Sica 8 H 1.5 CS

8" · 8 Ω · 100 W · 88.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	50.5 Hz
Qts	0.72
Qes	0.94
Qms	2.98
Vas	26.9 L
Sd	213.8 cm²
Xmax	4 mm
Re	6.1 Ω
Bl	7.02 T·m
Mms	24 g
Pe	100 W
Sensitivity	88.9 dB

Alignment hint

EBP	54 · 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
Sica 8 H 1 CS	49.5 -1	0.54 -0.18	27.8 +0.9	4 =	90.7 +1.8	usable	70 W vs 100 W: lower power handling	+
LaVoce NBASS08-20-32	57 +6.5	0.67 -0.05	20.73 -6.17	6.4 +2.4	90 +1.1	usable	32 Ω vs 8 Ω: amp load changes	+
LaVoce FBASS08-18	53 +2.5	0.4 -0.32	23.64 -3.26	4.5 +0.5	92.5 +3.6	usable		+
LaVoce NBASS08-20	55 +4.5	0.48 -0.24	18.4 -8.5	6.5 +2.5	92 +3.1	usable		+
Sica 8 H 2 CP	39.1 -11.4	0.43 -0.29	35.9 +9	6.5 +2.5	89.7 +0.8	risky		+
Faital PRO 8FE300	70 +19.5	0.66 -0.06	14.4 -12.5	5.52 +1.52	95 +6.1	risky	16 Ω vs 8 Ω: amp load changes	+
B&C 8BG51	52 +1.5	0.4 -0.32	18 -8.9	6.5 +2.5	92 +3.1	risky		+
Eminence ALPHA-8A	73 +22.5	0.59 -0.13	17.7 -9.2	3.2 -0.8	94 +5.1	risky	Xmax 3.2 mm < 4 mm: lower excursion-limited SPL	+
Faital PRO 8RS340	42 -8.5	0.34 -0.38	25.5 -1.4	7.33 +3.33	91 +2.1	risky		+
18 Sound 8MB500	73 +22.5	0.5 -0.22	21.3 -5.6	6 +2	95 +6.1	risky	16 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 8 H 1.5 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.