Deaf Bonce Apocalypse DB-3012 D2

12″ subwoofer · dual 2 Ω · 2,400 W RMS

Fs 33.8 HzQts 0.43Vas 1.07 ft³Xmax 0.75″

Recommended box

For a sedan, one sub, 2,400 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 volume0.83 ft³ (23.5 L)
Qtc0.65
Fc51 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 3/8″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)33 Hz
Portround port Ø2 1/2″, 6 5/8″ long
Port velocity at 2,400 W636 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)20 3/4″ × 15 3/4″ × 11 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.8 Hz
Qts0.43
Qes0.463
Qms6
Vas1.07 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.75″
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m86 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,400 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 3/16″mounting depth 8 13/16″magnet Ø≈ 7 1/4″
Cutout diameter11 3/16″
Mounting depth8 13/16″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Deaf Bonce 12″ models