Bob Reeves 42/C/692 vs Monette Cornet C4LVS
The Bob Reeves 42/C/692 has a wider cup diameter, the Bob Reeves 42/C/692 features a deeper cup.
Mouthpiece A
Bob Reeves 42/C/692
• Cornet
Cup diameter16.67 mm / 0.6563 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore692
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 Bob Reeves 42/C/692 has a cup diameter of 16.67 mm / 0.6563 in compared to 16.20 mm / 0.6378 in on the Monette Cornet C4LVS — a difference of 0.47 mm / 0.0185 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 42/C/692 has a deep cup while the Monette Cornet C4LVS has a medium 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.