Bach 1½C vs Conn Connstellation 7BW
The Bach 1½C has a wider cup diameter, the Conn Connstellation 7BW 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 7BW
• Cornet
GeneralBackbore—
Best suited for
Trumpet players seeking precise matched dimensions
Size 7 (16.42mm); smaller cup; more compact tone; Wide rim; larger rounded inner radius; less 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.