PowerBass S-12T

12″ subwoofer · 4 Ω · 300 W RMS

Fs 34 HzQts 0.63Vas 1.62 ft³Xmax 0.27″

Recommended box

For a sedan, one sub, 300 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 volume1.87 ft³ (53 L)
Qtc0.87
Fc46 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 3/8″
Open sealed box in designer

Ported

Net volume3.18 ft³ (90 L)
Tuning (Fb)32 Hz
Portslot 1 3/4 × 14 5/16″, 16 11/16″ long
Port velocity at 300 W59 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34 Hz
Qts0.63
Qes0.758
Qms3.87
Vas1.62 ft³
Re3.2 Ω
Sd82.3 in²
Xmax0.27″
Vd22 in³ calc.
Mms191 g calc.
BL13.1 T·m calc.
EBP45 — suits sealed calc.
Sensitivity, 1 W / 1 m85.8 dB calc.

General

Size12″
Voice coils4 Ω
RMS power300 W

Mounting dimensions

Ø≈ 12 1/8″cutout Ø10 15/16″mounting depth 3 1/4″magnet Ø≈ 7 1/8″
Cutout diameter10 15/16″
Mounting depth3 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 PowerBass 12″ models