Bob Reeves 40/S/69 vs Yamaha TR-SHEW-LEAD
The Yamaha TR-SHEW-LEAD has a wider cup diameter, the Bob Reeves 40/S/69 features a deeper cup.
Mouthpiece A
Bob Reeves 40/S/69
• Trumpet
Cup diameter15.88 mm
Cup depthShallow
Rim width—
Throat diameter—
Backbore69
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Yamaha TR-SHEW-LEAD
• Trumpet
Cup diameter16.54 mm
Cup depthVery shallow
Rim width—
Throat diameter3.56 mm
BackboreNarrow
Finish—
Material—
Best suited for
Screamer / high notes — tight throat with shallow cup
Cup Diameter
The Yamaha TR-SHEW-LEAD has a cup diameter of 16.54 mm compared to 15.88 mm on the Bob Reeves 40/S/69 — a difference of +0.66 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 40/S/69 has a shallow cup while the Yamaha TR-SHEW-LEAD 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.