Home › Trombone › Bach 17 vs Schilke 42

Bach 17 vs Schilke 42

The Bach 17 has a wider cup diameter, the Schilke 42 has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Bach 17
    • Trombone
    Cup diameter24.20 mm / 0.9528 in
    Cup depthMedium
    Rim width—
    Throat diameter5.85 mm / 0.2303 in
    Backbore—
    Finish—
    Material—
    Best suited for
    📣High-volume projection — open throat for power
    vs
    Mouthpiece B
      Schilke 42
      • Trombone
      Cup diameter23.22 mm / 0.9142 in
      Cup depthMedium
      Rim width—
      Throat diameter5.95 mm / 0.2343 in
      Backbore15/64 .2344"
      Finish—
      Material—
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bach 17 has a cup diameter of 24.20 mm / 0.9528 in compared to 23.22 mm / 0.9142 in on the Schilke 42 — a difference of 0.98 mm / 0.0386 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      Cup Depth

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

      Throat Diameter

      The Schilke 42 has a wider throat (5.95 mm / 0.2343 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.

      Open in interactive tool + Add third mouthpiece Bach 17 details Schilke 42 details Bach 17 equivalents Schilke 42 equivalents

      Compare Bach 17 with others

      Compare Schilke 42 with others

      Popular Trombone comparisons

      Bach vs Schilke

      Browse by specification