Bach 10½C Flugel vs Bach 3C Flugel

The Bach 3C Flugel has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
    Bach 10½C Flugel
    • Flugelhorn
    Backbore
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bach 3C Flugel
      • Flugelhorn
      Backbore
      Best suited for
      🎵All-round versatile — balanced cup for general playing
      📣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.

      Open in interactive tool + Add third mouthpiece Bach 10½C Flugel details Bach 3C Flugel details Bach 10½C Flugel equivalents Bach 3C Flugel equivalents