Curry 1.5 DC vs Kelly 7C
The Curry 1.5 DC has a wider cup diameter, the Curry 1.5 DC features a deeper cup, the Curry 1.5 DC has a larger throat opening.
Cup Diameter
The Curry 1.5 DC has a cup diameter of 17.02 mm / 0.6700 in compared to 16.51 mm / 0.6500 in on the Kelly 7C — a difference of 0.51 mm / 0.0200 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 1.5 DC has a very deep cup while the Kelly 7C has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Curry 1.5 DC has a wider throat (3.81 mm / 0.1500 in vs 3.66 mm / 0.1441 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Material
The Curry 1.5 DC is described as unspecified, and the Kelly 7C as Lexan polycarbonate. 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.