Skar Audio VXF-12 D4

12″ subwoofer · dual 4 Ω · 1,500 W RMS

Fs 34.4 HzQts 0.43Vas 0.80 ft³Xmax 0.98″

Recommended box

For a sedan, one sub, 1,500 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 volume0.79 ft³ (22.5 L)
Qtc0.60
Fc49 Hz
F3 (−3 dB, no cabin gain)61 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11″
Open sealed box in designer

Ported

Net volume1.41 ft³ (40 L)
Tuning (Fb)31 Hz
Portround port Ø3″, 11 5/8″ long
Port velocity at 1,500 W347 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)21 1/8″ × 15 3/4″ × 11″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.4 Hz
Qts0.43
Qes0.47
Qms4.46
Vas0.80 ft³
Re (one coil)≈ 3.4 Ω
Sd73.1 in²
Xmax0.98″
Vd71.9 in³ calc.
Mms297 g calc.
BL21.5 T·m calc.
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.9 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,500 W

Mounting dimensions

Ø12 1/2″cutout Ø11″mounting depth 8 1/2″magnet Ø8 9/16″
Cutout diameter11″
Mounting depth8 1/2″
Overall diameter12 1/2″
Magnet diameter8 9/16″

“≈” 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 Skar Audio 12″ models