Which has a bigger cup — Bach 12C or Schilke 44E4?

The Bach 12C has a cup diameter of 24.50 mm / 0.9646 in compared to 24.28 mm / 0.9559 in on the Schilke 44E4 — a difference of 0.22 mm / 0.0087 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 12C and Schilke 44E4?

The Schilke 44E4 has a very deep cup while the Bach 12C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 12C vs Schilke 44E4

Name: Schilke 44E4
Brand: Schilke

The Bach 12C has a wider cup diameter, the Schilke 44E4 features a deeper cup, the Schilke 44E4 has a larger throat opening.

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 12C

• Trombone

Finish—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 44E4

• Trombone

Finish—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣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.

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Bach 12C vs Schilke 44E4

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