Bach 3B vs Marcinkiewicz 12
the Marcinkiewicz 12 has a larger throat opening.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 3B
• Cornet
Rim width—
vs
Mouthpiece B
Marcinkiewicz 12
• 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.