Bomber Bicho Papão 1200W 4+4 Ohm (SW12BPF1200-4+4)

12″ subwoofer · dual 4 Ω · 1,200 W RMS

Fs 38 HzQts 0.66Vas 1.06 ft³Xmax 0.71″

Recommended box

For a sedan, one sub, 1,200 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 volume1.59 ft³ (45 L)
Qtc0.85
Fc49 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 18 3/8″
Open sealed box in designer

Ported

Net volume2.72 ft³ (77 L)
Tuning (Fb)32 Hz
Portslot 3 3/8 × 14 5/16″, 40 5/16″ long
Port velocity at 1,200 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 18″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38 Hz
Qts0.66
Qes0.7
Qms10.28
Vas1.06 ft³
Re (one coil)3.6 Ω
Sd70.2 in²
Xmax0.71″
Vd49.8 in³ calc.
Mms171 g calc.
BL14.5 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.7 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,200 W

Mounting dimensions

Ø12 13/16″cutout ≈ Ø11 9/16″mounting depth 7 7/8″magnet Ø6 5/8″
Cutout diameter≈ 11 9/16″
Mounting depth7 7/8″
Overall diameter12 13/16″
Magnet diameter6 5/8″

“≈” 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