Bach 10½E vs Denis Wick RW4
The Denis Wick RW4 has a wider cup diameter, the Denis Wick RW4 features a deeper cup, the Denis Wick RW4 has a larger throat opening.
Cup Diameter
The Denis Wick RW4 has a cup diameter of 16.50 mm compared to 15.90 mm on the Bach 10½E — a difference of +0.60 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick RW4 has a very deep cup while the Bach 10½E has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Denis Wick RW4 has a wider throat (4.58 mm vs 3.66 mm). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.