Bach 10 vs Giardinelli C10
The Giardinelli C10 has a wider cup diameter, the Giardinelli C10 has a larger throat opening.
Mouthpiece A
Bach 10
• French Horn
Cup diameter16.80 mm
Cup depthVery deep
Rim width—
Throat diameter4.50 mm
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Giardinelli C10
• French Horn
Cup diameter17.50 mm
Cup depthVery deep
Rim width—
Throat diameter4.90 mm
Backbore.193"
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Giardinelli C10 has a cup diameter of 17.50 mm compared to 16.80 mm on the Bach 10 — a difference of +0.70 mm. 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 Giardinelli C10 has a wider throat (4.90 mm vs 4.50 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.