Sony XS-L154P5B

15" · 4 Ω · 400 W · 90.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	25.6 Hz
Qts	0.607
Qes	0.66
Qms	7.54
Vas	132.4 L
Sd	784.3 cm²
Xmax	5.6 mm
Re	3.91 Ω
Bl	15.5 T·m
Mms	251.7 g
Pe	400 W
Sensitivity	90.4 dB

Alignment hint

EBP	39 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 370.8 L

EBP < 50: favours a sealed (closed) 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
Sony XS-L156P5	25 -0.6	0.622 +0.02	109.9 -22.5	5.5 -0.1	90.2 -0.2	close	Xmax 5.5 mm < 5.6 mm: lower excursion-limited SPL	+
JBL GT5-15	27.3 +1.7	0.671 +0.06	106.5 -25.9	6.3 +0.7	90 -0.4	close	300 W vs 400 W: lower power handling	+
JBL P1520	25.4 -0.2	0.502 -0.1	118.9 -13.5	8.1 +2.5	90.8 +0.4	close		+
JBL P1520e	25.4 -0.2	0.502 -0.1	118.9 -13.5	8.1 +2.5	90.8 +0.4	close		+
Monacor SONIC 15 MK2	22 -3.6	0.577 -0.03	119 -13.4	6.3 +0.7	88.2 -2.2	usable		+
Soundstream R1-15	23.7 -1.9	0.62 +0.01	136.6 +4.2	17.2 +11.6	87.2 -3.2	usable	8 Ω vs 4 Ω: amp load changes	+
MTX Audio T615-44	26.2 +0.6	0.498 -0.11	113 -19.4	5.6 =	88.8 -1.6	usable	8 Ω vs 4 Ω: amp load changes · 250 W vs 400 W: lower power handling	+
MTX Audio T6154A	30 +4.4	0.55 -0.06	132.2 -0.2	7.9 +2.3	93.5 +3.1	usable		+
JBL W15GTI	25.2 -0.4	0.476 -0.13	132.2 -0.2	10.2 +4.6	92.5 +2.1	usable		+
JBL W15GTI MK2	25.2 -0.4	0.476 -0.13	132.2 -0.2	10.2 +4.6	92.5 +2.1	usable		+

Compare the closest 3 against the XS-L154P5B →

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.