Because my windows have been rattling I have to keep turning my sub down until now it is virtually off! I'm looking for some cheap solutions to stop my windows rattling so that I can turn up my subwoofer. Can anybody help offer some ideas/ solutions? I'm currently looking at the idea of trying to find some fire retardant foam (possibly an inch or two thick) that I can put in place when I'm using my system, then taken down to open the windows. could this work? money is extremely tight so please bare that in mind.