Audax HT300Z4

12" · 4 Ω · 100 W · 96.3 dB

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	25 Hz
Qts	0.288
Qes	0.3
Qms	6.9
Vas	193 L
Sd	514.7 cm²
Xmax	4 mm
Re	3 Ω
Bl	11.1 T·m
Mms	78 g
Pe	100 W
Sensitivity	96.3 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 38.4 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
Axon 12K01	25 =	0.289 =	191.8 -1.2	6.7 +2.7	95.4 -0.9	close		+
Great Plains Audio 3124 GPA	26 +1	0.288 =	186.9 -6.1	6.4 +2.4	93.1 -3.2	close	8 Ω vs 4 Ω: amp load changes	+
Altec 3124	26 +1	0.288 =	186.9 -6.1	6.4 +2.4	92.9 -3.4	close	8 Ω vs 4 Ω: amp load changes	+
Fostex W 300 A	25 =	0.281 -0.01	227 +34	4.6 +0.6	93.4 -2.9	close	8 Ω vs 4 Ω: amp load changes · 50 W vs 100 W: lower power handling	+
Fostex W 300 AII	25 =	0.281 -0.01	227 +34	4.6 +0.6	93.4 -2.9	close	8 Ω vs 4 Ω: amp load changes · 50 W vs 100 W: lower power handling	+
Jensen RS12045SW	25 =	0.3 +0.01	220 +27	11 +7	95.6 -0.7	close		+
Scan-Speak 32W/4878T01	23 -2	0.286 =	170 -23	7 +3	94.5 -1.8	close		+
MCM Electronics 55-1465 DVC 8 Ohms en série 16 Oh	25 =	0.29 =	203.8 +10.8	5 +1	90.3 -6	close	16 Ω vs 4 Ω: amp load changes	+
TVM ARN 312-00/4	22 -3	0.289 =	206 +13	6.4 +2.4	93.8 -2.5	close		+
Eton 12-680/A8/62 HEX SYMPHONIE II	26 +1	0.296 +0.01	173 -20	6 +2	92.8 -3.5	close	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the HT300Z4 →

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.