Sica 6.5 H 1.5 CP

6.5" · 8 Ω · 120 W · 89.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	45.4 Hz
Qts	0.42
Qes	0.46
Qms	5.21
Vas	20.2 L
Sd	122.7 cm²
Xmax	6 mm
Re	6.1 Ω
Bl	7.02 T·m
Mms	13 g
Pe	120 W
Sensitivity	89.4 dB

Alignment hint

EBP	99 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 11 L

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
Beyma 6"B30/P	56 +10.6	0.5 +0.08	15.6 -4.6	5.5 -0.5	90 +0.6	usable	50 W vs 120 W: lower power handling · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 6NMFW	40 -5.4	0.34 -0.08	11 -9.2	9 +3	87 -2.4	usable		+
Oberton 6B150	55.04 +9.64	0.292 -0.13	14.61 -5.59	5.5 -0.5	92 +2.6	usable	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 6"P200/ND	56 +10.6	0.29 -0.13	11.9 -8.3	5.5 -0.5	92 +2.6	risky	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
B&C 6NDL38	69 +23.6	0.39 -0.03	7.1 -13.1	6 =	91 +1.6	risky	4 Ω vs 8 Ω: amp load changes	+
B&C 6NDL38	72 +26.6	0.42 =	7 -13.2	6 =	92 +2.6	risky		+
18 Sound 6ND430	61 +15.6	0.27 -0.15	12.6 -7.6	5 -1	92.5 +3.1	risky	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
B&C 6NDL38	70 +24.6	0.5 +0.08	8.9 -11.3	6 =	93 +3.6	risky	16 Ω vs 8 Ω: amp load changes	+
18 Sound 6ND430	66 +20.6	0.3 -0.12	12.6 -7.6	5 -1	94 +4.6	risky	16 Ω vs 8 Ω: amp load changes · Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 6P200Fe	58 +12.6	0.26 -0.16	11.1 -9.1	5 -1	93 +3.6	risky	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 6.5 H 1.5 CP →

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.