Denis Wick 2L vs Kelly 24AW
The Denis Wick 2L has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Denis Wick 2L
• Tuba
Cup diameter32.00 mm / 1.2598 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Kelly 24AW
• Tuba
GeneralCup diameter31.24 mm / 1.2299 in
Best suited for
Orchestral playing — large cup for full, dark tone
Tuba / sousaphone
Cup Diameter
The Denis Wick 2L has a cup diameter of 32.00 mm / 1.2598 in compared to 31.24 mm / 1.2299 in on the Kelly 24AW — a difference of 0.76 mm / 0.0299 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.