Ground Zero GZIW 300X
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 34.9 Hz |
| Qts | 0.69 |
| Qes | 0.768 |
| Qms | 6.82 |
| Vas | 53.6 L |
| Sd | 488 cm² |
| Xmax | 7.5 mm |
| Re | 3.49 Ω |
| Bl | 11.4 T·m |
| Mms | 130.5 g |
| Pe | 350 W |
| Sensitivity | 86.6 dB |
Alignment hint
| EBP | 45 · 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
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| Hertz Audio ES 300.5 | 35 +0.1 | 0.66 -0.03 | 48.5 -5.1 | 9 +1.5 | 86.6 = | close | + | |
| Infinity Kappa 123WDSSI 2Ohm | 34.2 -0.7 | 0.778 +0.09 | 58.6153 +5.02 | 10.2 +2.7 | 86.0429 -0.56 | close | 2 Ω vs 4 Ω: amp load changes | + |
| Powerbass S-12T | 34.4 -0.5 | 0.634 -0.06 | 45.92 -7.68 | 6.9 -0.6 | 85.8 -0.8 | close | Xmax 6.9 mm < 7.5 mm: lower excursion-limited SPL | + |
| Selenium 12SW3A DVC 2+2 | 35 +0.1 | 0.724 +0.03 | 49 -4.6 | 6.5 -1 | 89.6 +3 | close | Xmax 6.5 mm < 7.5 mm: lower excursion-limited SPL | + |
| Pioneer TS-W251R | 28.9 -6 | 0.68 -0.01 | 57.86 +4.26 | 7.8 +0.3 | 84.6 -2 | close | 120 W vs 350 W: lower power handling | + |
| Alpine SWE-1242 | 31 -3.9 | 0.66 -0.03 | 61 +7.4 | 11.7 +4.2 | 85.9 -0.7 | close | 250 W vs 350 W: lower power handling | + |
| hertz Hertz Audio ES300.5 | 35 +0.1 | 0.66 -0.03 | 48.5 -5.1 | 6.8 -0.7 | 90.8 +4.2 | close | Xmax 6.8 mm < 7.5 mm: lower excursion-limited SPL | + |
| Ground Zero GZIW 12XSPL-D2 | 32.5 -2.4 | 0.736 +0.05 | 40.4 -13.2 | 7.6 +0.1 | 87.1 +0.5 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Soundstream STEALTH-124 | 29.98 -4.92 | 0.687 = | 59.5 +5.9 | 13 +5.5 | 84.8 -1.8 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Rockford Fosgate R2SD4-12 | 30.3 -4.6 | 0.653 -0.04 | 65.4 +11.8 | 6.9 -0.6 | 86.7 +0.1 | usable | 8 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.