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Bach 11 vs Bach 11C

the Bach 11 features a deeper cup.

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
    Bach 11
    • Trombone
    Throat diameter5.85 mm / 0.2303 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bach 11C
      • Trombone
      Throat diameter5.85 mm / 0.2303 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      Throat diameters are essentially identical at 5.85 mm / 0.2303 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.

      Open in interactive tool + Add third mouthpiece Bach 11 details Bach 11C details Bach 11 equivalents Bach 11C equivalents

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