Ground Zero GZHW 15XSPL-D1 (2x1 Ohm)

15″ subwoofer · dual 1 Ω · 2,000 W RMS

Fs 36.8 HzQts 0.48Vas 1.40 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 2,000 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 volume1.18 ft³ (33.5 L)
Qtc0.71
Fc54 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 10 11/16″
Open sealed box in designer

Ported

Net volume2.58 ft³ (73 L)
Tuning (Fb)33 Hz
Portslot 3 3/4 × 16 11/16″, 52 15/16″ long
Port velocity at 2,000 W63 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 18 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36.8 Hz
Qts0.48
Qes0.526
Qms5.79
Vas1.40 ft³
Re (one coil)1 Ω
Sd127.8 in²
Xmax0.55″
Vd70.5 in³ calc.
Mms454 g calc.
BL14.1 T·m calc.
EBP70 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.8 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power2,000 W

Mounting dimensions

Ø15 1/4″cutout Ø14″mounting depth 8 3/16″magnet Ø≈ 9 1/8″
Cutout diameter14″
Mounting depth8 3/16″
Overall diameter15 1/4″

Cone area (Sd) calculated from Fs, Vas and Mms: 127.8 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