Which has a bigger cup — Denis Wick 12CS or Kelly SKY-SS?

The Kelly SKY-SS has a cup diameter of 24.64 mm compared to 24.50 mm on the Denis Wick 12CS — a difference of +0.14 mm. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 12CS and Kelly SKY-SS?

The Denis Wick 12CS has a medium cup while the Kelly SKY-SS has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Denis Wick 12CS vs Kelly SKY-SS

The Kelly SKY-SS has a wider cup diameter, the Denis Wick 12CS features a deeper cup.

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

The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.

Mouthpiece A

Denis Wick 12CS

• Trombone

Throat diameter6.10 mm

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Kelly SKY-SS

• Trombone

Lead

Throat diameter—

Best suited for

📋Professional lead trombone

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.

Open in interactive tool + Add third mouthpiece Denis Wick 12CS details Kelly SKY-SS details Denis Wick 12CS equivalents Kelly SKY-SS equivalents

Denis Wick 12CS vs Kelly SKY-SS

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

Compare Denis Wick 12CS with others

Compare Kelly SKY-SS with others

Popular Trombone comparisons

Denis Wick vs Kelly

Browse by specification