Bob Reeves 5G Gladstone vs Denis Wick 4BL
The Denis Wick 4BL has a wider cup diameter, the Bob Reeves 5G Gladstone features a deeper cup.
Mouthpiece A
Bob Reeves 5G Gladstone
• Trombone
Cup diameter25.55 mm
Cup depthDeep
Rim width—
Throat diameter—
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Denis Wick 4BL
• Trombone
Cup diameter25.90 mm
Cup depthMedium
Rim width6.77 mm
Throat diameter7.13 mm
Backboremedium
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 4BL has a cup diameter of 25.90 mm compared to 25.55 mm on the Bob Reeves 5G Gladstone — a difference of +0.35 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 5G Gladstone has a deep cup while the Denis Wick 4BL has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
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.
Compare Bob Reeves 5G Gladstone with others
Compare Denis Wick 4BL with others
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