Bach 3C vs Schilke M150D
The Schilke M150D has a wider cup diameter, the Schilke M150D has a larger throat opening.
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
Bach 3C
• Trumpet
Rim width—
Best suited for
All-round versatile — balanced cup for general playing
vs
Mouthpiece B
Schilke M150D
• Trumpet
Rim width—
Best suited for
High-volume projection — open throat for power
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.