Denis Wick 10CS vs Denis Wick 9BL
the Denis Wick 9BL has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Denis Wick 10CS
• Trombone
Backboremedium
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 9BL
• Trombone
BackboreV-type
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.