So in our newly finish HT Room the floor is engineer hard wood on a product called one step which is about a 1/2 inch thick that provides a thermal break as well as a vapor barrier on a concrete floor. As well if water does start coming into the basement it can flow under this product as it is dimpled. I shouldn't have a issue with water hopefully we have owned this home for 12 years and never had a drop of water
I've read that's this is not ideal for a down firing sub although it sounds fine to me.
I was thinking of placing it on it side with one inch rubber pads that I have.
Have anyone tried this and if so what were the results good or bad.