JBL 1200GTI
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 37 Hz |
| Qts | 0.47 |
| Qes | 0.52 |
| Qms | 4.89 |
| Vas | 56.6 L |
| Sd | 548 cm² |
| Xmax | 5.46 mm |
| Re | 2.5 Ω |
| Bl | 12.48 T·m |
| Mms | 139.26 g |
| Pe | 600 W |
| Sensitivity | 88 dB |
Alignment hint
| EBP | 71 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 44.8 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Dayton Audio LS12-44 | 33.7 -3.3 | 0.503 +0.03 | 56.6 = | 5.6 +0.14 | 88.1 +0.1 | close | 8 Ω vs 4 Ω: amp load changes · 250 W vs 600 W: lower power handling | + |
| Sony XS-GTR121L | 35 -2 | 0.46 -0.01 | 50 -6.6 | 8.4 +2.94 | 88.3 +0.3 | close | 400 W vs 600 W: lower power handling | + |
| Pioneer TS-W306DVC | 32.9 -4.1 | 0.478 +0.01 | 51.8 -4.8 | 8.3 +2.84 | 88.9 +0.9 | close | 8 Ω vs 4 Ω: amp load changes · 400 W vs 600 W: lower power handling | + |
| JBL STADIUM 1224 | 29.7 -7.3 | 0.473 = | 52.6 -4 | 6 +0.54 | 88.7 +0.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JBL S3-1224 | 29.1 -7.9 | 0.473 = | 52.6 -4 | 6 +0.54 | 88.4 +0.4 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Klipsch SPL-120 | 31.1 -5.9 | 0.507 +0.04 | 58.4 +1.8 | 5.7 +0.24 | 89 +1 | close | 8 Ω vs 4 Ω: amp load changes · 200 W vs 600 W: lower power handling | + |
| Fountek FW322 - 8 Ohms | 40.1 +3.1 | 0.461 -0.01 | 53 -3.6 | 5 -0.46 | 91 +3 | close | 8 Ω vs 4 Ω: amp load changes · 300 W vs 600 W: lower power handling · Xmax 5 mm < 5.46 mm: lower excursion-limited SPL | + |
| JBL 1200 GTI | 37 = | 0.47 = | 56.7 +0.1 | 8 +2.54 | 94.5 +6.5 | close | + | |
| Pioneer TS-W126C(PREMIER) | 32.6 -4.4 | 0.42 -0.05 | 55.614 -0.99 | 8.7 +3.24 | 88.4 +0.4 | close | 400 W vs 600 W: lower power handling | + |
| Infinity 120.3SE | 28.4 -8.6 | 0.475 +0.01 | 55.6 -1 | 6.8 +1.34 | 89.5 +1.5 | close | 300 W vs 600 W: lower power handling | + |
Compare the closest 3 against the 1200GTI →
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.