Originally Posted by Glenn Kuras
It really would not be "sealed" and you only make something "sealed" when doing pressure based traps (tuned trapping), which is not really going to work in a shelf like that. For what you are doing I would fill the whole area.
Would you use a less dense filler ie loft insulation R30 for the shelf space?
Also I'm tempted to try to fill under the timber floor which is planked with 5 1/4in x 3/4in hardwood which has approx 3/8in gaps. The subfloor depth is between 8 and 11ins. The floor is old and has slight bounce and air can freely flow through the gaps. I am guessing that by varying the area of floor covered (mats) I might get some bass control.
- Hope this isn't hi-jacking my own thread