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Marcinkiewicz ET1B. PeeblesBass Shank Only vs Schilke 45B

The Marcinkiewicz ET1B. PeeblesBass Shank Only has a wider cup diameter, the Schilke 45B features a deeper cup, the Marcinkiewicz ET1B. PeeblesBass Shank Only 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 ET1B. PeeblesBass Shank Only
    • Trombone
    Cup diameter26.14 mm / 1.0291 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 45B
      • Trombone
      Cup diameter24.30 mm / 0.9567 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Marcinkiewicz ET1B. PeeblesBass Shank Only has a cup diameter of 26.14 mm / 1.0291 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 1.84 mm / 0.0724 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 Marcinkiewicz ET1B. PeeblesBass Shank Only details Schilke 45B details Marcinkiewicz ET1B. PeeblesBass Shank Only equivalents Schilke 45B equivalents

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