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 taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bach 12E

• Trombone

Backbore—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Marcinkiewicz 6E

• Trombone

Backbore—

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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