Ground Zero GZNW 12X (2x2 Ohm)

12″ subwoofer · dual 2 Ω · 2,000 W RMS

Fs 35.3 HzQts 0.43Vas 0.78 ft³Xmax 0.98″

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 volume0.83 ft³ (23.5 L)
Qtc0.59
Fc49 Hz
F3 (−3 dB, no cabin gain)63 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)31 Hz
Port2 round ports Ø2 1/2″, 17 5/16″ long
Port velocity at 2,000 W294 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)23 1/16″ × 15 3/4″ × 10 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.3 Hz
Qts0.43
Qes0.45
Qms7.76
Vas0.78 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.98″
EBP78 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,000 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 1/4″mounting depth 8 1/4″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth8 1/4″

“≈” 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 12″ models