Bach 2½C vs Conn Connstellation 7CN
The Conn Connstellation 7CN has a wider cup diameter, the Conn Connstellation 7CN 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 2½C
• Cornet
Rim width—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Conn Connstellation 7CN
• Cornet
GeneralRim width—
Best suited for
Trumpet players seeking precise matched dimensions
Size 7 (16.42mm); larger cup; fuller lower register; Narrow rim; smaller inner radius; sharper bite.
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.