Hifonics ZW12D4 (Zeus 12" DVC 4ohm)

12″ subwoofer · dual 4 Ω · 300 W RMS

Fs 27.1 HzQts 1.09Vas 3.82 ft³Xmax 0.26″

Recommended box

For a sedan, one sub, 300 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 volume1.77 ft³ (50 L)
Qtc1.94
Fc48 Hz
F3 (−3 dB, no cabin gain)34 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 15/16″
Open sealed box in designer

Ported

Net volume3.00 ft³ (85 L)
Tuning (Fb)42 Hz
Portslot 1 3/4 × 14 5/16″, 8 5/8″ long
Port velocity at 300 W59 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 1/2″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27.1 Hz
Qts1.09
Qes1.34
Qms5.9
Vas3.82 ft³
Re (one coil)3.41 Ω
Sd77.3 in²
Xmax0.26″
Vd20.4 in³ calc.
Mms112 g calc.
BL7 T·m calc.
EBP20 — suits sealed calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power300 W

Mounting dimensions

Ø≈ 12 5/16″cutout ≈ Ø11 1/8″mounting depth ≈ 5 7/8″magnet Ø≈ 7 3/16″
Cutout diameter≈ 11 1/8″
Mounting depth≈ 5 7/8″

“≈” 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 Hifonics 12″ models