DD Audio 3012b ESP D2

12″ subwoofer · dual 2 Ω · 800 W RMS

Fs 26.2 HzQts 0.42Vas 2.62 ft³Xmax 0.69″

Recommended box

For a sedan, one sub, 800 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 volume1.02 ft³ (29 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)15 3/8″ × 15 3/8″ × 11 1/2″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)28 Hz
Portslot 2 9/16 × 14 3/4″, 38 3/4″ long
Port velocity at 800 W62 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 16 1/8″ × 17 5/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.2 Hz
Qts0.42
Qes0.458
Qms5.87
Vas2.62 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.69″
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power800 W

Mounting dimensions

Ø13 3/8″cutout Ø12 3/16″mounting depth 9″magnet Ø≈ 7 15/16″
Cutout diameter12 3/16″
Mounting depth9″
Overall diameter13 3/8″

“≈” 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