Which has a bigger cup — Denis Wick 6BL or Denis Wick 9BL?

The Denis Wick 6BL has a cup diameter of 25.40 mm / 1.0000 in compared to 25.00 mm / 0.9843 in on the Denis Wick 9BL — a difference of 0.40 mm / 0.0157 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 Denis Wick 9BL?

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

Denis Wick 6BL vs Denis Wick 9BL

Name: Denis Wick 9BL
Brand: Denis Wick

The Denis Wick 6BL has a wider cup diameter.

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

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Denis Wick 6BL

• Trombone

Material—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Denis Wick 9BL

• Trombone

Material—

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.