Marcinkiewicz E12.4R. Ingram vs Marcinkiewicz E14B. Shew #1
The Marcinkiewicz E14B. Shew #1 has a wider cup diameter.
Mouthpiece A
Marcinkiewicz E12.4R. Ingram
• Trumpet
Cup diameter16.54 mm / 0.6512 in
Cup depthDeep
Rim width—
Throat diameter3.56 mm / 0.1402 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Marcinkiewicz E14B. Shew #1
• Trumpet
Cup diameter16.81 mm / 0.6618 in
Cup depthDeep
Rim width—
Throat diameter3.56 mm / 0.1402 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
The Marcinkiewicz E14B. Shew #1 has a cup diameter of 16.81 mm / 0.6618 in compared to 16.54 mm / 0.6512 in on the Marcinkiewicz E12.4R. Ingram — a difference of 0.27 mm / 0.0106 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.56 mm / 0.1402 in, so resistance feel will be comparable.
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.