Denis Wick 1AL vs Marcinkiewicz 15
The Denis Wick 1AL has a wider cup diameter, the Denis Wick 1AL has a larger throat opening.
Cup Diameter
The Denis Wick 1AL has a cup diameter of 27.11 mm / 1.0673 in compared to 25.10 mm / 0.9882 in on the Marcinkiewicz 15 — a difference of 2.01 mm / 0.0791 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Denis Wick 1AL has a wider throat (7.45 mm / 0.2933 in vs 5.94 mm / 0.2339 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.