Good Morning I've been in and out of the HTF several times. I've read some awesome ideas on building the HT. Finally registered today cause I have a question. DOH! I want my ceiling to be a drop ceiling for several reasons. 1. It's in the basement and I want to be able to get to the plumbing easily in case there is ever a problem. 2. We all know the advancements in technology it only takes about one year for something to be obsolete. So upgrades are inevitable. So I have standard floor truss over my theater. Any ideas on what materials to use to soundproof above the tiles.. Any Help is appreciated.