Which has a bigger cup — Bach 5A or Monette Cornet C3F FL?

The Monette Cornet C3F FL has a cup diameter of 16.30 mm / 0.6417 in compared to 16.25 mm / 0.6398 in on the Bach 5A — a difference of 0.05 mm / 0.0020 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 5A and Monette Cornet C3F FL?

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

Bach 5A vs Monette Cornet C3F FL

Name: Monette Cornet C3F FL
Brand: Monette

The Monette Cornet C3F FL has a wider cup diameter.

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 5A

• Cornet

Backbore—

Mouthpiece B

Monette Cornet C3F FL

• Cornet

Backbore—

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.