This calls for an Oliver Stone movie.
I'm thinking Sam Tellig hung out with Oswald, who, besides collecting curtain rods, was into the same S.E.T.amps Sam liked in '63. That means- obviously- Sam and Oswald spent time together and Sam soon became a Patsy just like Lee Harvey. But Sam was an Audio Industry Patsy, having dropped out of the Fair Play For Cuba club.
In later years, Sam was sent to infiltrate the Stereophile staff,leading to the hiring of Art Dudley- an obvious communist.
Sam's love for SET means, as a Patsy, he's drawn to highly efficient speakers- like ZU!
See how it all fits together so perfectly?