Which has a bigger cup — Schilke 45B or Yamaha SL-46C2S?

The Yamaha SL-46C2S has a cup diameter of 24.59 mm / 0.9681 in compared to 24.30 mm / 0.9567 in on the Schilke 45B — a difference of 0.29 mm / 0.0114 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Schilke 45B and Yamaha SL-46C2S?

Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.

Schilke 45B vs Yamaha SL-46C2S

Name: Yamaha SL-46C2S
Brand: Yamaha

The Yamaha SL-46C2S has a wider cup diameter, 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

Schilke 45B

• Trombone

Backbore15/64 .2344"

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha SL-46C2S

• Trombone

BackboreSemi-narrow

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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Schilke 45B vs Yamaha SL-46C2S

Playing Characteristics

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What Changes If You Switch?

Which is better?

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