Originally posted by illusion
Well I'm not certified any more, but unless physics has changed since I was an MECP master installer, polyfill is not just a dampener, the cavities and facets of the polyfill do increase the apparent volume of an enclosure. Try a search on yahoo, do "subwoofer polyfill increase" see what comes up. Before you argue at least absolutely positively know what you are talking about. I'm not guessing at my answers. If needbe I'll see if I can dig up some old acoustics books I have. If polyfill is solely a dampener, then why do you get a increase in SPL(as much as 10db sometimes more), aside from the fact that it decreases standing waves?

wned: :thumbup: :thumbup: I could not help it...all in fun