Audax PR300T0

12" · 8 Ω · 100 W · 95.4 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	48 Hz
Qts	0.824
Qes	0.98
Qms	5.17
Vas	142 L
Sd	544 cm²
Xmax	3.5 mm
Re	5.9 Ω
Bl	7.6 T·m
Mms	32.1 g
Pe	100 W
Sensitivity	95.4 dB

Alignment hint

EBP	49 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
Fane SOVEREIGN 12-125	47 -1	0.796 -0.03	113.2 -28.8	4.9 +1.4	93.8 -1.6	close		+
Monacor SP-302E	39 -9	0.722 -0.1	141 -1	4 +0.5	95.3 -0.1	close	4 Ω vs 8 Ω: amp load changes	+
Eminence ALPHA 12	49 +1	0.775 -0.05	121.5 -20.5	2.4 -1.1	95.1 -0.3	usable	Xmax 2.4 mm < 3.5 mm: lower excursion-limited SPL	+
Eminence ALPHA 12 A	49 +1	0.775 -0.05	121.5 -20.5	2.4 -1.1	95.1 -0.3	usable	Xmax 2.4 mm < 3.5 mm: lower excursion-limited SPL	+
Eminence ALPHA-12A	49 +1	0.77 -0.05	121.5 -20.5	2.4 -1.1	95.6 +0.2	usable	Xmax 2.4 mm < 3.5 mm: lower excursion-limited SPL	+
Lanzar VW124/12D	40 -8	0.763 -0.06	147.4 +5.4	10 +6.5	95.5 +0.1	usable	4 Ω vs 8 Ω: amp load changes	+
Technysound TS 30/300 vp	44 -4	0.929 +0.11	178 +36	4 +0.5	94.4 -1	usable		+
Eminence ALPHA 12A	49 +1	0.77 -0.05	121.5 -20.5	2.4 -1.1	93.9 -1.5	usable	75 W vs 100 W: lower power handling · Xmax 2.4 mm < 3.5 mm: lower excursion-limited SPL	+
Electro-Voice SP12C	45 -3	0.665 -0.16	167.1 +25.1	4 +0.5	96.7 +1.3	usable	50 W vs 100 W: lower power handling	+
Cabasse 30BZ18 v2	38.5 -9.5	0.747 -0.08	154.7 +12.7	4 +0.5	92.8 -2.6	usable		+

Compare the closest 3 against the PR300T0 →

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.