Home › Trombone › Schilke 42 vs Yamaha SL-48S-GP

Schilke 42 vs Yamaha SL-48S-GP

The Yamaha SL-48S-GP has a wider cup diameter, the Yamaha SL-48S-GP 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 42
    • Trombone
    Cup diameter23.22 mm / 0.9142 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha SL-48S-GP
      • Trombone
      Cup diameter25.25 mm / 0.9941 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Yamaha SL-48S-GP has a cup diameter of 25.25 mm / 0.9941 in compared to 23.22 mm / 0.9142 in on the Schilke 42 — a difference of 2.03 mm / 0.0799 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 42 details Yamaha SL-48S-GP details Schilke 42 equivalents Yamaha SL-48S-GP equivalents

      Compare Schilke 42 with others

      Compare Yamaha SL-48S-GP with others

      Popular Trombone comparisons

      Schilke vs Yamaha

      Browse by specification