Which has a bigger cup — Denis Wick 6BL or Yamaha SL-48L?

The Denis Wick 6BL has a cup diameter of 25.40 mm / 1.0000 in compared to 25.25 mm / 0.9941 in on the Yamaha SL-48L — a difference of 0.15 mm / 0.0059 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 6BL and Yamaha SL-48L?

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

Denis Wick 6BL vs Yamaha SL-48L

Name: Yamaha SL-48L
Brand: Yamaha

The Denis Wick 6BL has a wider cup diameter, the Denis Wick 6BL 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

Denis Wick 6BL

• Trombone

BackboreV-type

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha SL-48L

• 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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Denis Wick 6BL vs Yamaha SL-48L

Playing Characteristics

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What Changes If You Switch?

Which is better?

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