Bruno Tilz 211-58 vs Yamaha HR-30C4
The Yamaha HR-30C4 has a wider cup diameter, the Yamaha HR-30C4 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 211-58
• French Horn
CatalogCup diameter17.00 mm
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha HR-30C4
• French Horn
Cup diameter17.28 mm
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Yamaha HR-30C4 has a cup diameter of 17.28 mm compared to 17.00 mm on the Bruno Tilz 211-58 — a difference of +0.28 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
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.