Bach 2½C vs Conn Connstellation 5CW
The Conn Connstellation 5CW has a wider cup diameter, the Conn Connstellation 5CW features a deeper cup.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 2½C
• Cornet
Throat diameter3.66 mm / 0.1441 in
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Conn Connstellation 5CW
• Cornet
OrchestralThroat diameter—
Best suited for
Trumpet players seeking precise matched dimensions
Size 5 (16.76mm); larger cup; fuller lower register; Wide rim; larger rounded inner radius; less bit
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.