmax 0.93″

Recommended box

For a sedan, one sub, 1,500 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 volume0.64 ft³ (18 L)
Qtc0.78
Fc60 Hz
F3 (−3 dB, no cabin gain)58 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 5/16″
Open sealed box in designer

Ported

Net volume1.87 ft³ (53 L)
Tuning (Fb)33 Hz
Portslot 2 3/4 × 14 5/16″, 46 5/8″ long
Port velocity at 1,500 W75 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs37.9 Hz
Qts0.49
Qes0.52
Qms8.24
Vas0.97 ft³
Re (one coil)≈ 1.7 Ω
Sd64.8 in²
Xmax0.93″
Vd59.9 in³ calc.
Mms159 g calc.
BL11.1 T·m calc.
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.6 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,500 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