Denis Wick 4 vs Yamaha BB-65
The Yamaha BB-65 has a wider cup diameter, the Denis Wick 4 features a deeper cup, the Yamaha BB-65 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 4
• Tuba
Cup diameter30.50 mm / 1.2008 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha BB-65
• Tuba
Cup diameter30.95 mm / 1.2185 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Yamaha BB-65 has a cup diameter of 30.95 mm / 1.2185 in compared to 30.50 mm / 1.2008 in on the Denis Wick 4 — a difference of 0.45 mm / 0.0177 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.