Deaf Bonce Apocalypse DB-SA412 Street SPL D1

12″ subwoofer · dual 1 Ω · 2,400 W RMS

Fs 47 HzQts 0.41Vas 0.43 ft³Xmax 0.63″

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)
Qtc0.51
Fc58 Hz
F3 (−3 dB, no cabin gain)90 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)32 Hz
Portround port Ø2 1/2″, 7 1/8″ long
Port velocity at 2,400 W687 ft/s
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)21 5/8″ × 15 3/4″ × 10 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs47 Hz
Qts0.41
Qes0.44
Qms6
Vas0.43 ft³
Re (one coil)1 Ω
Sd≈ 76 in²
Xmax0.63″
EBP107 — suits ported calc.
Sensitivity, 1 W / 1 m86.6 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power2,400 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 1/4″mounting depth 8 1/4″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth8 1/4″

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

Judging by its value, the published Re is for both coils in parallel — converted to per coil.

“≈” 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