TC Sounds LMS R15

15" · 4 Ω · 1000 W · 90.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	23.6 Hz
Qts	0.446
Qes	0.49
Qms	5
Vas	123 L
Sd	853 cm²
Xmax	12.1 mm
Re	3.94 Ω
Bl	21.2 T·m
Mms	377.1 g
Pe	1000 W
Sensitivity	90.2 dB

Alignment hint

EBP	48 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 81.3 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
Stereo Integrity SQL-15 15	23.8 +0.2	0.418 -0.03	115 -8	12.1 =	90.9 +0.7	close		+
JL Audio 13W7AE-D1.5	23.5 -0.1	0.448 =	104.3 -18.7	12.1 =	91.7 +1.5	close	750 W vs 1000 W: lower power handling	+
Ground Zero GZHW 38X	22.6 -1	0.43 -0.02	147 +24	12.5 +0.4	90.3 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio MX15-22	21.7 -1.9	0.415 -0.03	146.1 +23.1	12.3 +0.2	90.1 -0.1	close		+
Dayton Audio TIT400C	24.2 +0.6	0.483 +0.04	154.3 +31.3	13.3 +1.2	91.5 +1.3	close		+
JBL W15GTI	25.2 +1.6	0.476 +0.03	132.2 +9.2	10.2 -1.9	92.5 +2.3	close	Xmax 10.2 mm < 12.1 mm: lower excursion-limited SPL	+
JBL W15GTI MK2	25.2 +1.6	0.476 +0.03	132.2 +9.2	10.2 -1.9	92.5 +2.3	close	Xmax 10.2 mm < 12.1 mm: lower excursion-limited SPL	+
18 Sound 15NTLS3500	28 +4.4	0.42 -0.03	141 +18	15.3 +3.2	89 -1.2	usable	8 Ω vs 4 Ω: amp load changes	+
Audiobahn AW1571T	28.2 +4.6	0.49 +0.04	133.088 +10.09	11 -1.1	89.2 -1	usable	500 W vs 1000 W: lower power handling · Xmax 11 mm < 12.1 mm: lower excursion-limited SPL	+
Alpine SWR-1542D	23 -0.6	0.452 +0.01	100 -23	10.3 -1.8	86.7 -3.5	usable	8 Ω vs 4 Ω: amp load changes · 750 W vs 1000 W: lower power handling · Xmax 10.3 mm < 12.1 mm: lower excursion-limited SPL	+

Compare the closest 3 against the LMS R15 →

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.