Cerwin-Vega Mobile ST154D (Stroker 15" DVC 4ohm)

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

Fs 24.8 HzQts 0.30Vas 4.34 ft³Xmax 0.65″

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 volume1.36 ft³ (38.5 L)
Qtc0.62
Fc51 Hz
F3 (−3 dB, no cabin gain)62 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 11 15/16″
Open sealed box in designer

Ported

Net volume2.40 ft³ (68 L)
Tuning (Fb)32 Hz
Portslot 2 3/8 × 16 11/16″, 37 11/16″ long
Port velocity at 1,200 W64 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 14″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24.8 Hz
Qts0.30
Qes0.34
Qms2.8
Vas4.34 ft³
Re (one coil)3.25 Ω
Sd125.6 in²
Xmax0.65″
Vd81.1 in³ calc.
Mms311 g calc.
BL21.5 T·m calc.
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.4 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,200 W

Mounting dimensions

Ø15 3/8″cutout Ø14 1/16″mounting depth 9 1/2″magnet Ø≈ 9 1/8″
Cutout diameter14 1/16″
Mounting depth9 1/2″
Overall diameter15 3/8″

“≈” 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 15″ models