Infinity REFERENCE 1240W
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 25.4 Hz |
| Qts | 0.47 |
| Qes | 0.5 |
| Qms | 7.6 |
| Vas | 84.4 L |
| Sd | 534 cm² |
| Xmax | 11.5 mm |
| Re | 3.4 Ω |
| Bl | 14.2 T·m |
| Mms | 187.6 g |
| Pe | 300 W |
| Sensitivity | 86.3 dB |
Alignment hint
| EBP | 51 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 66.8 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 |
|---|---|---|---|---|---|---|---|---|
| Infinity REFERENCE 1250W | 25.4 = | 0.47 = | 84.4 = | 11.5 = | 86.3 = | close | + | |
| JL Audio 12W6V2-D4 | 25 -0.4 | 0.45 -0.02 | 79.9 -4.5 | 12.7 +1.2 | 86.9 +0.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JL Audio 12W1V3-4 | 26.21 +0.81 | 0.5 +0.03 | 76.63 -7.77 | 11 -0.5 | 86.1 -0.2 | close | Xmax 11 mm < 11.5 mm: lower excursion-limited SPL | + |
| Focal AUDITOR RSB-300 | 25 -0.4 | 0.466 = | 93 +8.6 | 10.2 -1.3 | 87.4 +1.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 10.2 mm < 11.5 mm: lower excursion-limited SPL | + |
| Ground Zero GZUW 300SQ | 25.3 -0.1 | 0.423 -0.05 | 86.6 +2.2 | 12.9 +1.4 | 88 +1.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Dayton Audio RSS315HF-4 | 25 -0.4 | 0.489 +0.02 | 85.1 +0.7 | 10.1 -1.4 | 89.4 +3.1 | close | Xmax 10.1 mm < 11.5 mm: lower excursion-limited SPL | + |
| JL Audio 12W1V2-8 | 24.98 -0.42 | 0.458 -0.01 | 100.15 +15.75 | 9.5 -2 | 86.8 +0.5 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 9.5 mm < 11.5 mm: lower excursion-limited SPL | + |
| Infinity KAPPA PERFECT 12.1 | 23.32 -2.08 | 0.44 -0.03 | 99.97 +15.57 | 14.15 +2.65 | 86.2 -0.1 | close | + | |
| JL Audio 12W1V3-2 | 26.55 +1.15 | 0.52 +0.05 | 72 -12.4 | 11 -0.5 | 85.9 -0.4 | close | 2 Ω vs 4 Ω: amp load changes · Xmax 11 mm < 11.5 mm: lower excursion-limited SPL | + |
| Infinity REFERENCE 1260W | 23.5 -1.9 | 0.39 -0.08 | 83 -1.4 | 13 +1.5 | 86 -0.3 | close | + |
Compare the closest 3 against the REFERENCE 1240W →
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.