Denis Wick 10CS vs Denis Wick 9BS
the Denis Wick 9BS has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Denis Wick 10CS
• Trombone
Throat diameter6.24 mm / 0.2457 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 9BS
• Trombone
Throat diameter6.66 mm / 0.2622 in
Best suited for
High-volume projection — open throat for power
Throat Diameter
The Denis Wick 9BS has a wider throat (6.66 mm / 0.2622 in vs 6.24 mm / 0.2457 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.