Bach 12E vs Denis Wick 10CS

The Denis Wick 10CS has a wider cup diameter, the Denis Wick 10CS features a deeper cup, the Denis Wick 10CS 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
    Bach 12E
    • Trombone
    Throat diameter5.85 mm / 0.2303 in
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Denis Wick 10CS
      • Trombone
      Throat diameter6.24 mm / 0.2457 in
      Best suited for
      📣High-volume projection — open throat for power

      Throat Diameter

      The Denis Wick 10CS has a wider throat (6.24 mm / 0.2457 in vs 5.85 mm / 0.2303 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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