Which has a bigger cup — Bach 12E or Schilke 45?

The Bach 12E has a cup diameter of 24.50 mm / 0.9646 in compared to 24.38 mm / 0.9598 in on the Schilke 45 — a difference of 0.12 mm / 0.0047 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 12E and Schilke 45?

The Schilke 45 has a medium cup while the Bach 12E has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bach 12E vs Schilke 45

Name: Schilke 45
Brand: Schilke

The Bach 12E has a wider cup diameter, the Schilke 45 features a deeper cup, the Schilke 45 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 12E

• Trombone

Finish—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 45

• Trombone

Finish—

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.

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Bach 12E vs Schilke 45

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Which is better?

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