Deaf Bonce Apocalypse DB-4.5K 12" D1

12″ subwoofer · dual 1 Ω · 4,500 W RMS

Fs 31 HzQts 0.41Vas 0.76 ft³

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 volume0.71 ft³ (20 L)
Qtc0.59
Fc45 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)27 Hz
Port2 round ports Ø2 1/2″, 23 7/16″ long
Port velocity at 4,500 W409 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/16″ × 15 3/4″ × 8 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31 Hz
Qts0.41
Qes0.44
Qms6
Vas0.76 ft³
Re (one coil)0.7 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP70 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power4,500 W

Mounting dimensions

Ø≈ 12 5/16″cutout ≈ Ø11 1/8″mounting depth ≈ 5 7/8″magnet Ø≈ 7 3/16″
Cutout diameter≈ 11 1/8″
Mounting depth≈ 5 7/8″

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