Which has a bigger cup — Bach 1¼C or Schilke M150?

The Schilke M150 has a cup diameter of 17.52 mm / 0.6898 in compared to 17.00 mm / 0.6693 in on the Bach 1¼C — a difference of 0.52 mm / 0.0205 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 1¼C and Schilke M150?

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

Bach 1¼C vs Schilke M150

Name: Schilke M150
Brand: Schilke

The Schilke M150 has a wider cup diameter, the Schilke M150 has a larger throat opening.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bach 1¼C

• Trumpet

Backbore—

Mouthpiece B

Schilke M150

• Trumpet

Backbore24 / .1520"

Best suited for

📣High-volume projection — open throat for power

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.