Bob Reeves 40/S/69 vs Monette Cornet C4LVS
The Monette Cornet C4LVS has a wider cup diameter, the Monette Cornet C4LVS features a deeper cup.
Mouthpiece A
Bob Reeves 40/S/69
• Cornet
Cup diameter15.88 mm / 0.6252 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore69
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Monette Cornet C4LVS
• Cornet
Cup diameter16.20 mm / 0.6378 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
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/S/69 — a difference of 0.32 mm / 0.0126 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Monette Cornet C4LVS has a medium cup while the Bob Reeves 40/S/69 has a 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.