Cerwin-Vega Mobile VPRO124D (VPRO 12" DVC 4ohm)

12″ subwoofer · dual 4 Ω · 750 W RMS

Fs 29.2 HzQts 0.64Vas 1.44 ft³Xmax 0.72″

Recommended box

For a sedan, one sub, 750 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 volume1.73 ft³ (49 L)
Qtc0.87
Fc40 Hz
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)27 Hz
Portslot 2 9/16 × 14 5/16″, 40 7/8″ long
Port velocity at 750 W61 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.2 Hz
Qts0.64
Qes0.69
Qms9.5
Vas1.44 ft³
Re (one coil)4 Ω
Sd76 in²
Xmax0.72″
Vd54.4 in³ calc.
Mms247 g calc.
BL16.2 T·m calc.
EBP42 — suits sealed calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power750 W

Mounting dimensions

Ø12 5/8″cutout Ø10 11/16″mounting depth 6″magnet Ø≈ 6 15/16″
Cutout diameter10 11/16″
Mounting depth6″
Overall diameter12 5/8″

“≈” 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 Cerwin-Vega Mobile 12″ models