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Sica 4 E 1 CS

4" · 8 Ω · 70 W · 90.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size4"
Impedance8 Ω
Fs118 Hz
Qts0.39
Qes0.49
Qms1.85
Vas1.3 L
Sd44.2 cm²
Xmax2.2 mm
Re5.6 Ω
Bl5.76 T·m
Mms3.9 g
Pe70 W
Sensitivity90.2 dB

Alignment hint

EBP241 · ported
Sealed Vb (Qtc ≈ 0.71)≈ 0.6 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Faital PRO 4FE42110 -80.38 -0.011.8 +0.52.83 +0.6393 +2.8usable4 Ω vs 8 Ω: amp load changes · 40 W vs 70 W: lower power handling+
LaVoce WSN041.00-16106 -120.36 -0.031.96 +0.664.3 +2.191 +0.8usable16 Ω vs 8 Ω: amp load changes · 40 W vs 70 W: lower power handling+
Faital PRO 4FE42110 -80.47 +0.081.9 +0.62.83 +0.6394 +3.8usable40 W vs 70 W: lower power handling+
B&C 4NDF34110 -80.27 -0.121.6 +0.33.8 +1.692 +1.8usable+
LaVoce WSN041.00104 -140.3 -0.091.79 +0.494 +1.891.5 +1.3usable40 W vs 70 W: lower power handling+
Sica 4 L 1 SL108.3 -9.70.63 +0.241.2 -0.12.4 +0.286.2 -4usable+
Eminence ALPHA 4-4120 +20.63 +0.241.76 +0.462.6 +0.488 -2.2usable4 Ω vs 8 Ω: amp load changes · 55 W vs 70 W: lower power handling+
Faital PRO 4FE44150 +320.33 -0.061.1 -0.21.67 -0.5397 +6.8usable40 W vs 70 W: lower power handling · Xmax 1.67 mm < 2.2 mm: lower excursion-limited SPL+
Faital PRO 4FE32100 -180.61 +0.222.3 +12.73 +0.5391 +0.8risky30 W vs 70 W: lower power handling+
Faital PRO 4FE32100 -180.53 +0.142.5 +1.21.73 -0.4791 +0.8risky4 Ω vs 8 Ω: amp load changes · 30 W vs 70 W: lower power handling · Xmax 1.73 mm < 2.2 mm: lower excursion-limited SPL+

Compare the closest 3 against the 4 E 1 CS →

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.