Schilke 13F4 vs Yamaha FH-14F4
the Yamaha FH-14F4 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Schilke 13F4
• Flugelhorn
Cup diameter16.76 mm / 0.6598 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha FH-14F4
• Flugelhorn
Cup diameter16.76 mm / 0.6598 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.76 mm / 0.6598 in.
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.