Sica 4 L 1 SL
Thiele-Small parameters
| Nominal size | 4" |
|---|---|
| Impedance | 8 Ω |
| Fs | 108.3 Hz |
| Qts | 0.63 |
| Qes | 0.78 |
| Qms | 3.15 |
| Vas | 1.2 L |
| Sd | 44.2 cm² |
| Xmax | 2.4 mm |
| Re | 6 Ω |
| Bl | 5.1 T·m |
| Mms | 5 g |
| Pe | 60 W |
| Sensitivity | 86.2 dB |
Alignment hint
| EBP | 139 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 4.6 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 |
|---|---|---|---|---|---|---|---|---|
| Eminence ALPHA 4-4 | 120 +11.7 | 0.63 = | 1.76 +0.56 | 2.6 +0.2 | 88 +1.8 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Eminence ALPHA 4-8 | 123 +14.7 | 0.75 +0.12 | 1.94 +0.74 | 2.6 +0.2 | 88 +1.8 | usable | + | |
| Faital PRO 4FE32 | 100 -8.3 | 0.61 -0.02 | 2.3 +1.1 | 2.73 +0.33 | 91 +4.8 | usable | 30 W vs 60 W: lower power handling | + |
| Sica 4 E 1 CS | 118 +9.7 | 0.39 -0.24 | 1.3 +0.1 | 2.2 -0.2 | 90.2 +4 | usable | Xmax 2.2 mm < 2.4 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE42 | 110 +1.7 | 0.47 -0.16 | 1.9 +0.7 | 2.83 +0.43 | 94 +7.8 | risky | 40 W vs 60 W: lower power handling | + |
| Sica 4 D 0.8 CS | 140 +31.7 | 0.92 +0.29 | 1.2 = | 1.3 -1.1 | 87.5 +1.3 | risky | 4 Ω vs 8 Ω: amp load changes · 35 W vs 60 W: lower power handling · Xmax 1.3 mm < 2.4 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE35 | 100 -8.3 | 0.83 +0.2 | 2.4 +1.2 | 2.73 +0.33 | 91 +4.8 | risky | 30 W vs 60 W: lower power handling | + |
| Faital PRO 4FE35 | 100 -8.3 | 0.73 +0.1 | 2.4 +1.2 | 1.73 -0.67 | 91 +4.8 | risky | 4 Ω vs 8 Ω: amp load changes · 30 W vs 60 W: lower power handling · Xmax 1.73 mm < 2.4 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE42 | 110 +1.7 | 0.38 -0.25 | 1.8 +0.6 | 2.83 +0.43 | 93 +6.8 | risky | 4 Ω vs 8 Ω: amp load changes · 40 W vs 60 W: lower power handling | + |
| Faital PRO 4FE32 | 100 -8.3 | 0.53 -0.1 | 2.5 +1.3 | 1.73 -0.67 | 91 +4.8 | risky | 4 Ω vs 8 Ω: amp load changes · 30 W vs 60 W: lower power handling · Xmax 1.73 mm < 2.4 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 4 L 1 SL →
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.