Ground Zero GZTW 12MK2 vp
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 22.5 Hz |
| Qts | 0.484 |
| Qes | 0.55 |
| Qms | 4.04 |
| Vas | 148.6 L |
| Sd | 505 cm² |
| Xmax | 14.7 mm |
| Re | 4 Ω |
| Bl | 11.1 T·m |
| Mms | 120.4 g |
| Pe | 400 W |
| Sensitivity | 89.9 dB |
Alignment hint
| EBP | 41 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 131 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 |
|---|---|---|---|---|---|---|---|---|
| AE Speakers SBP12-8 | 23.6 +1.1 | 0.479 -0.01 | 160 +11.4 | 14 -0.7 | 89.5 -0.4 | close | Xmax 14 mm < 14.7 mm: lower excursion-limited SPL | + |
| AE Speakers IB12AU-4 | 24 +1.5 | 0.511 +0.03 | 160 +11.4 | 15.9 +1.2 | 92.4 +2.5 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Blaupunkt VCS 1200 | 23 +0.5 | 0.487 = | 102 -46.6 | 13 -1.7 | 89.9 = | close | 4 Ω vs 8 Ω: amp load changes · Xmax 13 mm < 14.7 mm: lower excursion-limited SPL | + |
| SB Acoustics SB34NRX75-6 vp fx | 22.9 +0.4 | 0.496 +0.01 | 181.3 +32.7 | 11 -3.7 | 90.6 +0.7 | close | 200 W vs 400 W: lower power handling · Xmax 11 mm < 14.7 mm: lower excursion-limited SPL | + |
| Peerless XXLS308 SWR 51 | 21.5 -1 | 0.448 -0.04 | 162.5 +13.9 | 11.5 -3.2 | 88.7 -1.2 | close | 175 W vs 400 W: lower power handling · Xmax 11.5 mm < 14.7 mm: lower excursion-limited SPL | + |
| Adire Audio SHIVA MK II - DVC Parallèle | 22 -0.5 | 0.385 -0.1 | 158 +9.4 | 14.1 -0.6 | 92.7 +2.8 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 14.1 mm < 14.7 mm: lower excursion-limited SPL | + |
| Morel UW 1258 | 21 -1.5 | 0.431 -0.05 | 138.4 -10.2 | 12.5 -2.2 | 86.3 -3.6 | usable | Xmax 12.5 mm < 14.7 mm: lower excursion-limited SPL | + |
| Eminence LAB 12 | | 22 -0.5 | 0.38 -0.1 | 125.2 -23.4 | 13 -1.7 | 89.2 -0.7 | usable | 6 Ω vs 8 Ω: amp load changes · Xmax 13 mm < 14.7 mm: lower excursion-limited SPL | + |
| Sony XS-L121P5S | 22.6 +0.1 | 0.51 +0.03 | 102.1 -46.5 | 11.5 -3.2 | 89 -0.9 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 11.5 mm < 14.7 mm: lower excursion-limited SPL | + |
| Adire Audio SHIVA MK I - DVC Parallèle | 23 +0.5 | 0.386 -0.1 | 163 +14.4 | 14 -0.7 | 93.4 +3.5 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 14.7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the GZTW 12MK2 vp →
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.