Which has a bigger cup — Bach Mega Tone Cornet 5B or Marcinkiewicz 12?

The Marcinkiewicz 12 has a cup diameter of 16.31 mm / 0.6421 in compared to 16.25 mm / 0.6398 in on the Bach Mega Tone Cornet 5B — a difference of 0.06 mm / 0.0024 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach Mega Tone Cornet 5B and Marcinkiewicz 12?

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

Bach Mega Tone Cornet 5B vs Marcinkiewicz 12

Name: Marcinkiewicz 12
Brand: Marcinkiewicz

The Marcinkiewicz 12 has a wider cup diameter.

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 Mega Tone Cornet 5B

• Cornet

Backbore—

Mouthpiece B

Marcinkiewicz 12

• 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.