Bob Reeves 43W/D/692sL vs Marcinkiewicz 5*W (Endorsee)
The Bob Reeves 43W/D/692sL has a wider cup diameter, the Bob Reeves 43W/D/692sL features a deeper cup.
Mouthpiece A
Bob Reeves 43W/D/692sL
• Cornet
Cup diameter17.07 mm / 0.6720 in
Cup depthDeep
Rim width—
Throat diameter—
Backbore692sL
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Marcinkiewicz 5*W (Endorsee)
• Cornet
Cup diameter16.76 mm / 0.6598 in
Cup depthVery shallow
Rim width—
Throat diameter3.91 mm / 0.1539 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Bob Reeves 43W/D/692sL has a cup diameter of 17.07 mm / 0.6720 in compared to 16.76 mm / 0.6598 in on the Marcinkiewicz 5*W (Endorsee) — a difference of 0.31 mm / 0.0122 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bob Reeves 43W/D/692sL has a deep cup while the Marcinkiewicz 5*W (Endorsee) 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.