JBL 615H

15" · 8 Ω · 175 W · 98.1 dB

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	55 Hz
Qts	0.603
Qes	0.65
Qms	8.3
Vas	112 L
Sd	818.5 cm²
Xmax	3.7 mm
Re	5.56 Ω
Bl	14.4 T·m
Mms	70.2 g
Pe	175 W
Sensitivity	98.1 dB

Alignment hint

EBP	85 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 298.6 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
Celestion BL15-400X	54.2 -0.8	0.592 -0.01	110.9 -1.1	4.8 +1.1	97.3 -0.8	close		+
the box Speaker 15-300/8-A	52.6 -2.4	0.64 +0.04	100.3 -11.7	4.6 +0.9	96.8 -1.3	close		+
Audax PR380T0	52 -3	0.635 +0.03	130 +18	3.3 -0.4	97.1 -1	close	Xmax 3.3 mm < 3.7 mm: lower excursion-limited SPL	+
Focal 38KXSPL	45.8 -9.2	0.55 -0.05	116.4 +4.4	5.5 +1.8	98 -0.1	close	4 Ω vs 8 Ω: amp load changes	+
Audax PR380T0 vp_g	56.9 +1.9	0.537 -0.07	108.5 -3.5	2.8 -0.9	98.6 +0.5	close	Xmax 2.8 mm < 3.7 mm: lower excursion-limited SPL	+
RCF LF 15G302 vp baptiste	56.8 +1.8	0.561 -0.04	87 -25	6 +2.3	97.1 -1	usable		+
JBL MI-15	55 =	0.616 +0.01	169.9 +57.9	3.4 -0.3	99.1 +1	usable	Xmax 3.4 mm < 3.7 mm: lower excursion-limited SPL	+
JBL 2032H	57 +2	0.541 -0.06	133.1 +21.1	4.6 +0.9	100.9 +2.8	usable		+
Eminence LEGEND CA154	51.1 -3.9	0.487 -0.12	108.2 -3.8	4.5 +0.8	100.6 +2.5	usable	4 Ω vs 8 Ω: amp load changes	+
Celestion TF 1525E	49.8 -5.2	0.493 -0.11	128.2 +16.2	3.5 -0.2	97.6 -0.5	usable	Xmax 3.5 mm < 3.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 615H →

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.