Denis Wick 4F vs Marcinkiewicz 5FLB
The Marcinkiewicz 5FLB has a wider cup diameter, the Denis Wick 4F features a deeper cup, the Denis Wick 4F has a larger throat opening.
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
Marcinkiewicz 5FLB
• Flugelhorn
Cup diameter17.25 mm / 0.6791 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Marcinkiewicz 5FLB has a cup diameter of 17.25 mm / 0.6791 in compared to 16.50 mm / 0.6496 in on the Denis Wick 4F — a difference of 0.75 mm / 0.0295 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.