Bob Reeves 41/ES/2 vs Schilke 13A4a
The Schilke 13A4a has a wider cup diameter, the Schilke 13A4a features a deeper cup.
Mouthpiece A
Bob Reeves 41/ES/2
• Trumpet
Cup diameter16.27 mm / 0.6406 in
Cup depthVery shallow
Rim width—
Throat diameter—
Backbore2
Finish—
Material—
vs
Mouthpiece B
Schilke 13A4a
• Trumpet
Cup diameter16.76 mm / 0.6598 in
Cup depthShallow
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore27
Finish—
Material—
Cup Diameter
The Schilke 13A4a has a cup diameter of 16.76 mm / 0.6598 in compared to 16.27 mm / 0.6406 in on the Bob Reeves 41/ES/2 — a difference of 0.49 mm / 0.0193 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Schilke 13A4a has a shallow cup while the Bob Reeves 41/ES/2 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.