Siemens KL405
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 75.8 Hz |
| Qts | 0.77 |
| Qes | 0.8 |
| Qms | 20.71 |
| Vas | 68 L |
| Sd | 660.5 cm² |
| Xmax | 3 mm |
| Re | 5.57 Ω |
| Bl | 11.5 T·m |
| Mms | 39.7 g |
| Pe | 200 W |
| Sensitivity | 99.2 dB |
Alignment hint
| EBP | 95 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
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 |
|---|---|---|---|---|---|---|---|---|
| Celestion F12-X200 | 75 -0.8 | 0.777 +0.01 | 47.3 -20.7 | 3 = | 97.1 -2.1 | close | + | |
| Sica 12 D 1.5 CS | 62 -13.8 | 0.75 -0.02 | 63.5 -4.5 | 2.7 -0.3 | 96.9 -2.3 | usable | 130 W vs 200 W: lower power handling · Xmax 2.7 mm < 3 mm: lower excursion-limited SPL | + |
| SICA 12 D 1.5 CS 8 Ohms | 62 -13.8 | 0.748 -0.02 | 63.5 -4.5 | 2.7 -0.3 | 96.8 -2.4 | usable | 100 W vs 200 W: lower power handling · Xmax 2.7 mm < 3 mm: lower excursion-limited SPL | + |
| Celestion TF 1215 | 62 -13.8 | 0.857 +0.09 | 69 +1 | 2.5 -0.5 | 96.2 -3 | usable | Xmax 2.5 mm < 3 mm: lower excursion-limited SPL | + |
| Mercuriale PTR 306 M0 | 58 -17.8 | 0.808 +0.04 | 70.1 +2.1 | 3.9 +0.9 | 94.6 -4.6 | usable | 150 W vs 200 W: lower power handling | + |
| Faital PRO 12PR310 | 55 -20.8 | 0.67 -0.1 | 65.1 -2.9 | 4.92 +1.92 | 98 -1.2 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| JBL 2142H | 72 -3.8 | 0.755 -0.02 | 45.3 -22.7 | 2.2 -0.8 | 96.5 -2.7 | usable | 100 W vs 200 W: lower power handling · Xmax 2.2 mm < 3 mm: lower excursion-limited SPL | + |
| Monacor SP-300GI | 65 -10.8 | 0.969 +0.2 | 75 +7 | 3.2 +0.2 | 94.9 -4.3 | usable | 150 W vs 200 W: lower power handling | + |
| Peavey S-12825 | 59.4 -16.4 | 0.611 -0.16 | 66.6 -1.4 | 2.5 -0.5 | 96.8 -2.4 | usable | Xmax 2.5 mm < 3 mm: lower excursion-limited SPL | + |
| Siare 31TE vp | 53.4 -22.4 | 0.746 -0.02 | 62 -6 | 4.1 +1.1 | 93.8 -5.4 | usable | 120 W vs 200 W: lower power handling | + |
Compare the closest 3 against the KL405 →
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.