Bomber Bicho Papão 400W 4+4 Ohm (SW15BP400-4+4)

15″ subwoofer · dual 4 Ω · 400 W RMS

Fs 29 HzQts 0.92Vas 6.60 ft³Xmax 0.37″

Recommended box

For a sedan, one sub, 400 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 volume3.04 ft³ (86 L)
Qtc1.65
Fc52 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12 3/4″
Open sealed box in designer

Ported

Net volume5.16 ft³ (146 L)
Tuning (Fb)42 Hz
Portslot 2 3/16 × 16 5/16″, 5 7/16″ long
Port velocity at 400 W62 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20 11/16″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29 Hz
Qts0.92
Qes1.08
Qms6.37
Vas6.60 ft³
Re (one coil)3.02 Ω
Sd133.3 in²
Xmax0.37″
Vd49.9 in³ calc.
Mms169 g calc.
BL9.3 T·m calc.
EBP27 — suits sealed calc.
Sensitivity, 1 W / 1 m88.3 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power400 W

Mounting dimensions

Ø15 3/16″cutout ≈ Ø13 11/16″mounting depth 6 9/16″magnet Ø5 1/4″
Cutout diameter≈ 13 11/16″
Mounting depth6 9/16″
Overall diameter15 3/16″
Magnet diameter5 1/4″

“≈” 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 15″ models