Marcinkiewicz E14B. Shew #1 vs Marcinkiewicz B1
The Marcinkiewicz B1 has a wider cup diameter, the Marcinkiewicz E14B. Shew #1 features a deeper cup, the Marcinkiewicz B1 has a larger throat opening.
Cup Diameter
The Marcinkiewicz B1 has a cup diameter of 17.45 mm / 0.6870 in compared to 16.81 mm / 0.6618 in on the Marcinkiewicz E14B. Shew #1 — a difference of 0.64 mm / 0.0252 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 B1 has a very shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Marcinkiewicz B1 has a wider throat (3.78 mm / 0.1488 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.