Kelly 11 vs Yamaha HR-29B
The Kelly 11 has a wider cup diameter, the Kelly 11 features a deeper cup, the Yamaha HR-29B has a larger throat opening.
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
Kelly 11
• French Horn
GeneralMaterialLexan polycarbonate
Best suited for
Orchestral playing — large cup for full, dark tone
Large-rim French horn
vs
Mouthpiece B
Yamaha HR-29B
• French Horn
Material—
Best suited for
High-volume projection — open throat for power
Material
The Kelly 11 is described as Lexan polycarbonate, and the Yamaha HR-29B 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.