Which has a bigger cup — Denis Wick SM3M or Kelly 51D-EU?

The Denis Wick SM3M has a cup diameter of 26.40 mm / 1.0394 in compared to 25.40 mm / 1.0000 in on the Kelly 51D-EU — a difference of 1.00 mm / 0.0394 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Denis Wick SM3M and Kelly 51D-EU?

The Kelly 51D-EU has a — cup while the Denis Wick SM3M has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Denis Wick SM3M vs Kelly 51D-EU

Name: Kelly 51D-EU
Brand: Kelly

The Denis Wick SM3M has a wider cup diameter, the Kelly 51D-EU 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 SM3M

• Baritone / Euphonium

Backborebarrel

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

Mouthpiece B

Kelly 51D-EU

• Baritone / Euphonium

Professional

BackboreL

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📋Professional euphonium

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 SM3M details Kelly 51D-EU details Denis Wick SM3M equivalents Kelly 51D-EU equivalents

Denis Wick SM3M vs Kelly 51D-EU

Playing Characteristics

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Denis Wick vs Kelly

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