Schilke 40 vs Schilke 40B

The Schilke 40 has a wider cup diameter, the Schilke 40 features a deeper cup.

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 40B
      • Trombone
      Cup diameter22.51 mm / 0.8862 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Schilke 40 has a cup diameter of 22.53 mm / 0.8870 in compared to 22.51 mm / 0.8862 in on the Schilke 40B — a difference of 0.02 mm / 0.0008 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 40B details Schilke 40 equivalents Schilke 40B equivalents