Bach 3C vs Conn Connstellation 9BW
The Bach 3C has a wider cup diameter, the Conn Connstellation 9BW features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 3C
• Trumpet
Cup depthMedium
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Conn Connstellation 9BW
• Trumpet
LeadCup depthVery deep
Best suited for
Trumpet players seeking precise matched dimensions
Size 9 (15.88mm); smaller cup; more compact tone; Wide rim; larger rounded inner radius; less bite.
Cup Depth
The Conn Connstellation 9BW has a very deep cup while the Bach 3C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.