Bach 10½C Flugel vs Bach 5B Flugel

The Bach 5B Flugel has a wider cup diameter, the Bach 5B Flugel features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.
Mouthpiece A
    Bach 10½C Flugel
    • Flugelhorn
    Material
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bach 5B Flugel
      • Flugelhorn
      Material
      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.

      Open in interactive tool + Add third mouthpiece Bach 10½C Flugel details Bach 5B Flugel details Bach 10½C Flugel equivalents Bach 5B Flugel equivalents