Bob Reeves 42/SV/692s vs Marcinkiewicz CH 13
The Bob Reeves 42/SV/692s has a wider cup diameter, the Marcinkiewicz CH 13 features a deeper cup.
Mouthpiece A
Bob Reeves 42/SV/692s
• Trumpet
Cup diameter16.67 mm / 0.6563 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore692s
Finish—
Material—
vs
Mouthpiece B
Marcinkiewicz CH 13
• Trumpet
Cup diameter16.31 mm / 0.6421 in
Cup depthVery deep
Rim width—
Throat diameter3.66 mm / 0.1441 in
Backbore—
Finish—
Material—
Cup Diameter
The Bob Reeves 42/SV/692s has a cup diameter of 16.67 mm / 0.6563 in compared to 16.31 mm / 0.6421 in on the Marcinkiewicz CH 13 — a difference of 0.36 mm / 0.0142 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Marcinkiewicz CH 13 has a very deep cup while the Bob Reeves 42/SV/692s has a 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.