JBL W15GTI MK2

15" · 4 Ω · 800 W · 92.5 dB

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	25.2 Hz
Qts	0.476
Qes	0.51
Qms	7.2
Vas	132.2 L
Sd	780 cm²
Xmax	10.2 mm
Re	2.95 Ω
Bl	15.4 T·m
Mms	257.3 g
Pe	800 W
Sensitivity	92.5 dB

Alignment hint

EBP	49 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 109.5 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
JBL W15GTI	25.2 =	0.476 =	132.2 =	10.2 =	92.5 =	close		+
Dayton Audio TIT400C	24.2 -1	0.483 +0.01	154.3 +22.1	13.3 +3.1	91.5 -1	close		+
Audiobahn AW1571T	28.2 +3	0.49 +0.01	133.088 +0.89	11 +0.8	89.2 -3.3	close	500 W vs 800 W: lower power handling	+
TC Sounds LMS R15	23.6 -1.6	0.446 -0.03	123 -9.2	12.1 +1.9	90.2 -2.3	close		+
JBL GTO 1514	25.1 -0.1	0.484 +0.01	153.5 +21.3	7.3 -2.9	91.9 -0.6	close	350 W vs 800 W: lower power handling · Xmax 7.3 mm < 10.2 mm: lower excursion-limited SPL	+
JBL P1520	25.4 +0.2	0.502 +0.03	118.9 -13.3	8.1 -2.1	90.8 -1.7	close	400 W vs 800 W: lower power handling · Xmax 8.1 mm < 10.2 mm: lower excursion-limited SPL	+
JBL P1520e	25.4 +0.2	0.502 +0.03	118.9 -13.3	8.1 -2.1	90.8 -1.7	close	400 W vs 800 W: lower power handling · Xmax 8.1 mm < 10.2 mm: lower excursion-limited SPL	+
JL Audio 13W7AE-D1.5	23.5 -1.7	0.448 -0.03	104.3 -27.9	12.1 +1.9	91.7 -0.8	close		+
Stereo Integrity SQL-15 15	23.8 -1.4	0.418 -0.06	115 -17.2	12.1 +1.9	90.9 -1.6	usable		+
Ground Zero GZHW 38X	22.6 -2.6	0.43 -0.05	147 +14.8	12.5 +2.3	90.3 -2.2	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the W15GTI MK2 →

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.