Audax HD30P45TSMC

12" · 8 Ω · 90 W · 94.4 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	17 Hz
Qts	0.231
Qes	0.27
Qms	1.62
Vas	627 L
Sd	530 cm²
Xmax	4.5 mm
Re	5.2 Ω
Bl	10.6 T·m
Mms	55 g
Pe	90 W
Sensitivity	94.4 dB

Alignment hint

EBP	63 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 74.9 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 HD30P45TSMC2CA15	17 =	0.231 =	627 =	4.5 =	94.4 =	close		+
Focal 12V 617	15.4 -1.6	0.237 +0.01	611 -16	11.9 +7.4	93.5 -0.9	close		+
Audax HT300M2	17 =	0.236 =	927 +300	5 +0.5	96 +1.6	usable		+
Audax HIF30HSMC-2CA14 vp	19 +2	0.272 +0.04	645.4 +18.4	4 -0.5	95.6 +1.2	usable	50 W vs 90 W: lower power handling · Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Audax HIF30HSMC	19 +2	0.269 +0.04	645.5 +18.5	4 -0.5	92.7 -1.7	usable	50 W vs 90 W: lower power handling · Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Siare 31TE-2B	20.6 +3.6	0.264 +0.03	502 -125	5 +0.5	95.7 +1.3	usable		+
Siare 31SPCT	18 +1	0.238 +0.01	407 -220	4 -0.5	92.3 -2.1	usable	Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
Audax PR300M0	17 =	0.26 +0.03	1012 +385	4 -0.5	95.9 +1.5	usable	Xmax 4 mm < 4.5 mm: lower excursion-limited SPL	+
JBL 122A	17 =	0.232 =	339.8 -287.2	6.9 +2.4	91.9 -2.5	usable		+
Vifa M30W0-49-08	21 +4	0.225 -0.01	400 -227	6 +1.5	95.2 +0.8	usable		+

Compare the closest 3 against the HD30P45TSMC →

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.