A big hello to all from Australia,
I have been having little success finding info on polk subs and boxes over here as they are only starting to flow into our popular market.
I am building some boxes for my 2 db1040svc subs (2 single boxes). I am using 1 inch mdf and have got my internal box volume to almost exactly what it specifies on the polk box plan page. A side question here is I assume that the volume of .66cu. ft. or 18.69L is the internal volume once the woofer is in place, ie. total box volume - volume of the woofer cone/magnet takes up?
I am going to talk in litres here for a little bit (sorry). Because when you work out the straight volume off the dimensions on the polk site for the db1040 sealed box using 19mm mdf it is 23.76L which must be 18.69 once you take woofer volume away? I have got the dimensions of my box to equal 23.56L so pretty much the same.
Now to my main question. On the polk site it states "minimal polyfil" on the box design page for this particular box. How much does this mean? How much should I put in? should it sit loose in the bottom of glued to the back and sides? Has anyone else built these particular boxes did you use it did it make a difference.
I don't particually want to be taking the woofer in and out heaps of times seeing if the polyfil makes a difference. Hopefully someone here can shed some light on the issue.
Thanks in Advance