Hifonics ZSPL12D2

12″ subwoofer · dual 2 Ω · 600 W RMS

Fs 34 HzQts 0.53Vas 1.51 ft³Xmax 0.51″

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 volume1.20 ft³ (34 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 15 5/16″
Open sealed box in designer

Ported

Net volume3.07 ft³ (87 L)
Tuning (Fb)30 Hz
Portslot 2 3/8 × 14 5/16″, 27 15/16″ long
Port velocity at 600 W64 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34 Hz
Qts0.53
Qes0.61
Qms4.24
Vas1.51 ft³
Re (one coil)1.8 Ω
Sd79.4 in²
Xmax0.51″
Vd40.6 in³ calc.
Mms191 g calc.
BL11 T·m calc.
EBP56 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power600 W

Mounting dimensions

Ø12 5/8″cutout Ø10 7/8″mounting depth 6 9/16″magnet Ø≈ 7 1/16″
Cutout diameter10 7/8″
Mounting depth6 9/16″
Overall diameter12 5/8″

“≈” 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