Bob Reeves 42/ES/692 vs Monette Vintage D4 FL
The Bob Reeves 42/ES/692 has a wider cup diameter, the Monette Vintage D4 FL 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
Monette Vintage D4 FL
• Trumpet
Cup diameter16.20 mm
Cup depthDeep
Rim width—
Throat diameter3.66 mm
Backbore—
Finish—
Material—
Cup Diameter
The Bob Reeves 42/ES/692 has a cup diameter of 16.67 mm compared to 16.20 mm on the Monette Vintage D4 FL — a difference of +0.47 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Monette Vintage D4 FL has a deep 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.