Kelly 7C vs Yamaha CR-11C4S
The Kelly 7C has a wider cup diameter, the Kelly 7C has a larger throat opening.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Kelly 7C
• Cornet
GeneralMaterialLexan polycarbonate
Best suited for
All-round versatile — balanced cup for general playing
Beginner / intermediate
vs
Mouthpiece B
Yamaha CR-11C4S
• Cornet
Material—
Best suited for
All-round versatile — balanced cup for general playing
Material
The Kelly 7C is described as Lexan polycarbonate, and the Yamaha CR-11C4S as unspecified. 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.