Curry 10.5 BBC vs Curry 1.5 DC
The Curry 1.5 DC has a wider cup diameter, the Curry 10.5 BBC 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 15.88 mm / 0.6250 in on the Curry 10.5 BBC — a difference of 1.14 mm / 0.0450 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a very deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Curry 10.5 BBC has a wider throat (4.06 mm / 0.1600 in vs 3.81 mm / 0.1500 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.