Took about a week to finish the walls. I did some research and commercially sold soundproofing panels are way too expensive and didn't have the look I wanted. I made the panels using a think particle board with a thick layer of soundproofing foam. The cover originally I had planned to use non-uniform gray color fabric but I just couldn't find any place that had the right looking fabric or even enough to make all the panels. I ended up going with a thin type carpeting which I cut them to size and stapled to each panel. I criss-crossed the patterns when I installed the panels, though in the pictures they don't show but up close it adds a nice little detail to the room. The panels definitely do a great job, I can't hear anything on the main floor, even right above the home theater room. I do still have to play with the sub a bit, and maybe get some tall metal feet for it, cause it's very powerful and the tremors from it can be felt very far away.