Denis Wick 5BS vs Kelly 5G-LS

The Denis Wick 5BS has a wider cup diameter, the Kelly 5G-LS features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Denis Wick 5BS
    • Trombone
    Cup diameter25.73 mm
    Cup depthMedium
    Rim width6.64 mm
    Throat diameter6.87 mm
    Backboremedium
    Finish
    Material
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Kelly 5G-LS
      • Trombone
      Orchestral
      Cup diameter25.40 mm
      Cup depth
      Rim width
      Throat diameter
      BackboreL
      Finish
      MaterialLexan polycarbonate
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📋Symphonic trombone / euphonium

      Cup Diameter

      The Denis Wick 5BS has a cup diameter of 25.73 mm compared to 25.40 mm on the Kelly 5G-LS — a difference of +0.33 mm. A wider cup generally produces a fuller, darker tone but requires more air support.

      Cup Depth

      The Kelly 5G-LS has a — cup while the Denis Wick 5BS has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

      Material

      The Denis Wick 5BS is described as unspecified, and the Kelly 5G-LS as Lexan polycarbonate. Material affects mass, warmth, and how quickly the piece responds.

      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 Denis Wick 5BS details Kelly 5G-LS details Denis Wick 5BS equivalents Kelly 5G-LS equivalents