Bach 4 vs Denis Wick SM4M
the Denis Wick SM4M features a deeper cup, the Denis Wick SM4M has a larger throat opening.
Mouthpiece A
Bach 4
• Baritone / Euphonium
Cup diameter26.00 mm / 1.0236 in
Cup depthMedium
Rim width—
Throat diameter5.85 mm / 0.2303 in
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Denis Wick SM4M
• Baritone / Euphonium
Cup diameter26.00 mm / 1.0236 in
Cup depthVery deep
Rim width6.72 mm / 0.2646 in
Throat diameter7.38 mm / 0.2906 in
Backborebarrel
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
High-volume projection — open throat for power
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 26.00 mm / 1.0236 in.
Cup Depth
The Denis Wick SM4M has a very deep cup while the Bach 4 has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
The Denis Wick SM4M 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.