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Marcinkiewicz EBT3E. Tack vs Yamaha SL-48S-GP

The Marcinkiewicz EBT3E. Tack has a wider cup diameter, the Marcinkiewicz EBT3E. Tack 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
    Marcinkiewicz EBT3E. Tack
    • Trombone
    Cup diameter28.35 mm / 1.1161 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 Marcinkiewicz EBT3E. Tack has a cup diameter of 28.35 mm / 1.1161 in compared to 25.25 mm / 0.9941 in on the Yamaha SL-48S-GP — a difference of 3.10 mm / 0.1220 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.

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