Bach 9 vs Denis Wick 5AL
The Denis Wick 5AL has a wider cup diameter, the Bach 9 features a deeper cup, the Denis Wick 5AL has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 9
• Trombone
Cup diameter24.72 mm / 0.9732 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick 5AL
• Trombone
Cup diameter25.73 mm / 1.0130 in
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Denis Wick 5AL has a cup diameter of 25.73 mm / 1.0130 in compared to 24.72 mm / 0.9732 in on the Bach 9 — a difference of 1.01 mm / 0.0398 in. A wider cup generally produces a fuller, darker tone but requires more air support.
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.
Compare Bach 9 with others
Compare Denis Wick 5AL with others
Popular Trombone comparisons
- Giardinelli Sym. T vs Bach 12E
- Bach 12E vs Bob Reeves 5G Gladstone
- Yamaha SL-YEO-S vs Marcinkiewicz ET3C. Loper
- Denis Wick 6BL vs Conn Connstellation 7CW
- Schilke 45B vs Marcinkiewicz ET3C. Loper
- Schilke 53 vs Giardinelli Sym. T
- Yamaha SL-48DL vs Yamaha SL-YEO-S
- Conn Connstellation 7CW vs Bach 6½A (small shank)