Marcinkiewicz CH E3.1 vs Monette Cornet E1-5M S12
The Marcinkiewicz CH E3.1 has a wider cup diameter, the Marcinkiewicz CH E3.1 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Marcinkiewicz CH E3.1
• Cornet
Cup diameter17.12 mm / 0.6740 in
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Monette Cornet E1-5M S12
• Cornet
Cup diameter17.00 mm / 0.6693 in
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The Marcinkiewicz CH E3.1 has a cup diameter of 17.12 mm / 0.6740 in compared to 17.00 mm / 0.6693 in on the Monette Cornet E1-5M S12 — a difference of 0.12 mm / 0.0047 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.