I hope this is the correct forum for this.... Has anyone ever connected their receiver to a NuTone intercom? I have an Onkyo 797 and a NuTone IM4003 whole house intercom I'd like to connect. The NuTone site says it can accept external input but there aren't any details. I'm assuming it would be an RCA connect, but for the life of me I can't figure out where I'd get an RCA long enough to run from my reciever to the NuTone unit. Any advice or experience would be mucho appreciated.