Audax PR380T2

15" · 4 Ω · 150 W · 99.4 dB

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	52 Hz
Qts	0.522
Qes	0.61
Qms	3.62
Vas	92 L
Sd	892 cm²
Xmax	2.7 mm
Re	3.1 Ω
Bl	13.7 T·m
Mms	113.6 g
Pe	150 W
Sensitivity	99.4 dB

Alignment hint

EBP	85 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 110.2 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
Audax PR380T0 vp_g	56.9 +4.9	0.537 +0.02	108.5 +16.5	2.8 +0.1	98.6 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
Eminence LEGEND CA154	51.1 -0.9	0.487 -0.04	108.2 +16.2	4.5 +1.8	100.6 +1.2	close		+
PD PD 156 v2014	50.3 -1.7	0.469 -0.05	93.4 +1.4	5.7 +3	97.2 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Precision Devices PD 156 v2014	50.3 -1.7	0.469 -0.05	93.4 +1.4	5.7 +3	97.2 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
RCF LF 15G302 vp baptiste	56.8 +4.8	0.561 +0.04	87 -5	6 +3.3	97.1 -2.3	usable	8 Ω vs 4 Ω: amp load changes	+
Beyma 15CMV2 v2021	49 -3	0.485 -0.04	104 +12	4.5 +1.8	96.7 -2.7	usable	8 Ω vs 4 Ω: amp load changes	+
Celestion TF1525E 4 Ohms	49.8 -2.2	0.493 -0.03	128.2 +36.2	3.5 +0.8	100.7 +1.3	usable		+
Beyma 15CM V2	49 -3	0.49 -0.03	104 +12	7 +4.3	97 -2.4	usable	8 Ω vs 4 Ω: amp load changes	+
JBL 615H	55 +3	0.603 +0.08	112 +20	3.7 +1	98.1 -1.3	usable	8 Ω vs 4 Ω: amp load changes	+
Celestion TF 1525E	49.8 -2.2	0.493 -0.03	128.2 +36.2	3.5 +0.8	97.6 -1.8	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the PR380T2 →

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.