Yamaha BL-59L vs Yamaha BL-60BL
The Yamaha BL-60BL has a wider cup diameter, the Yamaha BL-59L features a deeper cup, the Yamaha BL-59L 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
Yamaha BL-59L
• Trombone
Rim width—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha BL-60BL
• Trombone
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.