Bach 5V vs Yamaha CR-14ES-GP
The Yamaha CR-14ES-GP has a wider cup diameter, the Bach 5V has a larger throat opening.
The narrowest point at the bottom of the cup. Affects resistance, volume, and tone color.
Mouthpiece A
Bach 5V
• Cornet
Throat diameter4.09 mm / 0.1610 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha CR-14ES-GP
• Cornet
Throat diameter3.98 mm / 0.1567 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Throat Diameter
The Bach 5V has a wider throat (4.09 mm / 0.1610 in vs 3.98 mm / 0.1567 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.