Audioque SDC2.512 D4

12″ subwoofer · dual 4 Ω · 600 W RMS

Fs 32 HzQts 0.47Vas 1.30 ft³

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 volume0.71 ft³ (20 L)
Qtc0.79
Fc54 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume2.26 ft³ (64 L)
Tuning (Fb)29 Hz
Portslot 1 15/16 × 14 5/16″, 35 5/16″ long
Port velocity at 600 W66 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.47
Qes0.533
Qms4.09
Vas1.30 ft³
Re (one coil)≈ 3.4 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP60 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.5 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power600 W

Mounting dimensions

Ø≈ 12 5/16″cutout ≈ Ø11 1/8″mounting depth 6 1/2″magnet Ø≈ 7 3/16″
Cutout diameter≈ 11 1/8″
Mounting depth6 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 Audioque 12″ models