Kelly SCREAMER-BUGLE vs Monette BP7F FL
The Kelly SCREAMER-BUGLE has a wider cup diameter, the Monette BP7F FL has a larger throat opening.
Cup Diameter
The Kelly SCREAMER-BUGLE has a cup diameter of 16.00 mm / 0.6299 in compared to 15.90 mm / 0.6260 in on the Monette BP7F FL — a difference of 0.10 mm / 0.0039 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a shallow cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Monette BP7F FL has a wider throat (3.66 mm / 0.1441 in vs 3.56 mm / 0.1402 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Material
The Kelly SCREAMER-BUGLE is described as Lexan polycarbonate, and the Monette BP7F FL 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.