Denon AVR-X3800H - I've got a second receiver connected to the Zone 2 pre-out connectors, but I cannot get any sound. If I connect to the Height 2, I can get sound, but I cannot get the other receiver to get sound. I'd like to connect two sets of speakers so, this is the only way I can think to make it work. Any advice on how to get that set up. I looked through a lot of posts and the worthless Denon manual without finding a solution.\n\nThanks in advance.