Marcinkiewicz CH 1 / 5B vs Marcinkiewicz 1S
the Marcinkiewicz 1S has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Marcinkiewicz CH 1 / 5B
• Trumpet
Backbore—
vs
Mouthpiece B
Marcinkiewicz 1S
• Trumpet
Backbore—
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.