Bomber Outdoor 500W 4 Ohm (SW15OUT-500-4)

15″ subwoofer · 4 Ω · 500 W RMS

Fs 42 HzQts 1.03Vas 3.79 ft³Xmax 0.35″
The published specs don’t add up:

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 volume3.07 ft³ (87 L)
Qtc1.55
Fc63 Hz
F3 (−3 dB, no cabin gain)45 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12 7/8″
Open sealed box in designer

Ported

Net volume5.19 ft³ (147 L)
Tuning (Fb)48 Hz
Portslot 2 9/16 × 16 5/16″, 4″ long
Port velocity at 500 W62 ft/s
F3 (−3 dB, no cabin gain)39 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

Fs42 Hz
Qts1.03
Qes1.18
Qms8.38
Vas3.79 ft³
Re3.32 Ω
Sd134.2 in²
Xmax0.35″
Vd47.6 in³ calc.
Mms142 g calc.
BL10.3 T·m calc.
EBP36 — suits sealed calc.
Sensitivity, 1 W / 1 m90.3 dB calc.

General

Size15″
Voice coils4 Ω
RMS power500 W

Mounting dimensions

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