Sony XS-L103P5B

10" · 4 Ω · 300 W · 85.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	26.6 Hz
Qts	0.41
Qes	0.43
Qms	8.4
Vas	52.5 L
Sd	370 cm²
Xmax	6.2 mm
Re	3.3 Ω
Bl	12.7 T·m
Mms	132.3 g
Pe	300 W
Sensitivity	85.5 dB

Alignment hint

EBP	62 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 26.6 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
JL Audio 10W1V2-4	25.2 -1.4	0.405 =	50.4601 -2.04	9.906 +3.71	84.6 -0.9	close		+
JL Audio 10W1V2-8	26.5 -0.1	0.438 +0.03	49.1009 -3.4	9.906 +3.71	84.7 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
CSS Audio SDX10	26 -0.6	0.421 +0.01	53 +0.5	16.2 +10	88.5 +3	close		+
Wavecor SW280WA01	26 -0.6	0.401 -0.01	43 -9.5	6 -0.2	88.1 +2.6	close	200 W vs 300 W: lower power handling · Xmax 6 mm < 6.2 mm: lower excursion-limited SPL	+
SEAS L26ROY-XM001-04 v2018	25 -1.6	0.417 +0.01	56 +3.5	9.7 +3.5	88.7 +3.2	close		+
Dayton Audio RSS265HF-4 V2015	25.6 -1	0.452 +0.04	54 +1.5	9.4 +3.2	87.9 +2.4	close		+
Dayton Audio RSS265HF-8 v2018	24.9 -1.7	0.485 +0.08	52.5 =	9.4 +3.2	84.3 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio RSS265HF-4 v2022	25.6 -1	0.452 +0.04	54 +1.5	10.5 +4.3	88.3 +2.8	close		+
Dayton Audio RSS265HF-4 v2012	26.2 -0.4	0.441 +0.03	45 -7.5	9.4 +3.2	87.8 +2.3	close		+
JL Audio 10W0-8	25.6 -1	0.394 -0.02	69.4039 +16.9	8.636 +2.44	86.3 +0.8	close	8 Ω vs 4 Ω: amp load changes · 125 W vs 300 W: lower power handling	+

Compare the closest 3 against the XS-L103P5B →

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)

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