Sica 12 F 4 CP

12" · 8 Ω · 700 W · 97.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	46 Hz
Qts	0.2
Qes	0.21
Qms	6.24
Vas	52 L
Sd	530.9 cm²
Xmax	6 mm
Re	5.2 Ω
Bl	26.01 T·m
Mms	92.1 g
Pe	700 W
Sensitivity	97.8 dB

Alignment hint

EBP	219 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 4.5 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
RCF LF 12X401	45 -1	0.211 +0.01	50 -2	6.1 +0.1	97 -0.8	close		+
RCF LF 12N401	48 +2	0.205 =	50 -2	5.2 -0.8	97.8 =	close	Xmax 5.2 mm < 6 mm: lower excursion-limited SPL	+
B&C 12CL76	48 +2	0.21 +0.01	59 +7	6 =	98.5 +0.7	close	350 W vs 700 W: lower power handling	+
RCF MB 12N405	52 +6	0.203 =	53 +1	5.7 -0.3	99.5 +1.7	close	Xmax 5.7 mm < 6 mm: lower excursion-limited SPL	+
RCF MB 12N407	48 +2	0.194 -0.01	50 -2	4.7 -1.3	98.4 +0.6	close	Xmax 4.7 mm < 6 mm: lower excursion-limited SPL	+
RCF MB12N407	48 +2	0.194 -0.01	50 -2	4.7 -1.3	98.4 +0.6	close	Xmax 4.7 mm < 6 mm: lower excursion-limited SPL	+
Beyma 12"P80/Fe V2	48 +2	0.21 +0.01	61 +9	7.5 +1.5	99 +1.2	close		+
RCF CX12N351	58 +12	0.2 =	47 -5	6 =	98.2 +0.4	close	90 W vs 700 W: lower power handling	+
B&C 12NW100	42 -4	0.2 =	44 -8	9 +3	96 -1.8	close		+
B&C 12 NW 100	42 -4	0.198 =	44 -8	5.6 -0.4	95.8 -2	close	Xmax 5.6 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12 F 4 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.