Power Acoustik GW-124

12″ subwoofer · dual 4 Ω · 1,200 W RMS

Fs 32.9 HzQts 0.58Vas 1.41 ft³

Recommended box

For a sedan, one sub, 1,200 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

Net volume1.59 ft³ (45 L)
Qtc0.80
Fc45 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 19 7/16″
Open sealed box in designer

Ported

Net volume2.90 ft³ (82 L)
Tuning (Fb)30 Hz
Portslot 3 1/8 × 14 5/16″, 40 3/4″ long
Port velocity at 1,200 W65 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 18 1/2″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.9 Hz
Qts0.58
Qes0.672
Qms4.43
Vas1.41 ft³
Re (one coil)3.81 Ω
Sd74.4 in²
Xmax≈ 0.39″
Mms191 g calc.
BL15 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,200 W

Mounting dimensions

Ø≈ 12 3/16″cutout Ø11″mounting depth 6 1/4″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth6 1/4″

Cone area (Sd) calculated from Fs, Vas and Mms: 74.4 in².

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 Power Acoustik 12″ models