Bob Reeves 40/C/69 vs Monette Cornet C4LVS
The Monette Cornet C4LVS has a wider cup diameter, the Bob Reeves 40/C/69 features a deeper cup.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bob Reeves 40/C/69
• Cornet
Cup diameter15.88 mm / 0.6252 in
vs
Mouthpiece B
Monette Cornet C4LVS
• Cornet
Cup diameter16.20 mm / 0.6378 in
Best suited for
All-round versatile — balanced cup for general playing
Cup Diameter
The Monette Cornet C4LVS has a cup diameter of 16.20 mm / 0.6378 in compared to 15.88 mm / 0.6252 in on the Bob Reeves 40/C/69 — a difference of 0.32 mm / 0.0126 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.