Curry 3 C. vs Marcinkiewicz 303
The Marcinkiewicz 303 has a wider cup diameter, the Curry 3 C. features a deeper cup, the Curry 3 C. has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Curry 3 C.
• Trumpet
Cup diameter16.89 mm / 0.6650 in
vs
Mouthpiece B
Marcinkiewicz 303
• Trumpet
Cup diameter17.20 mm / 0.6772 in
Cup Diameter
The Marcinkiewicz 303 has a cup diameter of 17.20 mm / 0.6772 in compared to 16.89 mm / 0.6650 in on the Curry 3 C. — a difference of 0.31 mm / 0.0122 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.