Infinity KAPPA CS 120 LB
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 29 Hz |
| Qts | 0.485 |
| Qes | 0.513 |
| Qms | 8.757 |
| Vas | 161.4 L |
| Sd | 530 cm² |
| Xmax | 6.7 mm |
| Re | 3.6 Ω |
| Bl | 9.7 T·m |
| Mms | 73.5 g |
| Pe | 250 W |
| Sensitivity | 94.3 dB |
Alignment hint
| EBP | 57 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 143.4 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 |
|---|---|---|---|---|---|---|---|---|
| Peerless SLS12 830669 | 28 -1 | 0.474 -0.01 | 172.4 +11 | 6.8 +0.1 | 92.2 -2.1 | close | 8 Ω vs 4 Ω: amp load changes · 100 W vs 250 W: lower power handling | + |
| Beyma 12"BR70 | 31 +2 | 0.5 +0.02 | 142 -19.4 | 8 +1.3 | 93 -1.3 | close | 8 Ω vs 4 Ω: amp load changes · 125 W vs 250 W: lower power handling | + |
| Celestion PULSE XL 12.20 | 35.1 +6.1 | 0.503 +0.02 | 153.3 -8.1 | 8.3 +1.6 | 94.2 -0.1 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Faital PRO 12FE330 | 33 +4 | 0.45 -0.03 | 146.7 -14.7 | 8.32 +1.62 | 94 -0.3 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Beyma 12BR70 v2014 | 31 +2 | 0.497 +0.01 | 142 -19.4 | 6 -0.7 | 92.3 -2 | close | 8 Ω vs 4 Ω: amp load changes · 125 W vs 250 W: lower power handling · Xmax 6 mm < 6.7 mm: lower excursion-limited SPL | + |
| Beyma 12BR70 v2015 | 31 +2 | 0.497 +0.01 | 142 -19.4 | 6 -0.7 | 92.3 -2 | close | 8 Ω vs 4 Ω: amp load changes · 125 W vs 250 W: lower power handling · Xmax 6 mm < 6.7 mm: lower excursion-limited SPL | + |
| Visaton W300-8 | 32 +3 | 0.449 -0.04 | 190 +28.6 | 7 +0.3 | 93.4 -0.9 | close | 8 Ω vs 4 Ω: amp load changes · 150 W vs 250 W: lower power handling | + |
| Monacor SPH-300KE vp2 | 27.6 -1.4 | 0.489 = | 139.3 -22.1 | 6.5 -0.2 | 90.4 -3.9 | close | 8 Ω vs 4 Ω: amp load changes · 120 W vs 250 W: lower power handling · Xmax 6.5 mm < 6.7 mm: lower excursion-limited SPL | + |
| Eminence LEGEND BP122 8 Ohms | 35 +6 | 0.537 +0.05 | 157.4 -4 | 6.2 -0.5 | 94.2 -0.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 6.2 mm < 6.7 mm: lower excursion-limited SPL | + |
| HiVi W12 | 28 -1 | 0.419 -0.07 | 156 -5.4 | 6.9 +0.2 | 91.1 -3.2 | close | 8 Ω vs 4 Ω: amp load changes · 150 W vs 250 W: lower power handling | + |
Compare the closest 3 against the KAPPA CS 120 LB →
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.