Bach 18 vs Marcinkiewicz 13
The Marcinkiewicz 13 has a wider cup diameter, the Marcinkiewicz 13 features a deeper cup, the Marcinkiewicz 13 has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 18
• French Horn
Throat diameter4.50 mm
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz 13
• French Horn
Throat diameter4.70 mm
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Throat Diameter
The Marcinkiewicz 13 has a wider throat (4.70 mm vs 4.50 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.