Bach 10½D vs Bach 1B
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 10½D
• Cornet
Cup depthShallow
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Bach 1B
• Cornet
Cup depthDeep
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Depth
The Bach 1B has a deep cup while the Bach 10½D has a shallow 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.