http://www.hometheaterhifi.com/volum...ma-4-2004.html Sounds interesting and I have a joist floor in my home theater that definitely resonates. I even have some spare Auralex panels. Could one simply make a similar base with the 2" foam? The item reviewed uses a denser foam rated up to 300lbs of load but my single SVS CS is a meagre 50lbs. Does this sound like something worth doing?