Which has a bigger cup — Denis Wick 2SL or Kelly 25?

The Denis Wick 2SL has a cup diameter of 32.00 mm / 1.2598 in compared to 30.99 mm / 1.2201 in on the Kelly 25 — a difference of 1.01 mm / 0.0398 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick 2SL and Kelly 25?

The Kelly 25 has a medium cup while the Denis Wick 2SL has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Denis Wick 2SL vs Kelly 25

Name: Kelly 25
Brand: Kelly

The Denis Wick 2SL has a wider cup diameter, the Kelly 25 features a deeper cup.

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

The taper behind the throat leading to the shank. Affects projection and tone character.

Mouthpiece A

Denis Wick 2SL

• Tuba

Backboreopen

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Kelly 25

• Tuba

General

BackboreM

Best suited for

📋General tuba / euphonium doubler

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.