Hello I just got a samsung surround sound hooked it all up sounds great BUT!! When i connected audio in and out from samsung receiver to comcast hd cable box the sound is there but i hear feedback from the front speakers. My brother said to try to turning up the cable box to let full flow thru but there is no volume on the box can anyone give me some info to a solution Thanks JIm ??????????}
Are you using HDMI cables? The volume for some cable boxes does not work once you hook up HDMI cables to it. I'm not a Comcast customer nor have I ever seen there box is there a volume anywhere, on the remote possibly. Are you sure you have the red audio in the red audio and not the red video out.