Marcinkiewicz E5B. Shew #2 vs Marcinkiewicz 5
The Marcinkiewicz 5 has a wider cup diameter.
Mouthpiece A
Marcinkiewicz E5B. Shew #2
• Trumpet
Cup diameter16.81 mm / 0.6618 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Marcinkiewicz 5
• Trumpet
Cup diameter16.84 mm / 0.6630 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
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 E5B. Shew #2 — a difference of 0.03 mm / 0.0012 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.66 mm / 0.1441 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.