Deaf Bonce Apocalypse DB-SA305 D1

15″ subwoofer · dual 1 Ω · 2,000 W RMS

Fs 31.7 HzQts 0.40Vas 2.15 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)
Qtc0.68
Fc54 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 10 5/16″
Open sealed box in designer

Ported

Net volume2.37 ft³ (67 L)
Tuning (Fb)33 Hz
Portslot 3 1/8 × 16 11/16″, 48 9/16″ long
Port velocity at 2,000 W69 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 16 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.7 Hz
Qts0.40
Qes0.429
Qms6
Vas2.15 ft³
Re (one coil)≈ 0.85 Ω
Sd≈ 124 in²
Xmax0.71″
EBP74 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.6 dB calc.

General

Size15″
Voice coilsdual 1 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