sporttruckin

Great article. thanks for posting

TimelessR1

Yeah...Tom Nousaine was great pioneer in car audio....i remember that article in Car Stereo Review

rlmxracer

The polyfil "trick" was developed for sealed boxes. In a ported box it usually works it self into the port blocking it.

sporttruckin

So someone check my thinking please.....

If i have a sealed box with .35 cubicft airspace and i add polyfill to the box (30% increase based off the article) that would give me a increase of .1 cubicft airspace. thus giving me a total of .45 cubicft airspace.

TimelessR1

your logic is correct...but do you know how much poly fill will give you that? b/c the article also states its anywhere from 1-1.75lbs ber cubic foot. You are better off making the box the right size per the speaker manufacturer, and jsut tweaking with the poly fill.

sporttruckin

i would love to make the box the right size but i cant find enough room behind the back seat to do so!

TimelessR1

Thats where fiberglass comes into play! I'd do a little research on some Fiberglass forums...and you'll def be able to find the room your looking for...and then tune it with the polyfill

sporttruckin

I don't have much experience with fiberglass. not sure i want to take on that challenge.

TimelessR1

Its actually not that hard!....If you look through some of the work these guys have done, it give you an idea of whats possible, and opens up a whole new relm of mobile audio.

http://www.fiberglassforums.com/