Thanks to everyone for the help getting my HT off and running. Amp is set, Z4 is callibrated, Carada screen is hung, and then......the Scientific Atlanta 8300 HD box is the wrench. I hooked up the box via optical for audio and comp for video. This is when the ground hum starts when the comp video is hooked up to my amp. If I just have the optical in there is no hum, only when the comp portion is added. I was going to run HDMI direct to the Z4 (bypassing the amp). Anyone have another sugestion? Thanks Chris
