Bach 7 vs Denis Wick 2.5CC
The Bach 7 has a wider cup diameter, the Denis Wick 2.5CC features a deeper cup, the Bach 7 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 7
• Tuba
Cup diameter33.25 mm / 1.3091 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 2.5CC
• 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
Cup Diameter
The Bach 7 has a cup diameter of 33.25 mm / 1.3091 in compared to 32.00 mm / 1.2598 in on the Denis Wick 2.5CC — a difference of 1.25 mm / 0.0492 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.