Bach 2C vs Bob Reeves 42/ES/692
The Bob Reeves 42/ES/692 has a wider cup diameter, the Bach 2C features a deeper cup.
Mouthpiece A
Bach 2C
• Trumpet
Cup diameter16.50 mm
Cup depthMedium
Rim width—
Throat diameter3.66 mm
Backbore—
Finish—
Material—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Bob Reeves 42/ES/692
• Trumpet
Cup diameter16.67 mm
Cup depthVery shallow
Rim width—
Throat diameter—
Backbore692
Finish—
Material—
Cup Diameter
The Bob Reeves 42/ES/692 has a cup diameter of 16.67 mm compared to 16.50 mm on the Bach 2C — a difference of +0.17 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 2C has a medium cup while the Bob Reeves 42/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.