MTX Audio T615-44

15" · 8 Ω · 250 W · 88.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	26.2 Hz
Qts	0.498
Qes	0.55
Qms	5.3
Vas	113 L
Sd	876 cm²
Xmax	5.6 mm
Re	6.12 Ω
Bl	25.4 T·m
Mms	351.3 g
Pe	250 W
Sensitivity	88.8 dB

Alignment hint

EBP	48 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 111.2 L

EBP < 50: favours a sealed (closed) 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 P1520	25.4 -0.8	0.502 =	118.9 +5.9	8.1 +2.5	90.8 +2	close	4 Ω vs 8 Ω: amp load changes	+
JBL P1520e	25.4 -0.8	0.502 =	118.9 +5.9	8.1 +2.5	90.8 +2	close	4 Ω vs 8 Ω: amp load changes	+
Rockford Fosgate T0D415	26.2 =	0.521 +0.02	94.4 -18.6	9.7 +4.1	88 -0.8	close		+
Audiobahn AW1571T	28.2 +2	0.49 -0.01	133.088 +20.09	11 +5.4	89.2 +0.4	close	4 Ω vs 8 Ω: amp load changes	+
Stereo Integrity RM-15 15	29 +2.8	0.498 =	89.7 -23.3	9.7 +4.1	89.2 +0.4	close		+
MTX Audio T615-22	25.7 -0.5	0.431 -0.07	110 -3	7.1 +1.5	92.1 +3.3	close	4 Ω vs 8 Ω: amp load changes	+
Sony XS-L156P5	25 -1.2	0.622 +0.12	109.9 -3.1	5.5 -0.1	90.2 +1.4	close	4 Ω vs 8 Ω: amp load changes · Xmax 5.5 mm < 5.6 mm: lower excursion-limited SPL	+
Monacor SONIC 15 MK2	22 -4.2	0.577 +0.08	119 +6	6.3 +0.7	88.2 -0.6	usable	4 Ω vs 8 Ω: amp load changes	+
Audiopipe TS-AR15	24 -2.2	0.48 -0.02	99.11 -13.89	7.5 +1.9	84.9 -3.9	usable	4 Ω vs 8 Ω: amp load changes	+
Sony XS-L154P5B	25.6 -0.6	0.607 +0.11	132.4 +19.4	5.6 =	90.4 +1.6	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the T615-44 →

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.