Sica 12 L1 2.5 SL

12" · 8 Ω · 300 W · 97.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	47.5 Hz
Qts	0.36
Qes	0.38
Qms	7.5
Vas	81.8 L
Sd	490.9 cm²
Xmax	3.7 mm
Re	5.5 Ω
Bl	14.2 T·m
Mms	47 g
Pe	300 W
Sensitivity	97.3 dB

Alignment hint

EBP	125 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 28.6 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
SICA PL 12 B 3 S	46.7 -0.8	0.356 =	79.3 -2.5	5.5 +1.8	97.1 -0.2	close		+
SICA 12 E 2 CS Z007660	47.5 =	0.364 =	76.9 -4.9	4 +0.3	95.8 -1.5	close	200 W vs 300 W: lower power handling	+
B&C 12 FCX 76	47 -0.5	0.339 -0.02	82 +0.2	5 +1.3	97.6 +0.3	close		+
SICA 12 E 2 CS	48 +0.5	0.364 =	76.9 -4.9	4 +0.3	95.9 -1.4	close	200 W vs 300 W: lower power handling	+
Faital PRO 12PR300 v2015	50 +2.5	0.357 =	79.2 -2.6	4.9 +1.2	98 +0.7	close		+
Audax PR330T2 4 Ohms	46.8 -0.7	0.354 -0.01	80.1 -1.7	3.4 -0.3	99.3 +2	close	4 Ω vs 8 Ω: amp load changes · 150 W vs 300 W: lower power handling · Xmax 3.4 mm < 3.7 mm: lower excursion-limited SPL	+
Eminence DELTA PRO 12 A	51 +3.5	0.353 -0.01	81.7 -0.1	6.2 +2.5	98.1 +0.8	close		+
Eminence DELTA PRO 12 A vp	51 +3.5	0.353 -0.01	81.7 -0.1	6.2 +2.5	98.1 +0.8	close		+
Eminence DELTA PRO 12	51 +3.5	0.353 -0.01	81.7 -0.1	3.2 -0.5	98.1 +0.8	close	Xmax 3.2 mm < 3.7 mm: lower excursion-limited SPL	+
Eminence DELTA PRO 12A	51 +3.5	0.35 -0.01	81.7 -0.1	4.6 +0.9	99.2 +1.9	close		+

Compare the closest 3 against the 12 L1 2.5 SL →

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.