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

12″ subwoofer · dual 4 Ω · 800 W RMS

Fs 33 HzQts 0.48Vas 1.59 ft³Xmax 0.51″

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

Net volume0.88 ft³ (25 L)
Qtc0.80
Fc55 Hz
F3 (−3 dB, no cabin gain)53 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 15/16″
Open sealed box in designer

Ported

Net volume2.83 ft³ (80 L)
Tuning (Fb)30 Hz
Portslot 2 3/4 × 14 5/16″, 36 5/16″ long
Port velocity at 800 W62 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 3/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33 Hz
Qts0.48
Qes0.52
Qms5.55
Vas1.59 ft³
Re (one coil)3.63 Ω
Sd75.5 in²
Xmax0.51″
Vd38.6 in³ calc.
Mms174 g calc.
BL15.9 T·m calc.
EBP63 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.9 dB calc.

General

Size12″
Voice coilsdual 4 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