Deaf Bonce Apocalypse DB-SA305 D2

15″ subwoofer · dual 2 Ω · 2,000 W RMS

Fs 32 HzQts 0.43Vas 2.22 ft³Xmax 0.71″

Recommended box

For a sedan, one sub, 2,000 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 volume1.13 ft³ (32 L)
Qtc0.74
Fc55 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 10 5/16″
Open sealed box in designer

Ported

Net volume2.97 ft³ (84 L)
Tuning (Fb)32 Hz
Portslot 3 3/4 × 16 11/16″, 48 7/16″ long
Port velocity at 2,000 W64 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 19 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.43
Qes0.463
Qms6
Vas2.22 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 124 in²
Xmax0.71″
EBP69 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.5 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power2,000 W

Mounting dimensions

Ø≈ 15 1/4″cutout Ø14 1/8″mounting depth 7 7/8″magnet Ø≈ 9 3/16″
Cutout diameter14 1/8″
Mounting depth7 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 15″ models