Bomber Slim 200W 4 Ohm (SW8SL-200-4)

8″ subwoofer · 4 Ω · 200 W RMS

43 HzFs, resonance
0.51Qts
0.42 ft³Vas
0.21″Xmax
200 WRMS

Recommended box

For a sedan, one sub, 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

smaller, tighter
0.32 ft³ (9 L)
Net volume
Qtc0.77
Fc66 Hz
F3 (−3 dB, no cabin gain)64 Hz
Example box (outside)10 5/8″ × 10 5/8″ × 8 5/8″
Open sealed box in designer

Ported

deeper, louder
0.88 ft³ (25 L)
Net volume
Tuning (Fb)36 Hz
Portround port Ø3″, 14 1/4″ long
Port velocity at 200 W109 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)15 1/4″ × 15 3/4″ × 10 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43 Hz
Qts0.51
Qes0.54
Qms7.9
Vas0.42 ft³
Re2.94 Ω
Sd33.2 in²
Xmax0.21″
Vd7.1 in³ calc.
Mms74 g calc.
BL10.4 T·m calc.
EBP80 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.5 dB calc.

General

Size8″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø8 3/8″cutout ≈ Ø7 9/16″mounting depth 2 15/16″magnet Ø5 1/4″
Cutout diameter≈ 7 9/16″
Mounting depth2 15/16″
Overall diameter8 3/8″
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 8″ models