Bob Reeves 40/SV/692sL vs Bob Reeves 40/SV/X
Both mouthpieces share similar core dimensions — the differences are in the details.
Mouthpiece A
Bob Reeves 40/SV/692sL
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup depthShallow
Rim width—
Throat diameter—
Backbore692sL
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
vs
Mouthpiece B
Bob Reeves 40/SV/X
• Trumpet
Cup diameter15.88 mm / 0.6252 in
Cup depthShallow
Rim width—
Throat diameter—
BackboreX
Finish—
Material—
Best suited for
Lead / commercial — shallow cup for brightness and range
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 15.88 mm / 0.6252 in.
Cup Depth
Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.
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.