Yamaha SL-48L vs Yamaha SL-SULLIVAN
The Yamaha SL-SULLIVAN has a wider cup diameter, the Yamaha SL-SULLIVAN features a deeper cup, the Yamaha SL-SULLIVAN has a larger throat opening.
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
Yamaha SL-48L
• Trombone
BackboreSemi-narrow
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha SL-SULLIVAN
• Trombone
BackboreSemi-wide
Best suited for
Orchestral playing — large cup for full, dark tone
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.