Which has a bigger cup — Bach 12E or Schilke 59?

The Schilke 59 has a cup diameter of 28.52 mm / 1.1228 in compared to 24.50 mm / 0.9646 in on the Bach 12E — a difference of 4.02 mm / 0.1583 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 59?

The Schilke 59 has a deep 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 59

Name: Schilke 59
Brand: Schilke

The Schilke 59 has a wider cup diameter, the Schilke 59 features a deeper cup, the Schilke 59 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 12E

• Trombone

Backbore—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Schilke 59

• Trombone

Backbore19/64.2969"

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 12E vs Schilke 59

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