Deaf Bonce Apocalypse DB-4512R D2

12″ subwoofer · dual 2 Ω · 4,500 W RMS

Fs 40 HzQts 0.59Vas 1.35 ft³Xmax 0.89″

Recommended box

For a sedan, one sub, 4,500 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 volume1.80 ft³ (51 L)
Qtc0.78
Fc53 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 14 7/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)35 Hz
Portslot 5 1/8 × 16 11/16″, 56″ long
Port velocity at 4,500 W75 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 22 5/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs40 Hz
Qts0.59
Qes0.654
Qms6
Vas1.35 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.89″
EBP61 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power4,500 W

Mounting dimensions

Ø≈ 15 3/16″cutout Ø14″mounting depth 11 15/16″magnet Ø≈ 9 1/16″
Cutout diameter14″
Mounting depth11 15/16″

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