Which has a bigger cup — Bach 1½C or Marcinkiewicz 1 / 5B?

The Marcinkiewicz 1 / 5B has a cup diameter of 17.35 mm / 0.6831 in compared to 17.00 mm / 0.6693 in on the Bach 1½C — a difference of 0.35 mm / 0.0138 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 1½C and Marcinkiewicz 1 / 5B?

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

Bach 1½C vs Marcinkiewicz 1 / 5B

Name: Marcinkiewicz 1 / 5B
Brand: Marcinkiewicz

The Marcinkiewicz 1 / 5B has a wider cup diameter, the Marcinkiewicz 1 / 5B has a larger throat opening.

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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Bach 1½C

• Cornet

Rim width—

Mouthpiece B

Marcinkiewicz 1 / 5B

• Cornet

Rim width—

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.