Ground Zero GZPW 15XMAX (2x1 Ohm)

15″ subwoofer · dual 1 Ω · 6,000 W RMS

Fs 33.3 HzQts 0.44Vas 0.81 ft³Xmax 0.89″

Recommended box

For a sedan, one sub, 6,000 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 volume1.78 ft³ (50.5 L)
Qtc0.53
Fc40 Hz
F3 (−3 dB, no cabin gain)58 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 14 13/16″
Open sealed box in designer

Ported

Net volume2.08 ft³ (59 L)
Tuning (Fb)26 Hz
Portslot 1 9/16 × 16 11/16″, 45 5/8″ long
Port velocity at 6,000 W218 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 12 1/2″

The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.

Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs33.3 Hz
Qts0.44
Qes0.477
Qms6.02
Vas0.81 ft³
Re (one coil)1 Ω
Sd109.6 in²
Xmax0.89″
Vd97.1 in³ calc.
Mms710 g calc.
BL17.6 T·m calc.
EBP70 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.5 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power6,000 W

Mounting dimensions

Ø15 7/16″cutout Ø14 1/8″mounting depth 12 5/16″magnet Ø9 13/16″
Cutout diameter14 1/8″
Mounting depth12 5/16″
Overall diameter15 7/16″
Magnet diameter9 13/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 109.6 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 Ground Zero 15″ models