I am putting a HT in my basement and am planning on mounting my surround speakers and wall sconces to rectangular columns along the side of the room. I would like to run some sort of inexpensive conduit to them so that I can change the speaker wire later if I need to. I've attached a floor plan and a rendering of what it will look like if that helps. Here is the question... Fire code requires that I fireblock between any concealed vertical space and an concealed horizontal (ceiling) space and seal with fire caulk anything that penetrates that fireblock. The 2x4 top plate or 1/2" sheet rock qualifies as a fireblock but what do I do about the conduit? Do I have to install an electrical box for the speaker and hard mount the conduit into that? That would men using metal boxes and metal conduit! YUCK! Note: The same issue would apply to speakers on the walls if you try to run the conduit into the ceiling. Normal PVC water/sewer pipe is legal but I suppose that is because the ends are never open as would be needed for a wire conduit. Any opinions/ideas?