Hifonics ZXS8D2

8″ subwoofer · dual 2 Ω · 300 W RMS

Fs 31.3 HzQts 0.44Vas 0.44 ft³Xmax 0.43″

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 volume0.28 ft³ (8 L)
Qtc0.70
Fc50 Hz
F3 (−3 dB, no cabin gain)53 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 8 1/2″
Open sealed box in designer

Ported

Net volume0.64 ft³ (18 L)
Tuning (Fb)38 Hz
Portround port Ø2 1/2″, 12 11/16″ long
Port velocity at 300 W161 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)15 9/16″ × 15 3/4″ × 7 1/2″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.3 Hz
Qts0.44
Qes0.51
Qms3.25
Vas0.44 ft³
Re (one coil)2 Ω
Sd31.3 in²
Xmax0.43″
Vd13.6 in³ calc.
Mms121 g calc.
BL9.6 T·m calc.
EBP61 — sealed or ported calc.
Sensitivity, 1 W / 1 m80.7 dB calc.

General

Size8″
Voice coilsdual 2 Ω
RMS power300 W

Mounting dimensions

Ø8 7/16″cutout Ø7 3/16″mounting depth 4 15/16″magnet Ø≈ 4 11/16″
Cutout diameter7 3/16″
Mounting depth4 15/16″
Overall diameter8 7/16″

“≈” 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 8″ models