Bach 18 vs Marcinkiewicz 11
The Marcinkiewicz 11 has a wider cup diameter, the Marcinkiewicz 11 features a deeper cup, the Marcinkiewicz 11 has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bach 18
• French Horn
Backbore—
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 11
• French Horn
Backbore—
Best suited for
Orchestral playing — large cup for full, dark tone
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.