Memphis Car Audio PRX104 (Power Reference 10" SVC 4ohm)

10″ subwoofer · 4 Ω · 250 W RMS

Fs 40 HzQts 0.65Vas 0.60 ft³Xmax 0.51″

Recommended box

For a sedan, one sub, 250 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 volume1.13 ft³ (32 L)
Qtc0.81
Fc50 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 17 15/16″
Open sealed box in designer

Ported

Net volume1.91 ft³ (54 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 14 5/16″, 29″ long
Port velocity at 250 W52 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs40 Hz
Qts0.65
Qes0.74
Qms5.64
Vas0.60 ft³
Re≈ 3.4 Ω
Sd49.5 in²
Xmax0.51″
Vd25.4 in³ calc.
Mms134 g calc.
BL12.4 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size10″
Voice coils4 Ω
RMS power250 W

Mounting dimensions

10 9/16″ × 10 9/16″cutout 9 1/4″mounting depth 5 3/16″magnet Ø6 7/16″
Cutout (square, side)9 1/4″
Mounting depth5 3/16″
Overall diameter10 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 10″ models