Which has a bigger cup — Bach 1B or Monette Cornet BP1-5 Rim?

Both mouthpieces have virtually identical cup diameters at 17.00 mm / 0.6693 in.

How does cup depth compare between Bach 1B and Monette Cornet BP1-5 Rim?

The Bach 1B has a deep cup while the Monette Cornet BP1-5 Rim has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 1B vs Monette Cornet BP1-5 Rim

Name: Monette Cornet BP1-5 Rim
Brand: Monette

the Bach 1B features a deeper cup.

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 1B

• Cornet

Backbore—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

Mouthpiece B

Monette Cornet BP1-5 Rim

• 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.