Bach 5B vs Bach 5MV
the Bach 5MV has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 5B
• Cornet
Cup diameter16.25 mm / 0.6398 in
vs
Mouthpiece B
Bach 5MV
• Cornet
Cup diameter16.25 mm / 0.6398 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.25 mm / 0.6398 in.
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.