Chris Gohlke
12-08-2005, 04:00 AM
<div class='os_post_top_link'><a href='http://forum.ecoustics.com/bbs/messages/34579/180767.html' target='_blank'>http://forum.ecoustics.com/bbs/messages/34579/180767.html</a><br /><br /></div><i>"Of all the annoyances that can afflict any audio/video home theater or even a simple stereo installation, the notorious "ground loop" may well be the most difficult and persistent one to track down and eliminate. A "ground loop" is caused by the difference in electrical potential at different grounding points in an audio/video system. (All the grounds in an A/V system should ideally be at "0" potential.) A ground loop typically adds a loud low-frequency hum or buzz as soon as you plug in any of various audio or video components, including subwoofers, cable-TV outboard boxes, satellite-TV feeds, TV displays, amplifiers, A/V receivers or turntables. The buzz/hum is a byproduct of the multiple power supply cables and a ground voltage differential within your system and its network of interconnecting cables."</i><br /><br />Alan over at eCoustics.com has a nice article up on how to eliminate (or at least minimize) this annoying problem.