Hertz Audio ES 300

12" · 4 Ω · 350 W · 94 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	28 Hz
Qts	0.38
Qes	0.43
Qms	3.45
Vas	89.4 L
Sd	548 cm²
Xmax	9 mm
Re	2.93 Ω
Bl	13.46 T·m
Mms	151.2 g
Pe	350 W
Sensitivity	94 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 36.3 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 Hertz Audio ES300	28 =	0.382 =	89.4 =	7.7 -1.3	93 -1	close	Xmax 7.7 mm < 9 mm: lower excursion-limited SPL	+
Auditor RIP 300P	28.9 +0.9	0.35 -0.03	79.3 -10.1	8.8 -0.2	92.6 -1.4	close	Xmax 8.8 mm < 9 mm: lower excursion-limited SPL	+
Focal 13W 8711	28.8 +0.8	0.328 -0.05	87.1 -2.3	7.9 -1.1	93.4 -0.6	close	Xmax 7.9 mm < 9 mm: lower excursion-limited SPL	+
Focal 13W 8711 vp	28.8 +0.8	0.328 -0.05	87.1 -2.3	7.9 -1.1	93.4 -0.6	close	Xmax 7.9 mm < 9 mm: lower excursion-limited SPL	+
Oxygen IN12 300	27 -1	0.362 -0.02	114.8 +25.4	8.7 -0.3	93.2 -0.8	close	Xmax 8.7 mm < 9 mm: lower excursion-limited SPL	+
Gladen ZERO 12 PRO	27 -1	0.38 =	93.72 +4.32	12.5 +3.5	88.5 -5.5	close		+
Dayton Audio QU4TRO 12"	27 -1	0.357 -0.02	120.1 +30.7	8.7 -0.3	93.6 -0.4	close	250 W vs 350 W: lower power handling · Xmax 8.7 mm < 9 mm: lower excursion-limited SPL	+
BMS 12N630	28.6 +0.6	0.33 -0.05	85.5 -3.9	8 -1	96 +2	close	8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 9 mm: lower excursion-limited SPL	+
Rythmik Audio DS1200	26 -2	0.444 +0.06	88 -1.4	8.8 -0.2	91.7 -2.3	close	Xmax 8.8 mm < 9 mm: lower excursion-limited SPL	+
Dayton Audio RSS315HF-4 v2016	24.2 -3.8	0.388 +0.01	84.1 -5.3	9.3 +0.3	90.3 -3.7	close		+

Compare the closest 3 against the ES 300 →

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.