Bach Mega Tone Cornet 1C vs Marcinkiewicz 309
The Marcinkiewicz 309 has a wider cup diameter.
Mouthpiece A
Bach Mega Tone Cornet 1C
• Cornet
Cup diameter17.00 mm / 0.6693 in
Cup depthMedium
Rim width—
Throat diameter3.73 mm / 0.1469 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Marcinkiewicz 309
• Cornet
Cup diameter17.20 mm / 0.6772 in
Cup depthMedium
Rim width—
Throat diameter3.73 mm / 0.1469 in
Backbore—
Finish—
Material—
Cup Diameter
The Marcinkiewicz 309 has a cup diameter of 17.20 mm / 0.6772 in compared to 17.00 mm / 0.6693 in on the Bach Mega Tone Cornet 1C — a difference of 0.20 mm / 0.0079 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium 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.