Bach 10 vs Bach 10½C
The Bach 10 has a wider cup diameter, the Bach 10 features a deeper cup.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 10
• Cornet
Rim width—
vs
Mouthpiece B
Bach 10½C
• Cornet
Rim width—
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.