Hi All, I’m currently thinking of adding a home theatre system (AV receiver and 5.1 speaker set) to the existing living room and below is the layout of the room. Hiding the speaker wires is the main request from my wife and what got me concerned about my layout is the outside wall (possible insulation/fireblock) for the future rear speakers and the front wall is behind the washer/dryer room (possible water pipes). I have a crawlspace below this living room and wondering if this is the ultimate solution to hide the speaker wire by fishing the wire down the crawlspace for both front and rear speakers. I'm assuming that some of you have done this before and It would be nice if you can share the experience like challenges/success stories while doing it. Any concerns, suggestions or opinions will be highly appreciated. Thanks, pdxsound