Bob Reeves 41/SV/692sL vs Conn Precision 6
The Conn Precision 6 has a wider cup diameter.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bob Reeves 41/SV/692sL
• Cornet
Cup diameter16.27 mm / 0.6406 in
vs
Mouthpiece B
Conn Precision 6
• Cornet
LeadCup diameter16.41 mm / 0.6461 in
Best suited for
Professional lead players
Recommended for professionals; small throat
Cup Diameter
The Conn Precision 6 has a cup diameter of 16.41 mm / 0.6461 in compared to 16.27 mm / 0.6406 in on the Bob Reeves 41/SV/692sL — a difference of 0.14 mm / 0.0055 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.