SICA 10 FE 2.5 CP 4 Ohms

10" · 4 Ω · 300 W · 99.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	51 Hz
Qts	0.301
Qes	0.32
Qms	5.01
Vas	47.7 L
Sd	346.4 cm²
Xmax	5.7 mm
Re	3.1 Ω
Bl	10.3 T·m
Mms	34.3 g
Pe	300 W
Sensitivity	99.1 dB

Alignment hint

EBP	159 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 10.6 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
18 Sound 10W500	53 +2	0.29 -0.01	45.2 -2.5	5.5 -0.2	98 -1.1	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 5.7 mm: lower excursion-limited SPL	+
18 Sound 10NW650	51 =	0.28 -0.02	48 +0.3	7 +1.3	96 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Sica 10 N 3 PL	51 =	0.29 -0.01	40.5 -7.2	5.5 -0.2	96.1 -3	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 5.7 mm: lower excursion-limited SPL	+
Beyma 10WR300	47 -4	0.287 -0.01	50.5 +2.8	5.8 +0.1	95.5 -3.6	close	8 Ω vs 4 Ω: amp load changes	+
18 Sound 10NW650	51 =	0.27 -0.03	50 +2.3	7 +1.3	95.5 -3.6	close	16 Ω vs 4 Ω: amp load changes	+
Faital PRO 10PR320	48 -3	0.29 -0.01	52.7 +5	7.37 +1.67	96 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 10"G40	45 -6	0.3 =	49 +1.3	7 +1.3	95 -4.1	close	8 Ω vs 4 Ω: amp load changes	+
SICA 10 S 3 CP 4 Ohms	44 -7	0.281 -0.02	51.3 +3.6	7 +1.3	97.7 -1.4	close		+
SICA 10 L 2.5 SL 4 Ohms	56.5 +5.5	0.295 -0.01	46.9 -0.8	4 -1.7	99.8 +0.7	close	Xmax 4 mm < 5.7 mm: lower excursion-limited SPL	+
Beyma 10MW/ND	47 -4	0.26 -0.04	48 +0.3	5.9 +0.2	96.3 -2.8	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 10 FE 2.5 CP 4 Ohms →

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.