Hertz Mille Pro MP 250 D4.3 (DVC 4+4 ohm)

10″ subwoofer · dual 4 Ω · 600 W RMS

Fs 27 HzQts 0.49Vas 1.09 ft³Xmax 0.67″

Recommended box

For a sedan, one sub, 600 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 volume0.64 ft³ (18 L)
Qtc0.80
Fc45 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 11 1/16″
Open sealed box in designer

Ported

Net volume2.05 ft³ (58 L)
Tuning (Fb)25 Hz
Portslot 1 3/4 × 14 5/16″, 48 7/8″ long
Port velocity at 600 W66 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 3/4″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27 Hz
Qts0.49
Qes0.53
Qms5.8
Vas1.09 ft³
Re (one coil)3.6 Ω
Sd55.2 in²
Xmax0.67″
Vd37 in³ calc.
Mms202 g calc.
BL15.2 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.6 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power600 W

Mounting dimensions

Ø10 9/16″cutout Ø9 5/16″mounting depth 5 9/16″magnet Ø6 1/8″
Cutout diameter9 5/16″
Mounting depth5 9/16″
Overall diameter10 9/16″
Magnet diameter6 1/8″

“≈” 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 Hertz 10″ models