Monette Cornet BP2 FL vs Yamaha CR-7D4dS
The Monette Cornet BP2 FL has a wider cup diameter, the Yamaha CR-7D4dS has a larger throat opening.
Cup Diameter
The Monette Cornet BP2 FL has a cup diameter of 17.00 mm / 0.6693 in compared to 16.24 mm / 0.6394 in on the Yamaha CR-7D4dS — a difference of 0.76 mm / 0.0299 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Yamaha CR-7D4dS has a wider throat (4.10 mm / 0.1614 in vs 3.66 mm / 0.1441 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.