Bob Reeves 42/ES/692 vs Yamaha TR-SHEW-JAZZ
The Yamaha TR-SHEW-JAZZ has a wider cup diameter, the Yamaha TR-SHEW-JAZZ features a deeper cup.
Mouthpiece A
Bob Reeves 42/ES/692
• Trumpet
Cup diameter16.67 mm
Cup depthVery shallow
Rim width—
Throat diameter—
Backbore692
Finish—
Material—
vs
Mouthpiece B
Yamaha TR-SHEW-JAZZ
• Trumpet
Cup diameter16.85 mm
Cup depthMedium
Rim width—
Throat diameter3.65 mm
BackboreStandard
Finish—
Material—
Cup Diameter
The Yamaha TR-SHEW-JAZZ has a cup diameter of 16.85 mm compared to 16.67 mm on the Bob Reeves 42/ES/692 — a difference of +0.18 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Yamaha TR-SHEW-JAZZ has a medium cup while the Bob Reeves 42/ES/692 has a very shallow 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.