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Schilke 45B vs Schilke 51C4

The Schilke 51C4 has a wider cup diameter, the Schilke 45B features a deeper cup, the Schilke 51C4 has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
    Schilke 45B
    • Trombone
    Cup depthMedium
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 51C4
      • Trombone
      Cup depthShallow
      Best suited for
      📣High-volume projection — open throat for power

      Cup Depth

      The Schilke 45B has a medium cup while the Schilke 51C4 has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      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 Schilke 45B details Schilke 51C4 details Schilke 45B equivalents Schilke 51C4 equivalents

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