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Ground Zero GZIW 300X

12" · 4 Ω · 350 W · 86.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs34.9 Hz
Qts0.69
Qes0.768
Qms6.82
Vas53.6 L
Sd488 cm²
Xmax7.5 mm
Re3.49 Ω
Bl11.4 T·m
Mms130.5 g
Pe350 W
Sensitivity86.6 dB

Alignment hint

EBP45 · sealed
Sealed Vb (Qtc ≈ 0.71)≈ 1067.7 L

EBP < 50: favours a sealed (closed) alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Hertz Audio ES 300.535 +0.10.66 -0.0348.5 -5.19 +1.586.6 =close+
Infinity Kappa 123WDSSI 2Ohm34.2 -0.70.778 +0.0958.6153 +5.0210.2 +2.786.0429 -0.56close2 Ω vs 4 Ω: amp load changes+
Powerbass S-12T34.4 -0.50.634 -0.0645.92 -7.686.9 -0.685.8 -0.8closeXmax 6.9 mm < 7.5 mm: lower excursion-limited SPL+
Selenium 12SW3A DVC 2+235 +0.10.724 +0.0349 -4.66.5 -189.6 +3closeXmax 6.5 mm < 7.5 mm: lower excursion-limited SPL+
Pioneer TS-W251R28.9 -60.68 -0.0157.86 +4.267.8 +0.384.6 -2close120 W vs 350 W: lower power handling+
Alpine SWE-124231 -3.90.66 -0.0361 +7.411.7 +4.285.9 -0.7close250 W vs 350 W: lower power handling+
hertz Hertz Audio ES300.535 +0.10.66 -0.0348.5 -5.16.8 -0.790.8 +4.2closeXmax 6.8 mm < 7.5 mm: lower excursion-limited SPL+
Ground Zero GZIW 12XSPL-D232.5 -2.40.736 +0.0540.4 -13.27.6 +0.187.1 +0.5close8 Ω vs 4 Ω: amp load changes+
Soundstream STEALTH-12429.98 -4.920.687 =59.5 +5.913 +5.584.8 -1.8close8 Ω vs 4 Ω: amp load changes+
Rockford Fosgate R2SD4-1230.3 -4.60.653 -0.0465.4 +11.86.9 -0.686.7 +0.1usable8 Ω vs 4 Ω: amp load changes · 250 W vs 350 W: lower power handling · Xmax 6.9 mm < 7.5 mm: lower excursion-limited SPL+

Compare the closest 3 against the GZIW 300X →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.