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

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-48S-GP — 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-48S-GP?

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

Denis Wick 6BL vs Yamaha SL-48S-GP

Name: Yamaha SL-48S-GP
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 width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Denis Wick 6BL

• Trombone

Rim width6.26 mm / 0.2465 in

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Yamaha SL-48S-GP

• 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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Denis Wick 6BL vs Yamaha SL-48S-GP

Playing Characteristics

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What Changes If You Switch?

Which is better?

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Denis Wick vs Yamaha

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