Bach 10½C vs Bob Reeves Piccolo 41/ES/692
The Bob Reeves Piccolo 41/ES/692 has a wider cup diameter, the Bach 10½C features a deeper cup.
Mouthpiece A
Bach 10½C
• Trumpet
Cup diameter15.90 mm / 0.6260 in
Cup depthMedium
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
vs
Mouthpiece B
Bob Reeves Piccolo 41/ES/692
• Trumpet
Cup diameter16.27 mm / 0.6406 in
Cup depthVery shallow
Rim width—
Throat diameter—
Backbore692
Finish—
Material—
Cup Diameter
The Bob Reeves Piccolo 41/ES/692 has a cup diameter of 16.27 mm / 0.6406 in compared to 15.90 mm / 0.6260 in on the Bach 10½C — a difference of 0.37 mm / 0.0146 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 10½C has a medium cup while the Bob Reeves Piccolo 41/ES/692 has a very 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.