Schilke 14F4 vs Schilke 20F
The Schilke 20F has a wider cup diameter.
Mouthpiece A
Schilke 14F4
• Flugelhorn
Cup diameter17.09 mm / 0.6728 in
Cup depthMedium
Rim width—
Throat diameter3.86 mm / 0.1520 in
Backbore24 .1520"
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Schilke 20F
• Flugelhorn
Cup diameter17.78 mm / 0.7000 in
Cup depthMedium
Rim width—
Throat diameter3.86 mm / 0.1520 in
Backbore24 .1520"
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Schilke 20F has a cup diameter of 17.78 mm / 0.7000 in compared to 17.09 mm / 0.6728 in on the Schilke 14F4 — a difference of 0.69 mm / 0.0272 in. 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
Throat diameters are essentially identical at 3.86 mm / 0.1520 in, so resistance feel will be comparable.
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.