Just an update on the insulation bass traps:

I am still experimenting with sub placement and this week I placed my sub in the RF corner. I like it here but I had a dip from about 80hz to 100hz of about 10db. I tried adjusting the phase etc. to no avail. Still an ugly dip...SO......

I got a couple of rolls of Owens Corning R-13 and stuffed them in the FL corner of the room just to see if it would have any effect at all. Well to my surprise, it almost entirely flattened out the dip and brought it up almost the whole 10 db. I was amazed!! Cool trick.