Conn Connstellation 7CW vs Monette Cornet E1-5M S12
The Monette Cornet E1-5M S12 has a wider cup diameter, the Conn Connstellation 7CW features a deeper cup.
Cup Diameter
The Monette Cornet E1-5M S12 has a cup diameter of 17.00 mm / 0.6693 in compared to 16.42 mm / 0.6465 in on the Conn Connstellation 7CW — a difference of 0.58 mm / 0.0228 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Conn Connstellation 7CW has a — cup while the Monette Cornet E1-5M S12 has a very deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Conn Connstellation 7CW is described as Silver-plated brass, and the Monette Cornet E1-5M S12 as unspecified. Material affects mass, warmth, and how quickly the piece responds.
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.