Giardinelli C12 vs Marcinkiewicz 13
The Giardinelli C12 has a wider cup diameter, the Marcinkiewicz 13 features a deeper cup, the Giardinelli C12 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Giardinelli C12
• French Horn
Cup diameter17.50 mm
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 13
• French Horn
Cup diameter17.42 mm
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Giardinelli C12 has a cup diameter of 17.50 mm compared to 17.42 mm on the Marcinkiewicz 13 — a difference of +0.08 mm. 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.