DD Audio 512e D2

12″ subwoofer · dual 2 Ω · 700 W RMS

Fs 33 HzQts 0.64Vas 1.07 ft³Xmax 0.71″

Recommended box

For a sedan, one sub, 700 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 volume1.73 ft³ (49 L)
Qtc0.81
Fc42 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 20 15/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)27 Hz
Portslot 2 3/8 × 14 5/16″, 37 9/16″ long
Port velocity at 700 W65 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33 Hz
Qts0.64
Qes0.73
Qms4.88
Vas1.07 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.71″
EBP45 — suits sealed calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power700 W

Mounting dimensions

Ø12 1/8″cutout Ø11″mounting depth 6 1/2″magnet Ø7″
Cutout diameter11″
Mounting depth6 1/2″
Overall diameter12 1/8″
Magnet diameter7″

“≈” 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