Bach 8½A vs Kelly 6V
The Bach 8½A has a wider cup diameter, the Kelly 6V features a deeper cup, the Kelly 6V has a larger throat opening.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 8½A
• Cornet
Rim width—
vs
Mouthpiece B
Kelly 6V
• Cornet
Dark/DeepRim width—
Best suited for
High-volume projection — open throat for power
Deep V-cup to fill out cornet sound
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.