Curry 5 BBC vs Kelly 5C
the Curry 5 BBC has a larger throat opening.
Mouthpiece A
Curry 5 BBC
• Cornet
Cup diameter16.76 mm / 0.6600 in
Cup depthVery deep
Rim width—
Throat diameter4.06 mm / 0.1600 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Kelly 5C
• Cornet
GeneralCup diameter16.76 mm / 0.6598 in
Cup depthVery deep
Rim width—
Throat diameter3.80 mm / 0.1496 in
BackboreM
Finish—
MaterialLexan polycarbonate
Best suited for
High-volume projection — open throat for power
Mid-range all-purpose
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 16.76 mm / 0.6600 in.
Cup Depth
Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Curry 5 BBC has a wider throat (4.06 mm / 0.1600 in vs 3.80 mm / 0.1496 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Material
The Curry 5 BBC is described as unspecified, and the Kelly 5C as Lexan polycarbonate. Material affects mass, warmth, and how quickly the piece responds.
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.