I am very close to purchasing my Polk setup with RTi70s for fronts, fxi30s for rears and either a csi30 or csi40 for the center.
My question is, I'm having some in-wall shelving put in along with having my Sony Wega flush-mounted above my fireplace. I was planning on also installing the center channel above the tv and set into the wall. I was at a local hifi store and the sales guy said that would be a bad idea because the speakers were not meant to be installed in a wall. He said it would it could end up sounding hollow.
I know there are a lot of experts (or at least folks who've looked at this kind of thing before) here so I am in need of a second opinion. Am I ok to set the center speaker into the wall, or should I mount it externally?