Marcinkiewicz 5*W (Endorsee) vs Marcinkiewicz 3 / 5C
The Marcinkiewicz 3 / 5C has a wider cup diameter, the Marcinkiewicz 3 / 5C features a deeper cup, the Marcinkiewicz 5*W (Endorsee) has a larger throat opening.
Cup Diameter
The Marcinkiewicz 3 / 5C has a cup diameter of 17.20 mm / 0.6772 in compared to 16.76 mm / 0.6598 in on the Marcinkiewicz 5*W (Endorsee) — a difference of 0.44 mm / 0.0173 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Marcinkiewicz 3 / 5C has a medium cup while the Marcinkiewicz 5*W (Endorsee) 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 5*W (Endorsee) has a wider throat (3.91 mm / 0.1539 in vs 3.73 mm / 0.1469 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.