Infinity KAPPA PERFECT 12.1
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 23.32 Hz |
| Qts | 0.44 |
| Qes | 0.46 |
| Qms | 10.28 |
| Vas | 99.97 L |
| Sd | 531 cm² |
| Xmax | 14.15 mm |
| Re | 4 Ω |
| Bl | 16.9 T·m |
| Mms | 224 g |
| Pe | 350 W |
| Sensitivity | 86.2 dB |
Alignment hint
| EBP | 51 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 63.2 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 RSS315HFA-8 v2016 | 22.2 -1.12 | 0.444 = | 97.2 -2.77 | 11 -3.15 | 85.8 -0.4 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 11 mm < 14.15 mm: lower excursion-limited SPL | + |
| Infinity REFERENCE 1260W | 23.5 +0.18 | 0.39 -0.05 | 83 -16.97 | 13 -1.15 | 86 -0.2 | close | Xmax 13 mm < 14.15 mm: lower excursion-limited SPL | + |
| JL Audio 12W6V2-D4 | 25 +1.68 | 0.45 +0.01 | 79.9 -20.07 | 12.7 -1.45 | 86.9 +0.7 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 12.7 mm < 14.15 mm: lower excursion-limited SPL | + |
| Blaupunkt VCS 1200 | 23 -0.32 | 0.487 +0.05 | 102 +2.03 | 13 -1.15 | 89.9 +3.7 | close | Xmax 13 mm < 14.15 mm: lower excursion-limited SPL | + |
| Tang Band WQ-1858 | 20 -3.32 | 0.451 +0.01 | 116 +16.03 | 13.3 -0.85 | 85.3 -0.9 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 13.3 mm < 14.15 mm: lower excursion-limited SPL | + |
| Ground Zero GZUW 300SQ | 25.3 +1.98 | 0.423 -0.02 | 86.6 -13.37 | 12.9 -1.25 | 88 +1.8 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 12.9 mm < 14.15 mm: lower excursion-limited SPL | + |
| JL Audio 12W1V2-8 | 24.98 +1.66 | 0.458 +0.02 | 100.15 +0.18 | 9.5 -4.65 | 86.8 +0.6 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 9.5 mm < 14.15 mm: lower excursion-limited SPL | + |
| JL Audio 12W1V2-4 | 23.68 +0.36 | 0.414 -0.03 | 105.876 +5.91 | 9.5 -4.65 | 86.9 +0.7 | close | Xmax 9.5 mm < 14.15 mm: lower excursion-limited SPL | + |
| Soundstream R1-12 | 21.5 -1.82 | 0.465 +0.03 | 81.1 -18.87 | 18 +3.85 | 84.8 -1.4 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JL Audio 13W6V2-D4 | 24.3 +0.98 | 0.434 -0.01 | 111.6 +11.63 | 10.6 -3.55 | 88.3 +2.1 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 10.6 mm < 14.15 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the KAPPA PERFECT 12.1 →
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.