Beyma 8CM V2

8" · 8 Ω · 250 W · 94 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	75 Hz
Qts	0.52
Qes	0.55
Qms	7.7
Vas	14.6 L
Sd	220 cm²
Xmax	5.7 mm
Re	5.1 Ω
Mms	21 g
Pe	250 W
Sensitivity	94 dB

Alignment hint

EBP	136 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 17.2 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
Faital PRO 8PR150	75 =	0.48 -0.04	16.2 +1.6	5 -0.7	94 =	close	Xmax 5 mm < 5.7 mm: lower excursion-limited SPL	+
B&C 8NDL51	70 -5	0.47 -0.05	13.4 -1.2	7 +1.3	94 =	close	16 Ω vs 8 Ω: amp load changes	+
Faital PRO 8FE300	70 -5	0.44 -0.08	15.7 +1.1	5.52 -0.18	95 +1	close	Xmax 5.52 mm < 5.7 mm: lower excursion-limited SPL	+
18 Sound 8MB500	73 -2	0.5 -0.02	21.3 +6.7	6 +0.3	95 +1	usable	16 Ω vs 8 Ω: amp load changes	+
Faital PRO 8FE300	70 -5	0.66 +0.14	14.4 -0.2	5.52 -0.18	95 +1	usable	16 Ω vs 8 Ω: amp load changes · Xmax 5.52 mm < 5.7 mm: lower excursion-limited SPL	+
B&C 8NDL51	75 =	0.57 +0.05	10.1 -4.5	7 +1.3	94 =	usable	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 8FE300	70 -5	0.41 -0.11	14 -0.6	5.47 -0.23	93 -1	usable	4 Ω vs 8 Ω: amp load changes · Xmax 5.47 mm < 5.7 mm: lower excursion-limited SPL	+
Faital PRO 8FE200	80 +5	0.45 -0.07	15.8 +1.2	4.62 -1.08	95 +1	usable	4 Ω vs 8 Ω: amp load changes · 130 W vs 250 W: lower power handling · Xmax 4.62 mm < 5.7 mm: lower excursion-limited SPL	+
B&C 8CL51	83 +8	0.51 -0.01	9.5 -5.1	6 +0.3	94 =	usable	16 Ω vs 8 Ω: amp load changes	+
Faital PRO 8PR200	60 -15	0.46 -0.06	16.1 +1.5	8.65 +2.95	94 =	usable	16 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 8CM 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.