Which has a bigger cup — Bach 12E or Schilke 47?

The Schilke 47 has a cup diameter of 24.99 mm / 0.9839 in compared to 24.50 mm / 0.9646 in on the Bach 12E — a difference of 0.49 mm / 0.0193 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 47?

The Schilke 47 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 47

Name: Schilke 47
Brand: Schilke

The Schilke 47 has a wider cup diameter, the Schilke 47 features a deeper cup, the Schilke 47 has a larger throat opening.

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

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Bach 12E

• Trombone

Rim width—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 47

• Trombone

Rim width—

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 47

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Which is better?

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