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Bach 6 vs Curry 5C

The Curry 5C has a wider cup diameter, the Curry 5C has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Bach 6
    • Trombone
    Cup diameter25.50 mm / 1.0039 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Curry 5C
      • Trombone
      Cup diameter25.55 mm / 1.0060 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Curry 5C has a cup diameter of 25.55 mm / 1.0060 in compared to 25.50 mm / 1.0039 in on the Bach 6 — a difference of 0.05 mm / 0.0021 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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 6 details Curry 5C details Bach 6 equivalents Curry 5C equivalents

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