Which has a bigger cup — Bach 5B or Monette Cornet BP4LD FL?

The Bach 5B has a cup diameter of 16.25 mm / 0.6398 in compared to 16.20 mm / 0.6378 in on the Monette Cornet BP4LD FL — 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 5B and Monette Cornet BP4LD FL?

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

Bach 5B vs Monette Cornet BP4LD FL

Name: Monette Cornet BP4LD FL
Brand: Monette

The Bach 5B has a wider cup diameter.

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

Bach 5B

• Cornet

Material—

Mouthpiece B

Monette Cornet BP4LD FL

• Cornet

Material—

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.