Beyma 6"MCF200Nd

6.5" · 8 Ω · 200 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	406 Hz
Qts	0.72
Qes	0.77
Qms	10.3
Vas	0.27 L
Sd	140 cm²
Xmax	2.5 mm
Re	6.2 Ω
Bl	18.1 T·m
Mms	15 g
Pe	200 W
Sensitivity	97 dB

Alignment hint

EBP	527 · ported
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
B&C 6NSM51	280 -126	0.6 -0.12	0.7 +0.43	2.8 +0.3	100 +3	risky		+
B&C 6MD38	150 -256	0.5 -0.22	2.3 +2.03	3.5 +1	95 -2	risky	16 Ω vs 8 Ω: amp load changes · 120 W vs 200 W: lower power handling	+
B&C 6MDN44	138 -268	0.47 -0.25	2.8 +2.53	3 +0.5	97 =	risky	16 Ω vs 8 Ω: amp load changes	+
B&C 6MDN44	140 -266	0.4 -0.32	2.7 +2.43	2.5 =	96.5 -0.5	risky		+
Beyma 6"MI100	128 -278	0.51 -0.21	3.1 +2.83	3 +0.5	94 -3	risky		+
B&C 6MD38	130 -276	0.44 -0.28	3 +2.73	2 -0.5	96 -1	risky	120 W vs 200 W: lower power handling · Xmax 2 mm < 2.5 mm: lower excursion-limited SPL	+
Oberton 6NM150	124 -282	0.377 -0.34	4 +3.73	2.25 -0.25	97 =	risky	150 W vs 200 W: lower power handling · Xmax 2.25 mm < 2.5 mm: lower excursion-limited SPL	+
18 Sound 6ND410	149 -257	0.48 -0.24	6.2 +5.93	2 -0.5	102 +5	risky	16 Ω vs 8 Ω: amp load changes · Xmax 2 mm < 2.5 mm: lower excursion-limited SPL	+
B&C 6MBX44	115 -291	0.35 -0.37	4 +3.73	3.5 +1	98 +1	risky	16 Ω vs 8 Ω: amp load changes	+
Oberton 6M150	115.1 -290.9	0.422 -0.3	5.35 +5.08	2.25 -0.25	96 -1	risky	150 W vs 200 W: lower power handling · Xmax 2.25 mm < 2.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 6"MCF200Nd →

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.