Which has a bigger cup — Marcinkiewicz 1 / 5B or Marcinkiewicz 3 / 5C?

The Marcinkiewicz 1 / 5B has a cup diameter of 17.35 mm / 0.6831 in compared to 17.20 mm / 0.6772 in on the Marcinkiewicz 3 / 5C — a difference of 0.15 mm / 0.0059 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Marcinkiewicz 1 / 5B and Marcinkiewicz 3 / 5C?

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

Marcinkiewicz 1 / 5B vs Marcinkiewicz 3 / 5C

Name: Marcinkiewicz 3 / 5C
Brand: Marcinkiewicz

The Marcinkiewicz 1 / 5B 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

Marcinkiewicz 1 / 5B

• Cornet

Backbore—

Mouthpiece B

Marcinkiewicz 3 / 5C

• 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.