Bach 18 vs Denis Wick 3
The Denis Wick 3 has a wider cup diameter, the Denis Wick 3 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 18
• Cornet
Cup diameter15.10 mm / 0.5945 in
vs
Mouthpiece B
Denis Wick 3
• Cornet
Cup diameter16.75 mm / 0.6594 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 3 has a cup diameter of 16.75 mm / 0.6594 in compared to 15.10 mm / 0.5945 in on the Bach 18 — 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.