Bought Energy take 5 speakers with Sony STR DN 1030 av receiver with Polk sub woofer. I installed everything, but sound does not come out of the rear Energy take speakers. Is there something that I missed. I tried going to GUI mode on SONY and setting up speaker configuration. The front , center and sub woofer work great. I am a novice when it comes to audio, home theater set up and this is my first time trying something like this.