Which has a bigger cup — Bach 8½A or Curry 10.5 BBC?

The Bach 8½A has a cup diameter of 16.10 mm / 0.6339 in compared to 15.88 mm / 0.6250 in on the Curry 10.5 BBC — a difference of 0.23 mm / 0.0089 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 8½A and Curry 10.5 BBC?

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

Bach 8½A vs Curry 10.5 BBC

Name: Curry 10.5 BBC
Brand: Curry

The Bach 8½A has a wider cup diameter, the Curry 10.5 BBC has a larger throat opening.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Bach 8½A

• Cornet

Backbore—

Mouthpiece B

Curry 10.5 BBC

• Cornet

Backbore—

Best suited for

📣High-volume projection — open throat for power

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.