Marcinkiewicz E14B. Shew #1 vs Marcinkiewicz 5
The Marcinkiewicz 5 has a wider cup diameter, the Marcinkiewicz E14B. Shew #1 features a deeper cup, the Marcinkiewicz 5 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Marcinkiewicz E14B. Shew #1
• Trumpet
Cup diameter16.81 mm / 0.6618 in
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Marcinkiewicz 5
• Trumpet
Cup diameter16.84 mm / 0.6630 in
Cup Diameter
The Marcinkiewicz 5 has a cup diameter of 16.84 mm / 0.6630 in compared to 16.81 mm / 0.6618 in on the Marcinkiewicz E14B. Shew #1 — a difference of 0.03 mm / 0.0012 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.