Sony XS-L122P5S

12" · 4 Ω · 380 W · 91.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	24.8 Hz
Qts	0.369
Qes	0.39
Qms	7.02
Vas	86.7 L
Sd	508.5 cm²
Xmax	5.7 mm
Re	3.3 Ω
Bl	15.1 T·m
Mms	172.2 g
Pe	380 W
Sensitivity	91.1 dB

Alignment hint

EBP	64 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 32.4 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
Tang Band WQ-760C	25 +0.2	0.372 =	95.4 +8.7	6 +0.3	91.7 +0.6	close	300 W vs 380 W: lower power handling	+
Dayton Audio RSS315HF-4 v2016	24.2 -0.6	0.388 +0.02	84.1 -2.6	9.3 +3.6	90.3 -0.8	close		+
Infinity 1260W	23.5 -1.3	0.387 +0.02	83 -3.7	6.5 +0.8	89.7 -1.4	close	300 W vs 380 W: lower power handling	+
Dayton Audio DCS305-4 v2015	24.2 -0.6	0.396 +0.03	92.3 +5.6	8.4 +2.7	90.7 -0.4	close	250 W vs 380 W: lower power handling	+
Dayton Audio DCS305-4 v2017	24.2 -0.6	0.396 +0.03	92.3 +5.6	8.4 +2.7	90.7 -0.4	close	250 W vs 380 W: lower power handling	+
Dayton Audio DCS305-4 v2018	24.2 -0.6	0.396 +0.03	92.3 +5.6	8.4 +2.7	90.7 -0.4	close	250 W vs 380 W: lower power handling	+
Dayton Audio DCS305-4 v2021	24.2 -0.6	0.396 +0.03	92.3 +5.6	8.4 +2.7	90.7 -0.4	close	250 W vs 380 W: lower power handling	+
Rockford Fosgate RFR2212	24 -0.8	0.376 +0.01	93 +6.3	13 +7.3	90.5 -0.6	close		+
JBL CS1204	24.8 =	0.429 +0.06	91.1 +4.4	6.3 +0.6	90.3 -0.8	close	250 W vs 380 W: lower power handling	+
Focal SUB12	24 -0.8	0.407 +0.04	90 +3.3	9.8 +4.1	90.7 -0.4	close	300 W vs 380 W: lower power handling	+

Compare the closest 3 against the XS-L122P5S →

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.