Wire Tangle?????

A friend of mine was having trouble with noise on his system, and asked me to come over and look at it. He had "tidied up" the back of his center by neatly tye-wrapping and using cable channel materials. It looked very nice, but that is what was causing all the problems. We took it all apart, separated the power carrying lines from the signal lines, and kept them loose but separate, and it went back to working OK again.

Crossing by 90 degrees as mentioned above reduces the cross talk coupling enormously. Cables will need to cross, so you keep them away from each other, and then make a run across at 90 degrees. Having some open hooks screwed in the back of the entertainment center allows you to drape the cable into the proper positions,

This thread jogged my memory when I was young helping my father in his TV shop. We would go out on a call for bad TV reception from the antenna we had previously installed. The problem was the excess antenna lead in wire neatly coiled hanging on the back of the TV. Uncoil the wire and the picture would clear up. As Mofimadness said, coiling the wire will create inductance, and affect the signal.

Thank you all for your feedback, no pun intended. Am about to install new power cable and a couple of interconnect upgrades. Will try to follow your suggestions and live wit a hopefully reduced tangle.