Yamaha HR-29B vs Yamaha HR-29C4
the Yamaha HR-29C4 features a deeper cup, the Yamaha HR-29C4 has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Yamaha HR-29B
• French Horn
Throat diameter3.90 mm
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha HR-29C4
• French Horn
Throat diameter3.98 mm
Best suited for
High-volume projection — open throat for power
Throat Diameter
The Yamaha HR-29C4 has a wider throat (3.98 mm vs 3.90 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.