MTX Audio XT12-04

12" · 4 Ω · 250 W · 91.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	33 Hz
Qts	0.56
Qes	0.6
Qms	8.5
Vas	66 L
Sd	543 cm²
Xmax	6.5 mm
Re	3.4 Ω
Bl	13.1 T·m
Mms	145.7 g
Pe	250 W
Sensitivity	91.7 dB

Alignment hint

EBP	55 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 111 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
JBL STAGE 1210	31.7 -1.3	0.55 -0.01	64.6 -1.4	6.6 +0.1	90.8 -0.9	close		+
Alpine SWS-1241	30 -3	0.563 =	65 -1	6.7 +0.2	90.1 -1.6	close		+
Oxygen SPIRAL 300	32 -1	0.56 =	81 +15	7.6 +1.1	92 +0.3	close		+
Focal P30	31.3 -1.7	0.508 -0.05	63.9 -2.1	7.4 +0.9	91 -0.7	close		+
Kenwood W1024DB	33 =	0.567 +0.01	51.3 -14.7	6.9 +0.4	91 -0.7	close		+
MTX Audio T5512-04	29.3 -3.7	0.583 +0.02	66.9 +0.9	7.3 +0.8	89.8 -1.9	close		+
Boston Acoustics G21244	28 -5	0.579 +0.02	65 -1	8.2 +1.7	92.4 +0.7	close	2 Ω vs 4 Ω: amp load changes	+
Phoenix Gold RYVAL V12D	30 -3	0.552 -0.01	81.9 +15.9	6.4 -0.1	91.4 -0.3	close	150 W vs 250 W: lower power handling · Xmax 6.4 mm < 6.5 mm: lower excursion-limited SPL	+
Rockford Fosgate R2D4-12	34.9 +1.9	0.605 +0.04	68.8 +2.8	6.5 =	88.9 -2.8	close	8 Ω vs 4 Ω: amp load changes	+
Monacor PREDATOR 12	33 =	0.463 -0.1	64 -2	5.9 -0.6	91.9 +0.2	close	Xmax 5.9 mm < 6.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the XT12-04 →

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.