Did the searching, now the drop ceiling question
I did a bunch a searches on GS today and I'm now posting some questions for clarification. This quote caught my eye.
if it's a drop ceiling..just replace some inserts with grates and the air space between the drop and ceiling will be a great trap.
This caught my attention as I have a low (7ft) drop ceiling filled with the standard hard tiles. Each grate has 2 tiles stacked in it for more mass and pink fluffy above into the joists. After reading this I wondered if this indeed would be a good idea as I had never seen it discussed before when talking about drop ceiling issues. I would think you would have to add a piece of thin poster baord above the grate to keep dust and insulation from coming into the studio. Would the poster board add to much reflectance for such a small ceiling. These grates would only be for the rear 9x4 section of the ceiling as I already have a 4x4 cloud above mixpoint. Assuming this is a good idea, how many squares in that 9x4 rear ceiling should be replaced with grates.
My room dimensions are 12x9x7 and the room has 22 traps already, so it is well treated.