Hey guys, so this is my first post here and I think might have a real challenge for ya! So here is the deal I have a pieced together stereo that consists of a brand new Denon AVR-s700w, 4 JBL component speakers, a 12 inch klipsch, and a 850w QSC amp (I dont know if it is important information but all the speakers are out of an old movie theater). I previously had this exact same set up on a cheapo Panasonic head unit and it sounded amazing until i burnt up the head unit. So I bought this Denon because I was told the reason my old one burnt up was because the stereo amped the sub signal and I added an amp on top of that... so I bought the Denon because I was told it is for a powered sub. Anyways, I hooked it all up and the sub is humming, you can faintly hear what should be playing but its mainly humming. So I did some research and read up on the ground loop problems so I bought the 3 prong to 2 prong adapter (I know its not the right way to solve it, i just wanted to see if it would fix the problem) and that didn't work. I tried changing the outlet it was plugged into, no dice. I have double and triple checked all the connections, and all the wire and there is nothing that I can tell is wrong. Any advice you could give me would be much appreciated!
