Bach 7 vs Denis Wick SM4
The Denis Wick SM4 has a wider cup diameter, the Denis Wick SM4 features a deeper cup, the Denis Wick SM4 has a larger throat opening.
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
Bach 7
• Baritone / Euphonium
Cup diameter24.75 mm / 0.9744 in
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick SM4
• Baritone / Euphonium
Cup diameter26.00 mm / 1.0236 in
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
The Denis Wick SM4 has a cup diameter of 26.00 mm / 1.0236 in compared to 24.75 mm / 0.9744 in on the Bach 7 — a difference of 1.25 mm / 0.0492 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.