Cerwin-Vega Mobile VPS124D (12" DVC 4ohm)

12″ subwoofer · dual 4 Ω · 350 W RMS

Fs 38.6 HzQts 0.83Vas 1.52 ft³Xmax 0.35″

Recommended box

For a sedan, one sub, 350 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 volume1.91 ft³ (54 L)
Qtc1.12
Fc52 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 1/2″
Open sealed box in designer

Ported

Net volume3.25 ft³ (92 L)
Tuning (Fb)36 Hz
Portslot 1 15/16 × 14 5/16″, 13 1/2″ long
Port velocity at 350 W60 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.6 Hz
Qts0.83
Qes1
Qms5
Vas1.52 ft³
Re (one coil)3 Ω
Sd83.7 in²
Xmax0.35″
Vd29 in³ calc.
Mms163 g calc.
BL10.9 T·m calc.
EBP39 — suits sealed calc.
Sensitivity, 1 W / 1 m85.9 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power350 W

Mounting dimensions

Ø12 9/16″cutout Ø11″mounting depth 3 11/16″magnet Ø≈ 7 3/16″
Cutout diameter11″
Mounting depth3 11/16″
Overall diameter12 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 Cerwin-Vega Mobile 12″ models