Which has a bigger cup — Bach 1½C or Bach 1X?

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

How does cup depth compare between Bach 1½C and Bach 1X?

The Bach 1X has a very deep cup while the Bach 1½C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 1½C vs Bach 1X

Name: Bach 1X
Brand: Bach

the Bach 1X features a deeper cup.

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 1½C

• Cornet

Material—

Mouthpiece B

Bach 1X

• Cornet

Material—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

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.