Bach 1¼G vs Curry 11S

The Bach 1¼G has a wider cup diameter, the Bach 1¼G features a deeper cup, the Bach 1¼G has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Bach 1¼G
    • Trombone
    Cup diameter27.50 mm / 1.0827 in
    Cup depthVery deep
    Rim width
    Throat diameter7.01 mm / 0.2760 in
    Backbore
    Finish
    Material
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Curry 11S
      • Trombone
      Cup diameter24.49 mm / 0.9640 in
      Cup depthShallow
      Rim width
      Throat diameter6.02 mm / 0.2370 in
      Backbore
      Finish
      Material
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bach 1¼G has a cup diameter of 27.50 mm / 1.0827 in compared to 24.49 mm / 0.9640 in on the Curry 11S — a difference of 3.01 mm / 0.1187 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      Cup Depth

      The Bach 1¼G has a very deep cup while the Curry 11S has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      Throat Diameter

      The Bach 1¼G has a wider throat (7.01 mm / 0.2760 in vs 6.02 mm / 0.2370 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.

      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 1¼G details Curry 11S details Bach 1¼G equivalents Curry 11S equivalents