Audax HT300M2

12" · 8 Ω · 120 W · 96 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	17 Hz
Qts	0.236
Qes	0.27
Qms	1.88
Vas	927 L
Sd	539.5 cm²
Xmax	5 mm
Re	5.4 Ω
Bl	9.1 T·m
Mms	38.6 g
Pe	120 W
Sensitivity	96 dB

Alignment hint

EBP	63 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 116.2 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 PR300M0	17 =	0.26 +0.02	1012 +85	4 -1	95.9 -0.1	close	Xmax 4 mm < 5 mm: lower excursion-limited SPL	+
Audax HD30P45TSMC	17 =	0.231 =	627 -300	4.5 -0.5	94.4 -1.6	usable	90 W vs 120 W: lower power handling · Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
Audax HD30P45TSMC2CA15	17 =	0.231 =	627 -300	4.5 -0.5	94.4 -1.6	usable	90 W vs 120 W: lower power handling · Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
Wharfedale W15RS	21.2 +4.2	0.185 -0.05	866.5 -60.5	6 +1	97.6 +1.6	usable	16 Ω vs 8 Ω: amp load changes · 50 W vs 120 W: lower power handling	+
Focal 12V 617	15.4 -1.6	0.237 =	611 -316	11.9 +6.9	93.5 -2.5	usable		+
Audax HIF30HSMC-2CA14 vp	19 +2	0.272 +0.04	645.4 -281.6	4 -1	95.6 -0.4	usable	50 W vs 120 W: lower power handling · Xmax 4 mm < 5 mm: lower excursion-limited SPL	+
Siare 31TE-2B	20.6 +3.6	0.264 +0.03	502 -425	5 =	95.7 -0.3	usable		+
Audax HIF30HSMC	19 +2	0.269 +0.03	645.5 -281.5	4 -1	92.7 -3.3	usable	50 W vs 120 W: lower power handling · Xmax 4 mm < 5 mm: lower excursion-limited SPL	+
Vifa M30W0-49-08	21 +4	0.225 -0.01	400 -527	6 +1	95.2 -0.8	usable		+
Siare 31SPCT	18 +1	0.238 =	407 -520	4 -1	92.3 -3.7	usable	Xmax 4 mm < 5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the HT300M2 →

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.