Marcinkiewicz E14B. Shew #1 vs Marcinkiewicz E9M. Klein
The Marcinkiewicz E9M. Klein has a wider cup diameter, the Marcinkiewicz E9M. Klein has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Marcinkiewicz E14B. Shew #1
• Trumpet
Throat diameter3.56 mm / 0.1402 in
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Marcinkiewicz E9M. Klein
• Trumpet
Throat diameter3.66 mm / 0.1441 in
Best suited for
Orchestral playing — large cup for full, dark tone
Throat Diameter
The Marcinkiewicz E9M. Klein has a wider throat (3.66 mm / 0.1441 in vs 3.56 mm / 0.1402 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.