Bach 22C vs Bach 5
The Bach 5 has a wider cup diameter, the Bach 5 features a deeper cup.
Mouthpiece A
Bach 22C
• Baritone / Euphonium
Cup diameter23.92 mm
Cup depthShallow
Rim width—
Throat diameter5.85 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bach 5
• Baritone / Euphonium
Cup diameter25.50 mm
Cup depthMedium
Rim width—
Throat diameter5.85 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Bach 5 has a cup diameter of 25.50 mm compared to 23.92 mm on the Bach 22C — a difference of +1.58 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 5 has a medium cup while the Bach 22C has a shallow cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.
Throat Diameter
Throat diameters are essentially identical at 5.85 mm, so resistance feel will be comparable.
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.