Hi,
We just move in a new house. They have four mounted ceiling speakers. There are 8 white RCA jacks on the wall. There is a A/B selector button next to those RCE jacks. On another wall, there are a A/B speaker hook ups switch. I tried to hook up those RCA jacks my Sony 5.1 dolby Receiver but there were no sound or power from those speakers. I checked the breaker box and everything is ok. Any suggestion? Please help.