Which has a bigger cup — Bach 17 or Schilke 38D?

The Bach 17 has a cup diameter of 24.20 mm / 0.9528 in compared to 19.73 mm / 0.7768 in on the Schilke 38D — a difference of 4.47 mm / 0.1760 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 17 and Schilke 38D?

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

Bach 17 vs Schilke 38D

Name: Schilke 38D
Brand: Schilke

The Bach 17 has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bach 17

• Baritone / Euphonium

Finish—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 38D

• Baritone / Euphonium

Finish—

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.