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Schilke 51C4 vs Yamaha SL-48DL

The Schilke 51C4 has a wider cup diameter, the Yamaha SL-48DL 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
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
    Schilke 51C4
    • Trombone
    BackboreJ .277"
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha SL-48DL
      • Trombone
      BackboreSemi-narrow
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      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.

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