Bach 7C Flugel vs Schilke 18F
The Schilke 18F has a wider cup diameter, the Bach 7C Flugel has a larger throat opening.
Mouthpiece A
Bach 7C Flugel
• Flugelhorn
Cup diameter16.20 mm
Cup depthMedium
Rim width—
Throat diameter3.99 mm
Backbore—
Finish—
Material—
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke 18F
• Flugelhorn
Cup diameter17.52 mm
Cup depthMedium
Rim width—
Throat diameter3.86 mm
Backbore24 .1520"
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Schilke 18F has a cup diameter of 17.52 mm compared to 16.20 mm on the Bach 7C Flugel — a difference of +1.32 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 Bach 7C Flugel has a wider throat (3.99 mm vs 3.86 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.