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Bach 30CB vs Marcinkiewicz 8H-S

The Bach 30CB has a wider cup diameter, the Bach 30CB 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
    Bach 30CB
    • Trombone
    Cup diameter30.00 mm / 1.1811 in
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    vs
    Mouthpiece B
      Marcinkiewicz 8H-S
      • Trombone
      Cup diameter26.06 mm / 1.0260 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bach 30CB has a cup diameter of 30.00 mm / 1.1811 in compared to 26.06 mm / 1.0260 in on the Marcinkiewicz 8H-S — a difference of 3.94 mm / 0.1551 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 Bach 30CB details Marcinkiewicz 8H-S details Bach 30CB equivalents Marcinkiewicz 8H-S equivalents

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