Bach 12E vs Denis Wick 4.5AL
The Denis Wick 4.5AL has a wider cup diameter, the Denis Wick 4.5AL features a deeper cup, the Denis Wick 4.5AL 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 12E
• Trombone
Rim width—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 4.5AL
• Trombone
Rim width6.80 mm / 0.2677 in
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.