Bob Reeves 40/M/2 vs Monette Cornet C4LVS
The Monette Cornet C4LVS has a wider cup diameter.
Mouthpiece A
Bob Reeves 40/M/2
• Cornet
Cup diameter15.88 mm / 0.6252 in
Cup depthMedium
Rim width—
Throat diameter—
Backbore2
Finish—
Material—
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/M/2 — 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
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
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.