Schilke 45B vs Schilke 59

The Schilke 59 has a wider cup diameter, the Schilke 59 features a deeper cup, the Schilke 59 has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Schilke 45B
    • Trombone
    Cup diameter24.30 mm / 0.9567 in
    Cup depthMedium
    Rim width
    Throat diameter5.95 mm / 0.2343 in
    Backbore15/64 .2344"
    Finish
    Material
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 59
      • Trombone
      Cup diameter28.52 mm / 1.1228 in
      Cup depthDeep
      Rim width
      Throat diameter7.54 mm / 0.2969 in
      Backbore19/64.2969"
      Finish
      Material
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Diameter

      The Schilke 59 has a cup diameter of 28.52 mm / 1.1228 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 4.22 mm / 0.1661 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      Cup Depth

      The Schilke 59 has a deep cup while the Schilke 45B has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      Throat Diameter

      The Schilke 59 has a wider throat (7.54 mm / 0.2969 in vs 5.95 mm / 0.2343 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.

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