Bomber Outdoor 500W 4 Ohm (SW12OUT-500-4)

12″ subwoofer · 4 Ω · 500 W RMS

Fs 48 HzQts 0.67Vas 1.60 ft³Xmax 0.35″

Recommended box

For a sedan, one sub, 500 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 volume1.84 ft³ (52 L)
Qtc0.92
Fc66 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 3/16″
Open sealed box in designer

Ported

Net volume3.14 ft³ (89 L)
Tuning (Fb)44 Hz
Portslot 2 9/16 × 14 5/16″, 11 1/8″ long
Port velocity at 500 W65 ft/s
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 9/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs48 Hz
Qts0.67
Qes0.73
Qms8.53
Vas1.60 ft³
Re3.24 Ω
Sd81.1 in²
Xmax0.35″
Vd28.7 in³ calc.
Mms94 g calc.
BL11.2 T·m calc.
EBP66 — sealed or ported calc.
Sensitivity, 1 W / 1 m90.4 dB calc.

General

Size12″
Voice coils4 Ω
RMS power500 W

Mounting dimensions

Ø12 3/16″cutout ≈ Ø11″mounting depth 6 3/16″magnet Ø5 1/4″
Cutout diameter≈ 11″
Mounting depth6 3/16″
Overall diameter12 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 12″ models