Which has a bigger cup — Bach 1½C or Giardinelli 17M?

The Bach 1½C has a cup diameter of 17.00 mm / 0.6693 in compared to 15.00 mm / 0.5906 in on the Giardinelli 17M — a difference of 2.00 mm / 0.0787 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 1½C and Giardinelli 17M?

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

Bach 1½C vs Giardinelli 17M

Name: Giardinelli 17M
Brand: Giardinelli

The Bach 1½C has a wider cup diameter.

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

Surface plating or treatment (e.g. silver plate, gold trim). Affects feel, durability, and appearance.

Mouthpiece A

Bach 1½C

• Cornet

Finish—

Mouthpiece B

Giardinelli 17M

• Cornet

Finish—

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.