Hertz Audio ES380.1

15" · 4 Ω · 450 W · 88.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	24.2 Hz
Qts	0.52
Qes	0.6
Qms	3.93
Vas	183 L
Sd	847 cm²
Xmax	9 mm
Re	2.9 Ω
Bl	13.28 T·m
Mms	240.2 g
Pe	450 W
Sensitivity	88.2 dB

Alignment hint

EBP	40 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 215.5 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
Rockford Fosgate P1S2-15	23 -1.2	0.55 +0.03	191.5 +8.5	9 =	87.4 -0.8	close	2 Ω vs 4 Ω: amp load changes · 250 W vs 450 W: lower power handling	+
Rockford Fosgate P1S4-15	23 -1.2	0.55 +0.03	191.5 +8.5	9 =	87.3 -0.9	close	250 W vs 450 W: lower power handling	+
Powerbass M-1504	22 -2.2	0.442 -0.08	181.7 -1.3	11 +2	87.7 -0.5	close		+
GRS 15SSW-4HE	20.7 -3.5	0.487 -0.03	196.6 +13.6	9.5 +0.5	89.8 +1.6	close	8 Ω vs 4 Ω: amp load changes · 300 W vs 450 W: lower power handling	+
Rockford Fosgate P3D4-15	22.4 -1.8	0.566 +0.05	155.8 -27.2	11 +2	87.3 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
Rockford Fosgate P115S4	24 -0.2	0.62 +0.1	172 -11	8 -1	87.3 -0.9	close	200 W vs 450 W: lower power handling · Xmax 8 mm < 9 mm: lower excursion-limited SPL	+
Oxygen AIR2 380	22.7 -1.5	0.543 +0.02	202.2 +19.2	11.5 +2.5	91.6 +3.4	close		+
Hertz Audio ES380	24 -0.2	0.52 =	220 +37	9 =	93.7 +5.5	close		+
Dayton Audio TIT400C	24.2 =	0.483 -0.04	154.3 -28.7	13.3 +4.3	91.5 +3.3	usable		+
Sony XS-L151P5	22.2 -2	0.46 -0.06	195.9 +12.9	7 -2	88.2 =	usable	Xmax 7 mm < 9 mm: lower excursion-limited SPL	+

Compare the closest 3 against the ES380.1 →

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.