Hertz Mille Pro MP 250 D2.3 (DVC 2+2 ohm)

10″ subwoofer · dual 2 Ω · 600 W RMS

Fs 30 HzQts 0.54Vas 0.88 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 volume0.78 ft³ (22 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 13 1/16″
Open sealed box in designer

Ported

Net volume2.15 ft³ (61 L)
Tuning (Fb)25 Hz
Portslot 1 3/4 × 14 5/16″, 46 1/4″ long
Port velocity at 600 W69 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 15/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts0.54
Qes0.6
Qms5.92
Vas0.88 ft³
Re (one coil)1.7 Ω
Sd55.2 in²
Xmax0.67″
Vd37 in³ calc.
Mms202 g calc.
BL10.4 T·m calc.
EBP50 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.5 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power600 W

Mounting dimensions

Ø10 9/16″cutout Ø9 5/16″mounting depth 5 9/16″magnet Ø6 1/2″
Cutout diameter9 5/16″
Mounting depth5 9/16″
Overall diameter10 9/16″
Magnet diameter6 1/2″

“≈” 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