Memphis Car Audio MJP1544 (MOJO Pro 15" DVC 4ohm)

15″ subwoofer · dual 4 Ω · 750 W RMS

Fs 31.2 HzQts 0.65Vas 2.93 ft³Xmax 0.51″

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 volume2.93 ft³ (83 L)
Qtc0.93
Fc44 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12 3/8″
Open sealed box in designer

Ported

Net volume4.98 ft³ (141 L)
Tuning (Fb)31 Hz
Portslot 2 15/16 × 16 5/16″, 21 1/8″ long
Port velocity at 750 W61 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 22″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.2 Hz
Qts0.65
Qes0.727
Qms6.56
Vas2.93 ft³
Re (one coil)3.5 Ω
Sd128.6 in²
Xmax0.51″
Vd65.8 in³ calc.
Mms306 g calc.
BL17 T·m calc.
EBP43 — suits sealed calc.
Sensitivity, 1 W / 1 m87.4 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power750 W

Mounting dimensions

Ø15 7/8″cutout Ø13 7/8″mounting depth 7 7/8″magnet Ø6 11/16″
Cutout diameter13 7/8″
Mounting depth7 7/8″
Overall diameter15 7/8″
Magnet diameter6 11/16″

“≈” 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 Memphis Car Audio 15″ models