Bruno Tilz 310-M 18 vs Schilke S-H
The Schilke S-H has a wider cup diameter, the Bruno Tilz 310-M 18 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bruno Tilz 310-M 18
• Tuba
CatalogCup diameter31.50 mm / 1.2402 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke S-H
• Tuba
Cup diameter31.84 mm / 1.2535 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Schilke S-H has a cup diameter of 31.84 mm / 1.2535 in compared to 31.50 mm / 1.2402 in on the Bruno Tilz 310-M 18 — a difference of 0.34 mm / 0.0134 in. 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.