Bach 1½C vs Conn Connstellation 7BW
The Bach 1½C has a wider cup diameter, the Conn Connstellation 7BW 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 1½C
• Cornet
Rim width—
vs
Mouthpiece B
Conn Connstellation 7BW
• Cornet
GeneralRim width—
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.