Bach 10½C vs Yamaha TR-14B4-GP
The Yamaha TR-14B4-GP has a wider cup diameter, the Bach 10½C features a deeper cup, the Bach 10½C has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Bach 10½C
• Trumpet
Backbore—
vs
Mouthpiece B
Yamaha TR-14B4-GP
• Trumpet
BackboreSemi-narrow
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.