Marcinkiewicz CH 13S vs Marcinkiewicz CH 15S
the Marcinkiewicz CH 15S features a deeper cup, the Marcinkiewicz CH 13S has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Marcinkiewicz CH 13S
• French Horn
Throat diameter4.70 mm / 0.1850 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Marcinkiewicz CH 15S
• French Horn
Throat diameter4.57 mm / 0.1799 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Throat Diameter
The Marcinkiewicz CH 13S has a wider throat (4.70 mm / 0.1850 in vs 4.57 mm / 0.1799 in). 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.