Conn Double French Horn in F/B♭, CHR511Conn CHR511 Intermediate Double French Horn in F Bb Geyer Wrap Conn has been building French horns in America for over a century, and the CHR511 is where that professional heritage becomes accessible to the advancing player. Sitting between student and professional tiers, this intermediate Geyer wrap double horn brings key components of Conns flagship 11DN directly to the player without the professional price tag. The defining feature of the CHR511 is