Marcinkiewicz CH 107 vs Yamaha SL-48DL
The Marcinkiewicz CH 107 has a wider cup diameter, the Yamaha SL-48DL features a deeper cup, the Marcinkiewicz CH 107 has a larger throat opening.
Cup Diameter
The Marcinkiewicz CH 107 has a cup diameter of 30.15 mm / 1.1870 in compared to 25.25 mm / 0.9941 in on the Yamaha SL-48DL — a difference of 4.90 mm / 0.1929 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Yamaha SL-48DL has a deep cup while the Marcinkiewicz CH 107 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 CH 107 has a wider throat (8.03 mm / 0.3161 in vs 6.62 mm / 0.2606 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.