MTX Audio T612S-22

15" · 4 Ω · 600 W · 91.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	33.6 Hz
Qts	0.602
Qes	0.65
Qms	8.18
Vas	58.9 L
Sd	702 cm²
Xmax	7.4 mm
Re	3.3 Ω
Bl	16.8 T·m
Mms	263.2 g
Pe	600 W
Sensitivity	91.2 dB

Alignment hint

EBP	52 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 155.1 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
Ground Zero GZRW 15XSPL D2	34.1 +0.5	0.59 -0.01	63.3 +4.4	11.3 +3.9	91.1 -0.1	close		+
MTX Audio T815-22	32.3 -1.3	0.635 +0.03	57 -1.9	6.1 -1.3	90 -1.2	close	Xmax 6.1 mm < 7.4 mm: lower excursion-limited SPL	+
Lanzar OPTI1535D vp	30 -3.6	0.587 -0.02	55.4 -3.5	10.4 +3	88.3 -2.9	close	8 Ω vs 4 Ω: amp load changes	+
Monacor RAPTOR 15	39 +5.4	0.696 +0.09	56 -2.9	7.4 =	92 +0.8	close		+
Monacor RAPTOR 15 MK2	39 +5.4	0.696 +0.09	56 -2.9	7.4 =	92 +0.8	close		+
Rockford Fosgate T2D415	31 -2.6	0.613 +0.01	51.6 -7.3	9.3 +1.9	86.2 -5	usable	8 Ω vs 4 Ω: amp load changes	+
MTX Audio TH9515.44	31.9 -1.7	0.653 +0.05	70 +11.1	6.3 -1.1	93.3 +2.1	usable	2 Ω vs 4 Ω: amp load changes · Xmax 6.3 mm < 7.4 mm: lower excursion-limited SPL	+
Rockford Fosgate T2D215	31 -2.6	0.523 -0.08	48.4 -10.5	8.7 +1.3	89.7 -1.5	usable		+
MTX Audio TX815	35 +1.4	0.508 -0.09	44.7 -14.2	9.6 +2.2	93.3 +2.1	usable		+
B&C 15BG76	44 +10.4	0.56 -0.04	68.4 +9.5	9.6 +2.2	93.4 +2.2	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the T612S-22 →

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.