Which has a bigger cup — Bach 12E or Marcinkiewicz 6E?

The Marcinkiewicz 6E has a cup diameter of 25.78 mm / 1.0150 in compared to 24.50 mm / 0.9646 in on the Bach 12E — a difference of 1.28 mm / 0.0504 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 12E and Marcinkiewicz 6E?

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

Bach 12E vs Marcinkiewicz 6E

Name: Marcinkiewicz 6E
Brand: Marcinkiewicz

The Marcinkiewicz 6E has a wider cup diameter, the Marcinkiewicz 6E 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 12E

• Trombone

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Marcinkiewicz 6E

• Trombone

Rim width—

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.

Open in interactive tool + Add third mouthpiece Bach 12E details Marcinkiewicz 6E details Bach 12E equivalents Marcinkiewicz 6E equivalents

Bach 12E vs Marcinkiewicz 6E

Playing Characteristics

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Which is better?

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