Bach 5V vs Denis Wick RW4
The Denis Wick RW4 has a wider cup diameter, the Denis Wick RW4 has a larger throat opening.
Mouthpiece A
Bach 5V
• Cornet
Cup diameter16.25 mm
Cup depthVery deep
Rim width—
Throat diameter4.09 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick RW4
• Cornet
Cup diameter16.50 mm
Cup depthVery deep
Rim width5.27 mm
Throat diameter4.58 mm
Backboreopen
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Denis Wick RW4 has a cup diameter of 16.50 mm compared to 16.25 mm on the Bach 5V — a difference of +0.25 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Denis Wick RW4 has a wider throat (4.58 mm vs 4.09 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.