Which has a bigger cup — Kelly 6V or Yamaha CR-14ES-GP?

The Yamaha CR-14ES-GP has a cup diameter of 16.86 mm / 0.6638 in compared to 16.00 mm / 0.6299 in on the Kelly 6V — a difference of 0.86 mm / 0.0339 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Kelly 6V and Yamaha CR-14ES-GP?

The Kelly 6V has a — cup while the Yamaha CR-14ES-GP has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Kelly 6V vs Yamaha CR-14ES-GP

Name: Yamaha CR-14ES-GP
Brand: Yamaha

The Yamaha CR-14ES-GP has a wider cup diameter, the Kelly 6V features a deeper cup, the Kelly 6V has a larger throat opening.

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

Kelly 6V

• Cornet

Dark/Deep

BackboreL

Best suited for

📣High-volume projection — open throat for power

📋Deep V-cup to fill out cornet sound

Mouthpiece B

Yamaha CR-14ES-GP

• Cornet

BackboreStandard

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣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.

Open in interactive tool + Add third mouthpiece Kelly 6V details Yamaha CR-14ES-GP details Kelly 6V equivalents Yamaha CR-14ES-GP equivalents

Kelly 6V vs Yamaha CR-14ES-GP

Playing Characteristics

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