Bach 1B vs Kelly 7C
The Bach 1B has a wider cup diameter, the Bach 1B features a deeper cup.
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
Bach 1B
• Cornet
Cup depthDeep
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Kelly 7C
• Cornet
GeneralCup depthMedium
Best suited for
All-round versatile — balanced cup for general playing
Beginner / intermediate
Cup Depth
The Bach 1B has a deep cup while the Kelly 7C 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.