So I have a Marantz sr5009 powering the Polk rtia9's and a csia6 as my center. I also have a Klipsch sub 12. Now every time I power on my receiver I hear static from the center and it gets louder and louder until it pops and both woofers flex out and then everything is fine. The sub does the exact same thing but without the static, it just flexes out and makes a loud noise. I know its not supposed to happen and I want to make sure it's not going to break it and hopefully fix the problem. Thanks