DD Audio 712g D4

12″ subwoofer · dual 4 Ω · 2,000 W RMS

Fs 32 HzQts 0.43Vas 0.90 ft³Xmax 1.18″

Recommended box

For a sedan, one sub, 2,000 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 volume0.97 ft³ (27.5 L)
Qtc0.59
Fc44 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 12 3/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)30 Hz
Portround port Ø2 1/2″, 8 3/8″ long
Port velocity at 2,000 W557 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)19 7/16″ × 15 3/4″ × 12″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.43
Qes0.474
Qms4.38
Vas0.90 ft³
Re (one coil)≈ 3.4 Ω
Sd≈ 76 in²
Xmax1.18″
EBP68 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.5 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power2,000 W

Mounting dimensions

Ø12 5/8″cutout Ø11 3/8″mounting depth 9 5/8″magnet Ø7 9/16″
Cutout diameter11 3/8″
Mounting depth9 5/8″
Overall diameter12 5/8″
Magnet diameter7 9/16″

“≈” 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 DD Audio 12″ models