PowerBass 3XL-1201D

12″ subwoofer · dual 1 Ω · 850 W RMS

Fs 30.3 HzQts 0.40Vas 1.39 ft³Xmax 0.94″

Recommended box

For a sedan, one sub, 850 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 volume0.74 ft³ (21 L)
Qtc0.68
Fc51 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.59 ft³ (45 L)
Tuning (Fb)32 Hz
Portslot 1 15/16 × 14 5/16″, 41 15/16″ long
Port velocity at 850 W66 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 3/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.3 Hz
Qts0.40
Qes0.45
Qms3.92
Vas1.39 ft³
Re (one coil)1.2 Ω
Sd82.3 in²
Xmax0.94″
Vd77.8 in³ calc.
Mms281 g calc.
BL11.9 T·m calc.
EBP67 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.9 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power850 W

Mounting dimensions

Ø≈ 12 3/16″cutout Ø11″mounting depth 7 7/16″magnet Ø≈ 7 3/16″
Cutout diameter11″
Mounting depth7 7/16″

“≈” 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