Many designers and installers of audio/video systems think of grounding and interfacing as a
black art. How many times have you heard someone say that a cable is “picking up” noise —
presumably from the air like a radio receiver? Or that the solution is “better” shielding? Even
equipment manufacturers often don’t have a clue what’s really going on. The most basic rules of
physics are routinely overlooked, ignored, or forgotten. College electrical engineering courses
rarely even mention practical issues of grounding. As a result, myth and misinformation have
become epidemic! This course intends to replace mystery with insight and knowledge.