Hi. Bare with me, this is my first post and i'm novice. I'm trying to help my brother with his audio set up. He's going to have his main HT, then a seperate receiver for celing/background music speakers all over the house. He doesn't want to spend too much money on the receiver, but wants to have reasonable quality running to 18 speakers. I was planning on using a bunch of speaker switches to work this number of speakers. I've tried searching, but haven't found anything. what receiver (and/or setup) would be good to do this task?