Kelly 5C vs Monette Cornet B2 FL

The Monette Cornet B2 FL has a wider cup diameter, the Kelly 5C features a deeper cup, the Kelly 5C has a larger throat opening.

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
    Kelly 5C
    • Cornet
    General
    MaterialLexan polycarbonate
    Best suited for
    📣High-volume projection — open throat for power
    📋Mid-range all-purpose
    vs
    Mouthpiece B
      Monette Cornet B2 FL
      • Cornet
      Material
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone

      Material

      The Kelly 5C is described as Lexan polycarbonate, and the Monette Cornet B2 FL as unspecified. Material affects mass, warmth, and how quickly the piece responds.

      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 Kelly 5C details Monette Cornet B2 FL details Kelly 5C equivalents Monette Cornet B2 FL equivalents