Ground Zero GZNW 15SPL-XFLEX (2x1 Ohm)

15″ subwoofer · dual 1 Ω · 3,000 W RMS

Fs 30.2 HzQts 0.49Vas 2.09 ft³Xmax 1.38″

Recommended box

For a sedan, one sub, 3,000 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 volume1.48 ft³ (42 L)
Qtc0.76
Fc47 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 12 3/4″
Open sealed box in designer

Ported

Net volume4.10 ft³ (116 L)
Tuning (Fb)27 Hz
Portslot 5 1/8 × 16 11/16″, 68 13/16″ long
Port velocity at 3,000 W63 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 29 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.2 Hz
Qts0.49
Qes0.54
Qms5.51
Vas2.09 ft³
Re (one coil)1 Ω
Sd120.7 in²
Xmax1.38″
Vd166.3 in³ calc.
Mms404 g calc.
BL11.9 T·m calc.
EBP56 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.8 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power3,000 W

Mounting dimensions

Ø15 7/16″cutout Ø14 1/8″mounting depth 10 1/4″magnet Ø8 11/16″
Cutout diameter14 1/8″
Mounting depth10 1/4″
Overall diameter15 7/16″
Magnet diameter8 11/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 120.7 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