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Bach 15CW vs Bach 15D

Both mouthpieces share similar core dimensions — the differences are in the details.

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 15CW
    • Trombone
    Cup depthShallow
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Bach 15D
      • Trombone
      Cup depthShallow
      Best suited for
      📣High-volume projection — open throat for power

      Cup Depth

      Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.

      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 15CW details Bach 15D details Bach 15CW equivalents Bach 15D equivalents

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