First let me start off by giving you my setup.
Fronts: 2x Polk Monitor 30's
Center: Polk CS1
Surrounds: 2x Polk Monitor 30's
The issue I'm having is a crackling or popping sound coming mainly from the center channel(Polk CS1), when there are high screeching sounds or really deep low sounds as well. For instance, on the Game of Thrones premier, when the dragons were flying around screeching, and diving into the water, it was very noticeable. Even when I turn the receiver way down to almost minimum, the crackling is still there. The front speakers seem to do it as well, just not as much. The surrounds, however, do not seem to do it. Any help or advice would be great.
Thanks for your time!