Denis Wick 3SL vs Yamaha BB-BOBO-SYM-GP
The Yamaha BB-BOBO-SYM-GP has a wider cup diameter, the Denis Wick 3SL has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 3SL
• Tuba
Cup diameter31.25 mm / 1.2303 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha BB-BOBO-SYM-GP
• Tuba
Cup diameter32.90 mm / 1.2953 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Yamaha BB-BOBO-SYM-GP has a cup diameter of 32.90 mm / 1.2953 in compared to 31.25 mm / 1.2303 in on the Denis Wick 3SL — a difference of 1.65 mm / 0.0650 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.