Marcinkiewicz 25 vs Yamaha BB-65
The Marcinkiewicz 25 has a wider cup diameter, the Yamaha BB-65 features a deeper cup, the Yamaha BB-65 has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Marcinkiewicz 25
• Tuba
Backbore—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha BB-65
• Tuba
BackboreSemi-wide
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.