Bach Mega Tone Cornet 5B vs Marcinkiewicz 11
The Marcinkiewicz 11 has a wider cup diameter.
Mouthpiece A
Bach Mega Tone Cornet 5B
• Cornet
Cup diameter16.25 mm / 0.6398 in
Cup depthDeep
Rim width—
Throat diameter3.73 mm / 0.1469 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Marcinkiewicz 11
• Cornet
Cup diameter16.31 mm / 0.6421 in
Cup depthDeep
Rim width—
Throat diameter3.73 mm / 0.1469 in
Backbore—
Finish—
Material—
Cup Diameter
The Marcinkiewicz 11 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.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
Throat diameters are essentially identical at 3.73 mm / 0.1469 in, so resistance feel will be comparable.
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.