Marcinkiewicz 307 vs Marcinkiewicz 1 / 5B
The Marcinkiewicz 1 / 5B has a wider cup diameter.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Marcinkiewicz 307
• Cornet
Throat diameter3.73 mm / 0.1469 in
vs
Mouthpiece B
Marcinkiewicz 1 / 5B
• Cornet
Throat diameter3.73 mm / 0.1469 in
Throat Diameter
Throat diameters are essentially identical at 3.73 mm / 0.1469 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.