Hi, I'm a beginner here on the forum and I don't know if I'm posting in the right section. I have a SONY STR-DE897 with 7.1 speakers and there are 2 speakers output not being used (FRONT B). My living room is right besides where I want to put some wireless speakers, 17yards straight away from the receiver, without walls on the way, just a glass door. Is it possible to setup this with my receiver? Or I need to buy a new one? Or perhaps some sort of a wireless adapter(I don't know if this exist)? Thanks.