Home › Trombone › Bach 9 vs Curry 7C

Bach 9 vs Curry 7C

The Curry 7C has a wider cup diameter, the Bach 9 features a deeper cup, the Curry 7C 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 9
    • Trombone
    Cup diameter24.72 mm / 0.9732 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Curry 7C
      • Trombone
      Cup diameter24.74 mm / 0.9740 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Curry 7C has a cup diameter of 24.74 mm / 0.9740 in compared to 24.72 mm / 0.9732 in on the Bach 9 — a difference of 0.02 mm / 0.0008 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 9 details Curry 7C details Bach 9 equivalents Curry 7C equivalents

      Compare Bach 9 with others

      Compare Curry 7C with others

      Popular Trombone comparisons

      Bach vs Curry

      Browse by specification