Have Sony wifi bluray player and just purchased surroundbar 3000 -getting sub feedback - have read some issues with surroundbar and wireless players (ie nextflix) not working while surroundbar is on. Mine works however, I get some cracking noise coming from bar every so often and then big problem is that I will get sub feedback and will continue even after turning off movie, music, etc. Feedback will stop once turn off sound bar. Is cracking and feedback because of the router???