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Schilke 40 vs Schilke 45B

The Schilke 45B has a wider cup diameter.

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 40
    • Trombone
    Cup diameter22.53 mm / 0.8870 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 45B
      • Trombone
      Cup diameter24.30 mm / 0.9567 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Schilke 45B has a cup diameter of 24.30 mm / 0.9567 in compared to 22.53 mm / 0.8870 in on the Schilke 40 — a difference of 1.77 mm / 0.0697 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 40 details Schilke 45B details Schilke 40 equivalents Schilke 45B equivalents

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