DC Audio XL-SPL 12 D4

12″ subwoofer · dual 4 Ω · 2,200 W RMS

Fs 38.5 HzQts 0.39Vas 0.91 ft³Xmax 1.02″

Recommended box

For a sedan, one sub, 2,200 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 volume0.85 ft³ (24 L)
Qtc0.56
Fc55 Hz
F3 (−3 dB, no cabin gain)75 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 9/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)35 Hz
Portround port Ø2 1/2″, 5 11/16″ long
Port velocity at 2,200 W661 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)20 3/8″ × 15 3/4″ × 11 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.5 Hz
Qts0.39
Qes0.403
Qms12.92
Vas0.91 ft³
Re (one coil)≈ 3.4 Ω
Sd76.6 in²
Xmax1.02″
Vd78.4 in³ calc.
Mms229 g calc.
BL21.6 T·m calc.
EBP96 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.6 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power2,200 W

Mounting dimensions

Ø12 1/2″cutout Ø11″mounting depth 9″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth9″
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