Audax PR300 MO AP

12" · 8 Ω · 100 W · 94 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	25 Hz
Qts	0.468
Qes	0.527
Qms	4.2
Vas	457 L
Sd	510 cm²
Xmax	4.4 mm
Re	6.8 Ω
Bl	8.1 T·m
Mms	32.3 g
Pe	100 W
Sensitivity	94 dB

Alignment hint

EBP	47 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 356.2 L

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
Celestion T1600 vp 1	23.6 -1.4	0.463 -0.01	350 -107	4 -0.4	92.2 -1.8	usable	Xmax 4 mm < 4.4 mm: lower excursion-limited SPL	+
Davis 31TK12-M vp	27.8 +2.8	0.416 -0.05	376 -81	5 +0.6	94.5 +0.5	usable		+
Audax LFH507	20 -5	0.483 +0.01	513.5 +56.5	4.5 +0.1	92 -2	usable		+
Realistic 40-1025	21.5 -3.5	0.452 -0.02	526 +69	11.4 +7	93.3 -0.7	usable		+
Ciare HW320	27 +2	0.445 -0.02	293 -164	4.1 -0.3	93.4 -0.6	usable	Xmax 4.1 mm < 4.4 mm: lower excursion-limited SPL	+
Max Speaker PV-1230 4 Ohms	20 -5	0.452 -0.02	317 -140	4 -0.4	93.4 -0.6	usable	4 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 4.4 mm: lower excursion-limited SPL	+
Davis 31ST12M v2009	22 -3	0.39 -0.08	398 -59	9 +4.6	91.8 -2.2	usable		+
Cabasse 30BZ24 vp oriu1	30.3 +5.3	0.394 -0.07	363 -94	4 -0.4	94.6 +0.6	usable	16 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 4.4 mm: lower excursion-limited SPL	+
JBL 125A	25 =	0.433 -0.04	235 -222	4.8 +0.4	92.9 -1.1	usable	50 W vs 100 W: lower power handling	+
JBL 127A	25 =	0.433 -0.04	235 -222	4.8 +0.4	92.9 -1.1	usable	50 W vs 100 W: lower power handling	+

Compare the closest 3 against the PR300 MO AP →

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.