Denis Wick 4BFL vs Denis Wick 4FL
the Denis Wick 4FL features a deeper cup.
Mouthpiece A
Denis Wick 4BFL
• Flugelhorn
Cup diameter16.50 mm / 0.6496 in
Cup depthDeep
Rim width5.17 mm / 0.2035 in
Throat diameter4.58 mm / 0.1803 in
Backboreopen
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 4FL
• Flugelhorn
Cup diameter16.50 mm / 0.6496 in
Cup depthVery deep
Rim width5.17 mm / 0.2035 in
Throat diameter4.58 mm / 0.1803 in
Backboreopen
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.50 mm / 0.6496 in.
Cup Depth
The Denis Wick 4FL has a very deep cup while the Denis Wick 4BFL has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 4.58 mm / 0.1803 in, so resistance feel will be comparable.
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.