Sica 12 S 4 PL
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40.4 Hz |
| Qts | 0.25 |
| Qes | 0.26 |
| Qms | 4.5 |
| Vas | 57 L |
| Sd | 530.9 cm² |
| Xmax | 7.5 mm |
| Re | 5.2 Ω |
| Bl | 23.5 T·m |
| Mms | 109 g |
| Pe | 1000 W |
| Sensitivity | 95.5 dB |
Alignment hint
| EBP | 155 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 8.1 L |
EBP > 100: favours a ported (bass-reflex) 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 |
|---|---|---|---|---|---|---|---|---|
| Sica 12 PFS 4 | 39 -1.4 | 0.26 +0.01 | 55.6 -1.4 | 9 +1.5 | 94.8 -0.7 | close | + | |
| 18 Sound 12NLW9410 | 42 +1.6 | 0.26 +0.01 | 55 -2 | 11 +3.5 | 95 -0.5 | close | + | |
| B&C 12NDL88-4 | 48 +7.6 | 0.24 -0.01 | 57 = | 8 +0.5 | 95.9 +0.4 | close | 4 Ω vs 8 Ω: amp load changes · 700 W vs 1000 W: lower power handling | + |
| B&C 12NDL88 | 48 +7.6 | 0.24 -0.01 | 57 = | 8 +0.5 | 97 +1.5 | close | 4 Ω vs 8 Ω: amp load changes · 700 W vs 1000 W: lower power handling | + |
| B&C 12 NBX 100 | 41 +0.6 | 0.226 -0.02 | 51 -6 | 6.6 -0.9 | 95.6 +0.1 | close | Xmax 6.6 mm < 7.5 mm: lower excursion-limited SPL | + |
| B&C 12NBX100 | 41 +0.6 | 0.22 -0.03 | 51 -6 | 10 +2.5 | 96 +0.5 | close | + | |
| Beyma 12 P1000/Nd | 47 +6.6 | 0.26 +0.01 | 49 -8 | 8 +0.5 | 96 +0.5 | close | + | |
| Beyma 12P1000ND | 47 +6.6 | 0.26 +0.01 | 49 -8 | 8 +0.5 | 94.6 -0.9 | close | 450 W vs 1000 W: lower power handling | + |
| RCF LF12X401 | 45 +4.6 | 0.27 +0.02 | 50 -7 | 9 +1.5 | 96.5 +1 | close | + | |
| RCF L 12P300 | 40 -0.4 | 0.242 -0.01 | 81 +24 | 7.8 +0.3 | 96.7 +1.2 | close | + |
Compare the closest 3 against the 12 S 4 PL →
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.