Bach 3 vs Bruno Tilz 211-58 F
The Bach 3 has a wider cup diameter, the Bach 3 has a larger throat opening.
Mouthpiece A
Bach 3
• French Horn
Cup diameter17.60 mm
Cup depthMedium
Rim width—
Throat diameter4.50 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
vs
Mouthpiece B
Bruno Tilz 211-58 F
• French Horn
CatalogCup diameter17.00 mm
Cup depthMedium
Rim width—
Throat diameter3.80 mm
Backbore—
Finish—
Material—
Best suited for
High-volume projection — open throat for power
Cup Diameter
The Bach 3 has a cup diameter of 17.60 mm compared to 17.00 mm on the Bruno Tilz 211-58 F — a difference of +0.60 mm. A wider cup generally produces a fuller, darker tone but requires more air support.
Cup Depth
Both mouthpieces share a medium cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Bach 3 has a wider throat (4.50 mm vs 3.80 mm). 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.