Bach 5MV vs Bach 6BM
The Bach 5MV has a wider cup diameter, the Bach 5MV has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 5MV
• Cornet
Throat diameter3.81 mm / 0.1500 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bach 6BM
• Cornet
Throat diameter3.73 mm / 0.1469 in
Throat Diameter
The Bach 5MV has a wider throat (3.81 mm / 0.1500 in vs 3.73 mm / 0.1469 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.