Infinity 120W.IB
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 32 Hz |
| Qts | 0.527 |
| Qes | 0.57 |
| Qms | 6.98 |
| Vas | 127 L |
| Sd | 510 cm² |
| Xmax | 8.1 mm |
| Re | 3 Ω |
| Bl | 8.7 T·m |
| Mms | 71 g |
| Pe | 200 W |
| Sensitivity | 94.9 dB |
Alignment hint
| EBP | 56 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 158.7 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 12"BR70 | 31 -1 | 0.5 -0.03 | 142 +15 | 8 -0.1 | 93 -1.9 | close | 8 Ω vs 4 Ω: amp load changes · 125 W vs 200 W: lower power handling · Xmax 8 mm < 8.1 mm: lower excursion-limited SPL | + |
| MTX Audio T4124A | 29.3 -2.7 | 0.549 +0.02 | 118.8 -8.2 | 8.4 +0.3 | 92.9 -2 | close | + | |
| Celestion PULSE XL 12.20 | 35.1 +3.1 | 0.503 -0.02 | 153.3 +26.3 | 8.3 +0.2 | 94.2 -0.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 12FE330 | 33 +1 | 0.45 -0.08 | 146.7 +19.7 | 8.32 +0.22 | 94 -0.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Peerless SLS12 830669 v2012 | 31 -1 | 0.536 +0.01 | 132.4 +5.4 | 6.1 -2 | 91.9 -3 | close | 8 Ω vs 4 Ω: amp load changes · 100 W vs 200 W: lower power handling · Xmax 6.1 mm < 8.1 mm: lower excursion-limited SPL | + |
| JBL P1200 | 30 -2 | 0.45 -0.08 | 123 -4 | 7.8 -0.3 | 92.8 -2.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.8 mm < 8.1 mm: lower excursion-limited SPL | + |
| Focal 33H | 29.4 -2.6 | 0.618 +0.09 | 124.4 -2.6 | 7.5 -0.6 | 92.5 -2.4 | usable | Xmax 7.5 mm < 8.1 mm: lower excursion-limited SPL | + |
| Eminence LEGEND BP122 8 Ohms | 35 +3 | 0.537 +0.01 | 157.4 +30.4 | 6.2 -1.9 | 94.2 -0.7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6.2 mm < 8.1 mm: lower excursion-limited SPL | + |
| JBL GT2-12 | 29.5 -2.5 | 0.42 -0.11 | 114.9 -12.1 | 8 -0.1 | 94.1 -0.8 | usable | Xmax 8 mm < 8.1 mm: lower excursion-limited SPL | + |
| JBL GT3-12 | 28.2 -3.8 | 0.541 +0.01 | 100.5 -26.5 | 8.2 +0.1 | 91.8 -3.1 | usable | + |
Compare the closest 3 against the 120W.IB →
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.