Bach Mega Tone Cornet 1B vs Marcinkiewicz CH E3.1JWM
The Marcinkiewicz CH E3.1JWM has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach Mega Tone Cornet 1B
• Cornet
Cup diameter17.00 mm / 0.6693 in
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Marcinkiewicz CH E3.1JWM
• Cornet
Cup diameter17.12 mm / 0.6740 in
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The Marcinkiewicz CH E3.1JWM has a cup diameter of 17.12 mm / 0.6740 in compared to 17.00 mm / 0.6693 in on the Bach Mega Tone Cornet 1B — 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.