Beyma SM115 vp1

15" · 8 Ω · 400 W · 98.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	35.9 Hz
Qts	0.355
Qes	0.39
Qms	4
Vas	314.2 L
Sd	881.4 cm²
Xmax	7.3 mm
Re	6.71 Ω
Bl	16.3 T·m
Mms	68.2 g
Pe	400 W
Sensitivity	98.5 dB

Alignment hint

EBP	92 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 105.9 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
Beyma SM115 vp4	35.5 -0.4	0.339 -0.02	310.6 -3.6	7.3 =	99 +0.5	close		+
Beyma SM115 vp2	35.4 -0.5	0.365 +0.01	295.8 -18.4	7.3 =	98.2 -0.3	close		+
Beyma SM115 vp3	35 -0.9	0.335 -0.02	282.9 -31.3	7.3 =	97.9 -0.6	close		+
AE Speakers TD15M	34.7 -1.2	0.327 -0.03	312 -2.2	6 -1.3	98.5 =	close	250 W vs 400 W: lower power handling · Xmax 6 mm < 7.3 mm: lower excursion-limited SPL	+
AE Speakers TD15M 8 Ohms	34.7 -1.2	0.327 -0.03	312 -2.2	6 -1.3	98.5 =	close	250 W vs 400 W: lower power handling · Xmax 6 mm < 7.3 mm: lower excursion-limited SPL	+
Beyma SM115 v2	35 -0.9	0.315 -0.04	276 -38.2	7.3 =	98.4 -0.1	close		+
Beyma SM115/N 8 ohms	35 -0.9	0.382 +0.03	267 -47.2	7.3 =	97.5 -1	close		+
Beyma SM115/N v2015	35 -0.9	0.382 +0.03	267 -47.2	7.3 =	97.5 -1	close		+
Focal 38WX4	28.9 -7	0.364 +0.01	310.4 -3.8	7.7 +0.4	99.2 +0.7	close	4 Ω vs 8 Ω: amp load changes · 225 W vs 400 W: lower power handling	+
PD PDN 15BR40	35.7 -0.2	0.338 -0.02	224.8 -89.4	9.8 +2.5	98.5 =	close		+

Compare the closest 3 against the SM115 vp1 →

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.