After reading posts about insulation I noticed a lot of you folks say it is quieter. Now some of you know I am hearing challenged so I have a question. I will be insulating with styrofoam with foil and plywood. How many db's do you think you bring down with this kind of insulation? 5 ,10? Im only asking because I have strange hearing LOL Some things sound loud to me and then not to other people. The radio can be on at a "normal" volume but sounds loud to me and low to other people.