Bach 12E vs Curry 12C
The Bach 12E has a wider cup diameter, the Curry 12C features a deeper cup, the Curry 12C has a larger throat opening.
Cup Diameter
The Bach 12E has a cup diameter of 24.50 mm / 0.9646 in compared to 24.23 mm / 0.9540 in on the Curry 12C — a difference of 0.27 mm / 0.0106 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Curry 12C has a medium cup while the Bach 12E has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Curry 12C has a wider throat (5.92 mm / 0.2330 in vs 5.85 mm / 0.2303 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.