Which has a bigger cup — Bob Reeves 43.5/FE or Schilke 20F?

The Schilke 20F has a cup diameter of 17.78 mm / 0.7000 in compared to 17.26 mm / 0.6795 in on the Bob Reeves 43.5/FE — a difference of 0.52 mm / 0.0205 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bob Reeves 43.5/FE and Schilke 20F?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Bob Reeves 43.5/FE vs Schilke 20F

Name: Schilke 20F
Brand: Schilke

The Schilke 20F has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Bob Reeves 43.5/FE

• Flugelhorn

Throat diameter—

Mouthpiece B

Schilke 20F

• Flugelhorn

Throat diameter3.86 mm / 0.1520 in

Best suited for

📣High-volume projection — open throat for power

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.