Marcinkiewicz 5FLB vs Marcinkiewicz 7FLB
the Marcinkiewicz 7FLB features a deeper cup.
Mouthpiece A
Marcinkiewicz 5FLB
• Flugelhorn
Cup diameter17.25 mm / 0.6791 in
Cup depthDeep
Rim width—
Throat diameter4.09 mm / 0.1610 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 7FLB
• Flugelhorn
Cup diameter17.25 mm / 0.6791 in
Cup depthVery deep
Rim width—
Throat diameter4.09 mm / 0.1610 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 17.25 mm / 0.6791 in.
Cup Depth
The Marcinkiewicz 7FLB has a very deep cup while the Marcinkiewicz 5FLB 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 4.09 mm / 0.1610 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.