Bach 12 vs Yamaha HR-BACON
The Yamaha HR-BACON has a wider cup diameter, the Bach 12 features a deeper cup.
Mouthpiece A
Bach 12
• French Horn
Cup diameter16.50 mm
Cup depthMedium
Rim width—
Throat diameter4.50 mm
Backbore—
Finish—
Material—
Best suited for
All-round versatile — balanced cup for general playing
High-volume projection — open throat for power
vs
Mouthpiece B
Yamaha HR-BACON
• French Horn
Cup diameter17.99 mm
Cup depthShallow
Rim width—
Throat diameter4.50 mm
BackboreSemi-wide
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Yamaha HR-BACON has a cup diameter of 17.99 mm compared to 16.50 mm on the Bach 12 — a difference of +1.49 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
The Bach 12 has a medium cup while the Yamaha HR-BACON 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 4.50 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.