Which has a bigger cup — Bach 8½A or Marcinkiewicz 11S?

The Marcinkiewicz 11S has a cup diameter of 16.31 mm / 0.6421 in compared to 16.10 mm / 0.6339 in on the Bach 8½A — a difference of 0.21 mm / 0.0083 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 8½A and Marcinkiewicz 11S?

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

Bach 8½A vs Marcinkiewicz 11S

Name: Marcinkiewicz 11S
Brand: Marcinkiewicz

The Marcinkiewicz 11S has a wider cup diameter, the Marcinkiewicz 11S 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 8½A

• Cornet

Backbore—

Mouthpiece B

Marcinkiewicz 11S

• Cornet

Backbore—

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.