Marcinkiewicz 5FLB vs Marcinkiewicz 5FLD
the Marcinkiewicz 5FLD has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Marcinkiewicz 5FLB
• Flugelhorn
Backbore—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 5FLD
• Flugelhorn
Backbore—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
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.