Marcinkiewicz CH 13S vs Marcinkiewicz CH 15S
the Marcinkiewicz CH 15S features a deeper cup, the Marcinkiewicz CH 13S has a larger throat opening.
Mouthpiece A
Marcinkiewicz CH 13S
• French Horn
Cup diameter17.42 mm / 0.6858 in
Cup depthDeep
Rim width—
Throat diameter4.70 mm / 0.1850 in
Backbore—
Finish—
Material—
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
Cup diameter17.42 mm / 0.6858 in
Cup depthVery deep
Rim width—
Throat diameter4.57 mm / 0.1799 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 17.42 mm / 0.6858 in.
Cup Depth
The Marcinkiewicz CH 15S has a very deep cup while the Marcinkiewicz CH 13S has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.