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.
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.
Cup Depth
The Marcinkiewicz E14B. Shew #1 has a deep cup while the Marcinkiewicz 5 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Marcinkiewicz 5 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.