B&C 6MBX44

6.5" · 8 Ω · 200 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	113 Hz
Qts	0.31
Qes	0.34
Qms	3.9
Vas	4.1 L
Sd	132 cm²
Xmax	3.5 mm
Re	5.4 Ω
Bl	11.7 T·m
Mms	12 g
Pe	200 W
Sensitivity	98 dB

Alignment hint

EBP	332 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 1 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
B&C 6MBX44	115 +2	0.35 +0.04	4 -0.1	3.5 =	98 =	close	16 Ω vs 8 Ω: amp load changes	+
B&C 6CLA51	96 -17	0.32 +0.01	4.3 +0.2	4.8 +1.3	94.5 -3.5	usable		+
18 Sound 6NMB420	110 -3	0.33 +0.02	6.1 +2	3 -0.5	100 +2	usable	Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
18 Sound 6M44	102 -11	0.29 -0.02	3.8 -0.3	2.25 -1.25	95 -3	usable	Xmax 2.25 mm < 3.5 mm: lower excursion-limited SPL	+
Oberton 6NM150	124 +11	0.377 +0.07	4 -0.1	2.25 -1.25	97 -1	usable	150 W vs 200 W: lower power handling · Xmax 2.25 mm < 3.5 mm: lower excursion-limited SPL	+
Beyma 6G40Nd/N	100 -13	0.38 +0.07	3.7 -0.4	3 -0.5	94 -4	usable	Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
18 Sound 6NMB420	112 -1	0.4 +0.09	5.9 +1.8	3 -0.5	100 +2	usable	16 Ω vs 8 Ω: amp load changes · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
18 Sound 6NTLW2000	86 -27	0.35 +0.04	4.6 +0.5	4.9 +1.4	93 -5	usable		+
18 Sound 6NMB900	100 -13	0.34 +0.03	6.65 +2.55	3 -0.5	96 -2	usable	16 Ω vs 8 Ω: amp load changes · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
B&C 6PEV13	126 +13	0.36 +0.05	6 +1.9	2.5 -1	99 +1	usable	120 W vs 200 W: lower power handling · Xmax 2.5 mm < 3.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 6MBX44 →

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.