hertz Hertz Audio ES300

12" · 4 Ω · 350 W · 93 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	28 Hz
Qts	0.382
Qes	0.43
Qms	3.45
Vas	89.4 L
Sd	561.9 cm²
Xmax	7.7 mm
Re	2.9 Ω
Bl	13.8 T·m
Mms	160 g
Pe	350 W
Sensitivity	93 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 36.8 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
Hertz Audio ES 300	28 =	0.38 =	89.4 =	9 +1.3	94 +1	close		+
Focal 13W 8711	28.8 +0.8	0.328 -0.05	87.1 -2.3	7.9 +0.2	93.4 +0.4	close		+
Focal 13W 8711 vp	28.8 +0.8	0.328 -0.05	87.1 -2.3	7.9 +0.2	93.4 +0.4	close		+
Auditor RIP 300P	28.9 +0.9	0.35 -0.03	79.3 -10.1	8.8 +1.1	92.6 -0.4	close		+
Oxygen IN12 300	27 -1	0.362 -0.02	114.8 +25.4	8.7 +1	93.2 +0.2	close		+
Focal 33V1	25.3 -2.7	0.326 -0.06	91.8 +2.4	7.5 -0.2	93 =	close	Xmax 7.5 mm < 7.7 mm: lower excursion-limited SPL	+
Dayton Audio DCS305-4 v2015	24.2 -3.8	0.396 +0.01	92.3 +2.9	8.4 +0.7	90.7 -2.3	close	250 W vs 350 W: lower power handling	+
Dayton Audio DCS305-4 v2017	24.2 -3.8	0.396 +0.01	92.3 +2.9	8.4 +0.7	90.7 -2.3	close	250 W vs 350 W: lower power handling	+
Dayton Audio DCS305-4 v2018	24.2 -3.8	0.396 +0.01	92.3 +2.9	8.4 +0.7	90.7 -2.3	close	250 W vs 350 W: lower power handling	+
Dayton Audio DCS305-4 v2021	24.2 -3.8	0.396 +0.01	92.3 +2.9	8.4 +0.7	90.7 -2.3	close	250 W vs 350 W: lower power handling	+

Compare the closest 3 against the ES300 →

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.