Audax HT300G0

12" · 4 Ω · 225 W · 94.4 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	36.8 Hz
Qts	0.531
Qes	0.56
Qms	10.39
Vas	77.7 L
Sd	522.7 cm²
Xmax	6.6 mm
Re	3.2 Ω
Bl	11 T·m
Mms	92.2 g
Pe	225 W
Sensitivity	94.4 dB

Alignment hint

EBP	66 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 100.5 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
Oxygen SPIRAL 300	32 -4.8	0.56 +0.03	81 +3.3	7.6 +1	92 -2.4	close		+
Ciare HSB322-22 vp	42.5 +5.7	0.484 -0.05	77 -0.7	7.3 +0.7	96.4 +2	close		+
Magnat POWER BULL 300	33 -3.8	0.479 -0.05	82 +4.3	8.1 +1.5	93 -1.4	close		+
Focal 33V2	28.7 -8.1	0.537 +0.01	76.2 -1.5	7.5 +0.9	92.5 -1.9	close		+
Faital PRO 12PR320 16 Ohms	45 +8.2	0.522 -0.01	80.8 +3.1	7.3 +0.7	91.7 -2.7	close	16 Ω vs 4 Ω: amp load changes	+
Ciare HSB322-22	35 -1.8	0.42 -0.11	83 +5.3	7.5 +0.9	95 +0.6	usable		+
MTX Audio XT12-04	33 -3.8	0.56 +0.03	66 -11.7	6.5 -0.1	91.7 -2.7	usable	Xmax 6.5 mm < 6.6 mm: lower excursion-limited SPL	+
JBL 1200 GTI	37 +0.2	0.47 -0.06	56.7 -21	8 +1.4	94.5 +0.1	usable		+
Elder Audio 12LB075-UMOD	40 +3.2	0.472 -0.06	73 -4.7	5.5 -1.1	93.1 -1.3	usable	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 6.6 mm: lower excursion-limited SPL	+
Phoenix Gold RYVAL V12D	30 -6.8	0.552 +0.02	81.9 +4.2	6.4 -0.2	91.4 -3	usable	150 W vs 225 W: lower power handling · Xmax 6.4 mm < 6.6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the HT300G0 →

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.