Denis Wick 5AL vs Yamaha SL-52S
The Denis Wick 5AL has a wider cup diameter, the Denis Wick 5AL has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 5AL
• Trombone
Cup diameter25.73 mm / 1.0130 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha SL-52S
• Trombone
Cup diameter25.65 mm / 1.0098 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 5AL has a cup diameter of 25.73 mm / 1.0130 in compared to 25.65 mm / 1.0098 in on the Yamaha SL-52S — a difference of 0.08 mm / 0.0031 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.