Bach 15 vs Denis Wick SM3M
The Denis Wick SM3M has a wider cup diameter, the Denis Wick SM3M features a deeper cup, the Denis Wick SM3M has a larger throat opening.
Cup Diameter
The Denis Wick SM3M has a cup diameter of 26.40 mm / 1.0394 in compared to 24.40 mm / 0.9606 in on the Bach 15 — a difference of 2.00 mm / 0.0787 in. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Denis Wick SM3M has a very deep cup while the Bach 15 has a deep cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Denis Wick SM3M has a wider throat (7.38 mm / 0.2906 in vs 5.85 mm / 0.2303 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
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.