Bach 1B vs Kelly 7C
The Bach 1B has a wider cup diameter, the Bach 1B features a deeper cup.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Bach 1B
• Cornet
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Kelly 7C
• Cornet
GeneralMaterialLexan polycarbonate
Best suited for
All-round versatile — balanced cup for general playing
Beginner / intermediate
Material
The Bach 1B is described as unspecified, and the Kelly 7C as Lexan polycarbonate. Material affects mass, warmth, and how quickly the piece responds.
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.