Schilke 28 vs Schilke 31C2
The Schilke 31C2 has a wider cup diameter, the Schilke 28 has a larger throat opening.
Mouthpiece A
Schilke 28
• French Horn
Cup diameter16.15 mm
Cup depthMedium
Rim width—
Throat diameter3.71 mm
Backbore26
Finish—
Material—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Schilke 31C2
• French Horn
Cup diameter17.43 mm
Cup depthMedium
Rim width—
Throat diameter3.57 mm
Backbore14
Finish—
Material—
Cup Diameter
The Schilke 31C2 has a cup diameter of 17.43 mm compared to 16.15 mm on the Schilke 28 — a difference of +1.28 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Schilke 28 has a wider throat (3.71 mm vs 3.57 mm). 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.