Conn Connstellation 7BN vs Monette Unity D7-7
The Conn Connstellation 7BN has a wider cup diameter, the Conn Connstellation 7BN features a deeper cup.
Cup Diameter
The Conn Connstellation 7BN has a cup diameter of 16.42 mm / 0.6465 in compared to 16.20 mm / 0.6378 in on the Monette Unity D7-7 — a difference of 0.22 mm / 0.0087 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Conn Connstellation 7BN has a very deep cup while the Monette Unity D7-7 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Material
The Conn Connstellation 7BN is described as Silver-plated brass, and the Monette Unity D7-7 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.