Bruno Tilz 210-S 6 1/2 vs Bruno Tilz 210-S 9 E
the Bruno Tilz 210-S 9 E has a larger throat opening.
Mouthpiece A
Bruno Tilz 210-S 6 1/2
• Flugelhorn
CatalogCup diameter17.00 mm / 0.6693 in
Cup depthDeep
Rim width—
Throat diameter3.50 mm / 0.1378 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
vs
Mouthpiece B
Bruno Tilz 210-S 9 E
• Flugelhorn
CatalogCup diameter17.00 mm / 0.6693 in
Cup depthDeep
Rim width—
Throat diameter3.70 mm / 0.1457 in
Backbore—
Finish—
Material—
Best suited for
Orchestral playing — large cup for full, dark tone
Cup Diameter
Both mouthpieces have virtually identical cup diameters at 17.00 mm / 0.6693 in.
Cup Depth
Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.
Throat Diameter
The Bruno Tilz 210-S 9 E has a wider throat (3.70 mm / 0.1457 in vs 3.50 mm / 0.1378 in). A wider throat allows more air through, increasing volume and projection but reducing resistance.
Which is better?
Both mouthpieces are categorized as "Catalog" — the physical dimensions above will determine which suits your embouchure and playing style better.