Deaf Bonce Apocalypse DB-SA415 D2

15″ subwoofer · dual 2 Ω · 3,500 W RMS

Fs 30 HzQts 0.40Vas 4.73 ft³Xmax 1.26″

Recommended box

For a sedan, one sub, 3,500 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 volume1.61 ft³ (45.5 L)
Qtc0.80
Fc60 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 14 1/4″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)32 Hz
Portslot 5 7/8 × 16 5/16″, 44 3/16″ long
Port velocity at 3,500 W68 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 28 3/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts0.40
Qes0.429
Qms6
Vas4.73 ft³
Re (one coil)1.4 Ω
Sd≈ 124 in²
Xmax1.26″
EBP70 — sealed or ported calc.
Sensitivity, 1 W / 1 m91.3 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power3,500 W

Mounting dimensions

Ø≈ 15 1/8″cutout Ø13 15/16″mounting depth 11 3/4″magnet Ø≈ 9 1/16″
Cutout diameter13 15/16″
Mounting depth11 3/4″

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 15″ models