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Bob Reeves 43.5/F vs Bruno Tilz 210-S 12

The Bob Reeves 43.5/F has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Bob Reeves 43.5/F
    • Flugelhorn
    Cup diameter17.26 mm / 0.6795 in
    vs
    Mouthpiece B
      Bruno Tilz 210-S 12
      • Flugelhorn
      Catalog
      Cup diameter17.00 mm / 0.6693 in
      Best suited for
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bob Reeves 43.5/F has a cup diameter of 17.26 mm / 0.6795 in compared to 17.00 mm / 0.6693 in on the Bruno Tilz 210-S 12 — a difference of 0.26 mm / 0.0102 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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.

      Open in interactive tool + Add third mouthpiece Bob Reeves 43.5/F details Bruno Tilz 210-S 12 details Bob Reeves 43.5/F equivalents Bruno Tilz 210-S 12 equivalents

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