Marcinkiewicz CH 4 BS vs Yamaha SL-48DL
The Marcinkiewicz CH 4 BS has a wider cup diameter, the Yamaha SL-48DL features a deeper cup, the Marcinkiewicz CH 4 BS has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Marcinkiewicz CH 4 BS
• Trombone
Throat diameter7.04 mm / 0.2772 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha SL-48DL
• Trombone
Throat diameter6.62 mm / 0.2606 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Throat Diameter
The Marcinkiewicz CH 4 BS has a wider throat (7.04 mm / 0.2772 in vs 6.62 mm / 0.2606 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.