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Schilke 45B vs Schilke 50

The Schilke 50 has a wider cup diameter, the Schilke 50 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
    Schilke 45B
    • Trombone
    Cup diameter24.30 mm / 0.9567 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 50
      • Trombone
      Cup diameter25.40 mm / 1.0000 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Schilke 50 has a cup diameter of 25.40 mm / 1.0000 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 1.10 mm / 0.0433 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 Schilke 45B details Schilke 50 details Schilke 45B equivalents Schilke 50 equivalents

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