Bruno Tilz 211-D 7 vs Kelly MC
The Bruno Tilz 211-D 7 has a wider cup diameter, the Kelly MC features a deeper cup, the Bruno Tilz 211-D 7 has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bruno Tilz 211-D 7
• French Horn
CatalogThroat diameter4.30 mm / 0.1693 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Kelly MC
• French Horn
GeneralThroat diameter3.80 mm / 0.1496 in
Best suited for
High-volume projection — open throat for power
All-purpose French horn
Throat Diameter
The Bruno Tilz 211-D 7 has a wider throat (4.30 mm / 0.1693 in vs 3.80 mm / 0.1496 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
The Bruno Tilz 211-D 7 is designed for catalog playing, while the Kelly MC targets general use. Your best choice depends on your musical context.