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Marcinkiewicz 11-S vs Yamaha SL-48L-GP

The Marcinkiewicz 11-S has a wider cup diameter, the Marcinkiewicz 11-S features a deeper cup, the Yamaha SL-48L-GP has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
    Marcinkiewicz 11-S
    • Trombone
    Throat diameter5.94 mm / 0.2339 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Yamaha SL-48L-GP
      • Trombone
      Throat diameter6.62 mm / 0.2606 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      The Yamaha SL-48L-GP has a wider throat (6.62 mm / 0.2606 in vs 5.94 mm / 0.2339 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.

      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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