Sica 12 SR 3 CP

12" · 8 Ω · 450 W · 92.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	37 Hz
Qts	0.4
Qes	0.46
Qms	2.96
Vas	60.9 L
Sd	490.9 cm²
Xmax	8 mm
Re	5.2 Ω
Bl	16.57 T·m
Mms	104 g
Pe	450 W
Sensitivity	92.2 dB

Alignment hint

EBP	80 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 28.7 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
SICA 12 SR 3 PL v2018	36 -1	0.418 +0.02	60.4 -0.5	7 -1	91.7 -0.5	close	Xmax 7 mm < 8 mm: lower excursion-limited SPL	+
Sica 12 SR 3 PL	36 -1	0.42 +0.02	60.4 -0.5	7 -1	91.8 -0.4	close	Xmax 7 mm < 8 mm: lower excursion-limited SPL	+
18 Sound 12NTLS3500	41 +4	0.41 +0.01	65 +4.1	7.9 -0.1	93.5 +1.3	close	Xmax 7.9 mm < 8 mm: lower excursion-limited SPL	+
Lavoce SSF122.50L	41 +4	0.41 +0.01	59 -1.9	11.5 +3.5	91.3 -0.9	close		+
Pioneer TS-W306C	32.6 -4.4	0.414 +0.01	55.6 -5.3	8.1 +0.1	92.8 +0.6	close	4 Ω vs 8 Ω: amp load changes	+
SICA 12 SR 3 CP v2018	36.8 -0.2	0.387 -0.01	64 +3.1	6 -2	92.5 +0.3	close	350 W vs 450 W: lower power handling · Xmax 6 mm < 8 mm: lower excursion-limited SPL	+
Celestion FTR12-4080DL/4	35.3 -1.7	0.428 +0.03	51.4 -9.5	8 =	92.5 +0.3	close	4 Ω vs 8 Ω: amp load changes	+
SICA 12 SR 3 CP v2020	37.8 +0.8	0.402 =	60.5 -0.4	5 -3	92.5 +0.3	close	350 W vs 450 W: lower power handling · Xmax 5 mm < 8 mm: lower excursion-limited SPL	+
JBL 1200 GTI	37 =	0.47 +0.07	56.7 -4.2	8 =	94.5 +2.3	close	4 Ω vs 8 Ω: amp load changes	+
Hifonics ZX1284	33 -4	0.38 -0.02	63 +2.1	9 +1	89.2 -3	close	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 12 SR 3 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.