the back row is on a riser, I assume one unit would attach to the riser to rattle the back row. I just installed Dricor subflooring which is a floating subfloor to let the basement concrete breath and evaporate any moisture. It is a toungue and groove system, figured that the 2nd buttkicker could be installed to the flooring behind the front row. I've hear people say their sub performance dramatically improved once installing Dricor, versus over concrete and carpet.
Can you describe the Dricor a bit for me? It sounds like just what I need but the manufacturer's web sight doesn't say a much except a 1 paragraph blurb and the picture looks basically like a square of foam with a pattern inlaid into it.
