Hertz Dieci DS 250.3 (SVC 4 ohm)

10″ subwoofer · 4 Ω · 200 W RMS

Fs 36 HzQts 0.62Vas 1.02 ft³Xmax 0.39″

Recommended box

For a sedan, one sub, 200 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 volume1.24 ft³ (35 L)
Qtc0.84
Fc49 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 6 5/8″
Open sealed box in designer

Ported

Net volume2.12 ft³ (60 L)
Tuning (Fb)32 Hz
Portslot 1 9/16 × 14 5/16″, 23 7/8″ long
Port velocity at 200 W47 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.62
Qes0.69
Qms6.35
Vas1.02 ft³
Re3.4 Ω
Sd54.9 in²
Xmax0.39″
Vd21.6 in³ calc.
Mms120 g calc.
BL11.6 T·m calc.
EBP52 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.9 dB calc.

General

Size10″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø10 1/8″cutout Ø9 3/16″mounting depth 4 3/16″magnet Ø≈ 6″
Cutout diameter9 3/16″
Mounting depth4 3/16″
Overall diameter10 1/8″

Cone area (Sd) calculated from Fs, Vas and Mms: 55 in².

“≈” 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