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Bach 12C vs Denis Wick 5BL

The Denis Wick 5BL has a wider cup diameter, the Denis Wick 5BL features a deeper cup, the Denis Wick 5BL has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
How deep the cup is, from shallow (brighter, easier high register) to deep (darker, fuller sound).
Mouthpiece A
    Bach 12C
    • Trombone
    Cup depthShallow
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Denis Wick 5BL
      • Trombone
      Cup depthMedium
      Best suited for
      📣High-volume projection — open throat for power

      Cup Depth

      The Denis Wick 5BL has a medium cup while the Bach 12C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      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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