Beyma SM115/K vp1

15" · 8 Ω · 500 W · 98.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	27.6 Hz
Qts	0.222
Qes	0.226
Qms	11.482
Vas	296.7 L
Sd	880 cm²
Xmax	8 mm
Re	5.18 Ω
Bl	22 T·m
Mms	121.8 g
Pe	500 W
Sensitivity	98.3 dB

Alignment hint

EBP	122 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 32.4 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/K vp2	29.8 +2.2	0.228 +0.01	291 -5.7	8 =	99 +0.7	close		+
STX W.38.800.4.MC	27 -0.6	0.219 =	272 -24.7	8 =	99.9 +1.6	close	4 Ω vs 8 Ω: amp load changes	+
Infinity BETA15	24.4 -3.2	0.23 +0.01	289.9 -6.8	7.9 -0.1	98.1 -0.2	close	4 Ω vs 8 Ω: amp load changes · 350 W vs 500 W: lower power handling · Xmax 7.9 mm < 8 mm: lower excursion-limited SPL	+
Beyma SM115/K	29 +1.4	0.249 +0.03	273 -23.7	8 =	97.2 -1.1	close		+
Beyma SM-115/K	27 -0.6	0.253 +0.03	345 +48.3	8 =	97.5 -0.8	close		+
PD PD 1550	31 +3.4	0.212 -0.01	242 -54.7	7.4 -0.6	98.1 -0.2	close	Xmax 7.4 mm < 8 mm: lower excursion-limited SPL	+
Precision Devices PD 1550	31 +3.4	0.212 -0.01	242 -54.7	7.4 -0.6	98.1 -0.2	close	Xmax 7.4 mm < 8 mm: lower excursion-limited SPL	+
Beyma 15BR400	30 +2.4	0.236 +0.01	274 -22.7	6 -2	98.3 =	close	Xmax 6 mm < 8 mm: lower excursion-limited SPL	+
STX W.38.800.8.MC	28 +0.4	0.252 +0.03	247 -49.7	8 =	96.5 -1.8	close		+
Beyma 15GT200 v1	30.4 +2.8	0.223 =	270 -26.7	5.5 -2.5	98.4 +0.1	close	250 W vs 500 W: lower power handling · Xmax 5.5 mm < 8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SM115/K 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.