Infinity KAPPA CS 120 BR
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 35.2 Hz |
| Qts | 0.397 |
| Qes | 0.42 |
| Qms | 7.31 |
| Vas | 123.2 L |
| Sd | 510 cm² |
| Xmax | 8 mm |
| Re | 3.17 Ω |
| Bl | 10.1 T·m |
| Mms | 60.6 g |
| Pe | 250 W |
| Sensitivity | 97.1 dB |
Alignment hint
| EBP | 84 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 56.7 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 |
|---|---|---|---|---|---|---|---|---|
| MCM Electronics 55-2982 | 36.2 +1 | 0.407 +0.01 | 121.7 -1.5 | 7 -1 | 93.9 -3.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 8 mm: lower excursion-limited SPL | + |
| GRS 12PT-8 | 35 -0.2 | 0.387 -0.01 | 112 -11.2 | 7.8 -0.2 | 93 -4.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.8 mm < 8 mm: lower excursion-limited SPL | + |
| McCauley 6232 | 35 -0.2 | 0.411 +0.01 | 106.2 -17 | 8.4 +0.4 | 93.6 -3.5 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Infinity 1211W | 35.1 -0.1 | 0.397 = | 123.3 +0.1 | 4.5 -3.5 | 97 -0.1 | close | 100 W vs 250 W: lower power handling · Xmax 4.5 mm < 8 mm: lower excursion-limited SPL | + |
| Beyma SM212 v2009 | 40 +4.8 | 0.373 -0.02 | 150 +26.8 | 8.2 +0.2 | 97.2 +0.1 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 12PR320 | 42 +6.8 | 0.37 -0.03 | 113.3 -9.9 | 7.37 -0.63 | 97 -0.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.37 mm < 8 mm: lower excursion-limited SPL | + |
| Faital PRO 12PR320-08 v2022 | 42 +6.8 | 0.371 -0.03 | 113 -10.2 | 7.1 -0.9 | 97.1 = | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.1 mm < 8 mm: lower excursion-limited SPL | + |
| Beyma SM212 vp Nº2 | 41.7 +6.5 | 0.41 +0.01 | 110.7 -12.5 | 7.3 -0.7 | 95.2 -1.9 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 8 mm: lower excursion-limited SPL | + |
| JBL GT2-12 | 29.5 -5.7 | 0.42 +0.02 | 114.9 -8.3 | 8 = | 94.1 -3 | usable | + | |
| Eminence KAPPALITE 3012 LF-4 | 36.4 +1.2 | 0.308 -0.09 | 107.4 -15.8 | 8.1 +0.1 | 97.2 +0.1 | usable | + |
Compare the closest 3 against the KAPPA CS 120 BR →
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.