Bomber Bicho Papão 800W 4 Ohm (SW12BP-800-4)

12″ subwoofer · 4 Ω · 800 W RMS

29 HzFs, resonance
0.37Qts
2.22 ft³Vas
0.51″Xmax
800 WRMS

Recommended box

For a sedan, one sub, 800 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

smaller, tighter
0.67 ft³ (19 L)
Net volume
Qtc0.78
Fc60 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 11/16″
Open sealed box in designer

Ported

deeper, louder
1.98 ft³ (56 L)
Net volume
Tuning (Fb)33 Hz
Portslot 2 3/8 × 14 5/16″, 37 3/16″ long
Port velocity at 800 W61 ft/s
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29 Hz
Qts0.37
Qes0.4
Qms5.71
Vas2.22 ft³
Re2.95 Ω
Sd75.5 in²
Xmax0.51″
Vd38.6 in³ calc.
Mms161 g calc.
BL14.7 T·m calc.
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.8 dB calc.

General

Size12″
Voice coils4 Ω
RMS power800 W

Mounting dimensions

Ø12 1/8″cutout ≈ Ø10 7/8″mounting depth 6 11/16″magnet Ø6 1/8″
Cutout diameter≈ 10 7/8″
Mounting depth6 11/16″
Overall diameter12 1/8″
Magnet diameter6 1/8″

“≈” 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 Bomber 12″ models