Which has a bigger cup — Curry 6 BBC or Kelly 5C?

The Kelly 5C has a cup diameter of 16.76 mm / 0.6598 in compared to 16.71 mm / 0.6580 in on the Curry 6 BBC — a difference of 0.05 mm / 0.0018 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Curry 6 BBC and Kelly 5C?

Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.

Curry 6 BBC vs Kelly 5C

Name: Kelly 5C
Brand: Kelly

The Kelly 5C has a wider cup diameter, the Curry 6 BBC has a larger throat opening.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Curry 6 BBC

• Cornet

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Kelly 5C

• Cornet

General

MaterialLexan polycarbonate

Best suited for

📣High-volume projection — open throat for power

📋Mid-range all-purpose

Material

The Curry 6 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.

Open in interactive tool + Add third mouthpiece Curry 6 BBC details Kelly 5C details Curry 6 BBC equivalents Kelly 5C equivalents

Curry 6 BBC vs Kelly 5C

Material

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

Compare Curry 6 BBC with others

Compare Kelly 5C with others

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