Which has a bigger cup — Bach 11C or Schilke 45B?

The Bach 11C has a cup diameter of 24.70 mm / 0.9724 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 0.40 mm / 0.0157 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 11C and Schilke 45B?

The Schilke 45B has a medium cup while the Bach 11C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 11C vs Schilke 45B

Name: Schilke 45B
Brand: Schilke

The Bach 11C has a wider cup diameter, the Schilke 45B features a deeper cup, the Schilke 45B has a larger throat opening.

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 11C

• Trombone

Backbore—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 45B

• Trombone

Backbore15/64 .2344"

Best suited for

📣High-volume projection — open throat for power

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.

Open in interactive tool + Add third mouthpiece Bach 11C details Schilke 45B details Bach 11C equivalents Schilke 45B equivalents

Bach 11C vs Schilke 45B

Playing Characteristics

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Which is better?

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