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Conn Connstellation 9BN vs Monette Cornet C4LVS

The Monette Cornet C4LVS has a wider cup diameter, the Conn Connstellation 9BN features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Conn Connstellation 9BN
    • Cornet
    Lead
    Cup diameter15.88 mm / 0.6252 in
    Best suited for
    📋Trumpet players seeking precise matched dimensions
    🎶Size 9 (15.88mm); smaller cup; more compact tone; Narrow rim; smaller inner radius; sharper bite. Fa
    vs
    Mouthpiece B
      Monette Cornet C4LVS
      • Cornet
      Cup diameter16.20 mm / 0.6378 in
      Best suited for
      🎵All-round versatile — balanced cup for general playing

      Cup Diameter

      The Monette Cornet C4LVS has a cup diameter of 16.20 mm / 0.6378 in compared to 15.88 mm / 0.6252 in on the Conn Connstellation 9BN — a difference of 0.32 mm / 0.0126 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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.

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