AE Speakers TD15M 4 Ohms

15" · 4 Ω · 250 W · 102.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	34.7 Hz
Qts	0.327
Qes	0.35
Qms	5.09
Vas	312 L
Sd	855 cm²
Xmax	6 mm
Re	2.9 Ω
Bl	11.2 T·m
Mms	69.1 g
Pe	250 W
Sensitivity	102.1 dB

Alignment hint

EBP	99 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 84.9 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
AE Speakers TD15M	34.7 =	0.327 =	312 =	6 =	98.5 -3.6	close	8 Ω vs 4 Ω: amp load changes	+
AE Speakers TD15M 8 Ohms	34.7 =	0.327 =	312 =	6 =	98.5 -3.6	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115 vp4	35.5 +0.8	0.339 +0.01	310.6 -1.4	7.3 +1.3	99 -3.1	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA 15 A	33 -1.7	0.318 -0.01	321.3 +9.3	5.5 -0.5	99.3 -2.8	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Faital PRO 15PR400 4 Ohms	35 +0.3	0.313 -0.01	248.9 -63.1	5.8 -0.2	100.9 -1.2	close	Xmax 5.8 mm < 6 mm: lower excursion-limited SPL	+
Beyma SM115 vp1	35.9 +1.2	0.355 +0.03	314.2 +2.2	7.3 +1.3	98.5 -3.6	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115 vp3	35 +0.3	0.335 +0.01	282.9 -29.1	7.3 +1.3	97.9 -4.2	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM115 v2	35 +0.3	0.315 -0.01	276 -36	7.3 +1.3	98.4 -3.7	close	8 Ω vs 4 Ω: amp load changes	+
Beyma SM-115	35 +0.3	0.282 -0.05	331 +19	6.7 +0.7	99.7 -2.4	close	8 Ω vs 4 Ω: amp load changes	+
Eminence KAPPA 15	36 +1.3	0.301 -0.03	278 -34	5.5 -0.5	100.1 -2	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the TD15M 4 Ohms →

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.