Audax PR330T2 4 Ohms

12" · 4 Ω · 150 W · 99.3 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	46.8 Hz
Qts	0.354
Qes	0.45
Qms	1.65
Vas	80.1 L
Sd	538 cm²
Xmax	3.4 mm
Re	2.7 Ω
Bl	10.2 T·m
Mms	58.6 g
Pe	150 W
Sensitivity	99.3 dB

Alignment hint

EBP	104 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 26.8 L

EBP > 100: favours a ported (bass-reflex) 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
Sica 12 L1 2.5 SL	47.5 +0.7	0.36 +0.01	81.8 +1.7	3.7 +0.3	97.3 -2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence DELTA PRO 12A	51 +4.2	0.35 =	81.7 +1.6	4.6 +1.2	99.2 -0.1	close	8 Ω vs 4 Ω: amp load changes	+
SICA PL 12 B 3 S	46.7 -0.1	0.356 =	79.3 -0.8	5.5 +2.1	97.1 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence DELTA PRO 12	51 +4.2	0.353 =	81.7 +1.6	3.2 -0.2	98.1 -1.2	close	8 Ω vs 4 Ω: amp load changes · Xmax 3.2 mm < 3.4 mm: lower excursion-limited SPL	+
Faital PRO 12PR300 v2015	50 +3.2	0.357 =	79.2 -0.9	4.9 +1.5	98 -1.3	close	8 Ω vs 4 Ω: amp load changes	+
B&C 12 FCX 76	47 +0.2	0.339 -0.01	82 +1.9	5 +1.6	97.6 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
RCF MB 12N251	50 +3.2	0.338 -0.02	83 +2.9	5 +1.6	98.5 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
Eminence DELTA PRO 12 A	51 +4.2	0.353 =	81.7 +1.6	6.2 +2.8	98.1 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
Eminence DELTA PRO 12 A vp	51 +4.2	0.353 =	81.7 +1.6	6.2 +2.8	98.1 -1.2	close	8 Ω vs 4 Ω: amp load changes	+
SICA 12 E 2 CS Z007660	47.5 +0.7	0.364 +0.01	76.9 -3.2	4 +0.6	95.8 -3.5	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the PR330T2 4 Ohms →

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.