JBL 1500 GTI

15" · 4 Ω · 600 W · 100.6 dB

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	35 Hz
Qts	0.339
Qes	0.36
Qms	5.8
Vas	189 L
Sd	877 cm²
Xmax	8.2 mm
Re	2.5 Ω
Bl	13.4 T·m
Mms	118 g
Pe	600 W
Sensitivity	100.6 dB

Alignment hint

EBP	97 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 56.4 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
Eminence KAPPA PRO 15 LFC	37 +2	0.319 -0.02	183.2 -5.8	7.9 -0.3	100.3 -0.3	close	Xmax 7.9 mm < 8.2 mm: lower excursion-limited SPL	+
DLS SP15 DLS	33.2 -1.8	0.323 -0.02	191.7 +2.7	8.6 +0.4	103.1 +2.5	close	2 Ω vs 4 Ω: amp load changes	+
DLS SP15 - 2x2	33 -2	0.323 -0.02	191.7 +2.7	8.7 +0.5	103 +2.4	close	2 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH520-4	38 +3	0.337 =	156.6 -32.4	7.8 -0.4	100.6 =	close	Xmax 7.8 mm < 8.2 mm: lower excursion-limited SPL	+
Beyma 15LX60	35 =	0.346 +0.01	215 +26	9 +0.8	97.7 -2.9	close	8 Ω vs 4 Ω: amp load changes	+
PD PDN 15BR40	35.7 +0.7	0.338 =	224.8 +35.8	9.8 +1.6	98.5 -2.1	close	8 Ω vs 4 Ω: amp load changes	+
Precision Devices PDN 15BR40	35.7 +0.7	0.338 =	224.8 +35.8	9.8 +1.6	98.5 -2.1	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500	35 =	0.31 -0.03	199.2 +10.2	9.25 +1.05	98 -2.6	close	8 Ω vs 4 Ω: amp load changes	+
JBL 2265 HPL	37 +2	0.325 -0.01	176 -13	8 -0.2	97.9 -2.7	close	8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 8.2 mm: lower excursion-limited SPL	+
Eminence KAPPA PRO 15 LF-2	35 =	0.307 -0.03	198.8 +9.8	8.2 =	97.1 -3.5	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the 1500 GTI →

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.