Denis Wick 4FL vs Denis Wick SFL
The Denis Wick 4FL has a wider cup diameter, the Denis Wick 4FL features a deeper cup, the Denis Wick 4FL has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 4FL
• Flugelhorn
Cup diameter16.50 mm / 0.6496 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick SFL
• Flugelhorn
Cup diameter16.00 mm / 0.6299 in
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 4FL has a cup diameter of 16.50 mm / 0.6496 in compared to 16.00 mm / 0.6299 in on the Denis Wick SFL — a difference of 0.50 mm / 0.0197 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.