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Denis Wick 5AL vs Denis Wick 5BL

the Denis Wick 5AL has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Denis Wick 5AL
    • Trombone
    Cup diameter25.73 mm / 1.0130 in
    Cup depthMedium
    Rim width6.64 mm / 0.2614 in
    Throat diameter7.30 mm / 0.2874 in
    Backborebarrel
    Finish—
    Material—
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Denis Wick 5BL
      • Trombone
      Cup diameter25.73 mm / 1.0130 in
      Cup depthMedium
      Rim width6.64 mm / 0.2614 in
      Throat diameter6.87 mm / 0.2705 in
      Backboremedium
      Finish—
      Material—
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      Both mouthpieces have virtually identical cup diameters at 25.73 mm / 1.0130 in.

      Cup Depth

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

      Throat Diameter

      The Denis Wick 5AL has a wider throat (7.30 mm / 0.2874 in vs 6.87 mm / 0.2705 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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