Denis Wick 4F vs Giardinelli 6FL
The Giardinelli 6FL has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 4F
• Flugelhorn
Cup diameter16.50 mm / 0.6496 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Giardinelli 6FL
• Flugelhorn
Cup diameter16.70 mm / 0.6575 in
Cup Diameter
The Giardinelli 6FL has a cup diameter of 16.70 mm / 0.6575 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4F — a difference of 0.20 mm / 0.0079 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.