Beyma SM115 v2

15" · 8 Ω · 400 W · 98.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	35 Hz
Qts	0.315
Qes	0.33
Qms	7.02
Vas	276 L
Sd	880 cm²
Xmax	7.3 mm
Re	6.5 Ω
Bl	18.8 T·m
Mms	81.3 g
Pe	400 W
Sensitivity	98.4 dB

Alignment hint

EBP	106 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 68.3 L

EBP > 100: favours a ported (bass-reflex) 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 vp3	35 =	0.335 +0.02	282.9 +6.9	7.3 =	97.9 -0.5	close		+
Max Speaker PR1566	36 +1	0.296 -0.02	262 -14	8.6 +1.3	99.1 +0.7	close		+
Beyma 15LW30 v2015	34 -1	0.325 +0.01	251 -25	7 -0.3	97.6 -0.8	close	Xmax 7 mm < 7.3 mm: lower excursion-limited SPL	+
Beyma SM115 vp4	35.5 +0.5	0.339 +0.02	310.6 +34.6	7.3 =	99 +0.6	close		+
Monacor SP-15/500FH	35 =	0.31 -0.01	218 -58	7.8 +0.5	98.6 +0.2	close		+
Beyma SM115 vp2	35.4 +0.4	0.365 +0.05	295.8 +19.8	7.3 =	98.2 -0.2	close		+
Supravox 400 GMF PRO MK2	35 =	0.32 +0.01	247 -29	5.8 -1.5	97.9 -0.5	close	200 W vs 400 W: lower power handling · Xmax 5.8 mm < 7.3 mm: lower excursion-limited SPL	+
Faital PRO 15PR400 v2021	35 =	0.322 +0.01	248.9 -27.1	5.8 -1.5	98.9 +0.5	close	Xmax 5.8 mm < 7.3 mm: lower excursion-limited SPL	+
Faital PRO 15PR400	35 =	0.32 +0.01	248.9 -27.1	5.75 -1.55	99 +0.6	close	Xmax 5.75 mm < 7.3 mm: lower excursion-limited SPL	+
Faital PRO 15PR400	35 =	0.31 -0.01	248.9 -27.1	5.75 -1.55	99 +0.6	close	4 Ω vs 8 Ω: amp load changes · Xmax 5.75 mm < 7.3 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SM115 v2 →

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.