Sica 15 S 4 PL

15" · 8 Ω · 1200 W · 97.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	39.5 Hz
Qts	0.32
Qes	0.33
Qms	15.87
Vas	127.6 L
Sd	855.3 cm²
Xmax	10 mm
Re	5.1 Ω
Bl	22.52 T·m
Mms	132 g
Pe	1200 W
Sensitivity	97.8 dB

Alignment hint

EBP	120 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 32.9 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
18 Sound 15LW2400	40 +0.5	0.3 -0.02	131 +3.4	10 =	97 -0.8	close		+
Oberton 15NXB1201	38.49 -1.01	0.324 =	111.94 -15.66	12 +2	97 -0.8	close		+
Beyma 15LEX1200Nd	36 -3.5	0.3 -0.02	127 -0.6	11 +1	97 -0.8	close		+
Beyma 15LEX1000Fe	41 +1.5	0.34 +0.02	116 -11.6	11 +1	97 -0.8	close		+
RCF LF 15X401 v2013	41.8 +2.3	0.313 -0.01	116.4 -11.2	8.7 -1.3	98.1 +0.3	close	Xmax 8.7 mm < 10 mm: lower excursion-limited SPL	+
Peavey 15 LOW MAX	38.2 -1.3	0.352 +0.03	125.6 -2	9.8 -0.2	96 -1.8	close	Xmax 9.8 mm < 10 mm: lower excursion-limited SPL	+
B&C 15NBX100	36 -3.5	0.29 -0.03	125 -2.6	10 =	97 -0.8	close		+
Elokance 15WF2400	38 -1.5	0.32 =	165.2 +37.6	10.5 +0.5	98.1 +0.3	close		+
Peavey LO MAX 15 v2011	38.5 -1	0.352 +0.03	124 -3.6	9.2 -0.8	96.6 -1.2	close	Xmax 9.2 mm < 10 mm: lower excursion-limited SPL	+
Faital PRO 15FX600	38 -1.5	0.27 -0.05	128.3 +0.7	11.25 +1.25	98 +0.2	close	700 W vs 1200 W: lower power handling	+

Compare the closest 3 against the 15 S 4 PL →

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.