Bach 1½C vs Conn Connstellation 7CN
The Bach 1½C has a wider cup diameter, the Conn Connstellation 7CN features a deeper cup.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bach 1½C
• Cornet
Backbore—
vs
Mouthpiece B
Conn Connstellation 7CN
• Cornet
GeneralBackbore—
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.