Marcinkiewicz CH 7S vs Marcinkiewicz 3
The Marcinkiewicz 3 has a wider cup diameter, the Marcinkiewicz CH 7S features a deeper cup, the Marcinkiewicz 3 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Marcinkiewicz CH 7S
• French Horn
Cup diameter17.75 mm / 0.6988 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 3
• French Horn
Cup diameter17.91 mm / 0.7051 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Marcinkiewicz 3 has a cup diameter of 17.91 mm / 0.7051 in compared to 17.75 mm / 0.6988 in on the Marcinkiewicz CH 7S — a difference of 0.16 mm / 0.0063 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.