Memphis Car Audio PRX1544 (Power Reference 15" DVC 4ohm)

15″ subwoofer · dual 4 Ω · 350 W RMS

Fs 30 HzQts 1.02Vas 3.13 ft³Xmax 0.53″
The published specs don’t add up:

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 volume2.83 ft³ (80 L)
Qtc1.48
Fc44 Hz
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12″
Open sealed box in designer

Ported

Net volume4.77 ft³ (135 L)
Tuning (Fb)35 Hz
Portslot 1 3/4 × 16 5/16″, 8 3/4″ long
Port velocity at 350 W61 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 19 1/2″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts1.02
Qes1.29
Qms4.82
Vas3.13 ft³
Re (one coil)≈ 3.4 Ω
Sd123.3 in²
Xmax0.53″
Vd65.5 in³ calc.
Mms285 g calc.
BL11.9 T·m calc.
EBP23 — suits sealed calc.
Sensitivity, 1 W / 1 m84.7 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power350 W

Mounting dimensions

15 9/16″ × 15 9/16″cutout 13 13/16″mounting depth 6 3/4″magnet Ø6 7/16″
Cutout (square, side)13 13/16″
Mounting depth6 3/4″
Overall diameter15 9/16″
Magnet diameter6 7/16″

“≈” 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