I was just wondering was does adding polyfill to your speakers do for you and how is it done. I have the front fairing off because i just added the aux connection mod to my radio (works awesome) and thought I might do this polyfill thing.

 

Check out the audio forum. A lot of info on this topic there.

 

Polyfill "tricks" the speaker into thinking it has more available airspace by slowing down the sound wave. Is helps with bass response, mostly. Buy the rolled polyfill, cut it into squares large enough to wrap it around the back of the speaker, and use multiple layers. You can hold it on with rubber bands, or some people layer it thick enough that the outer fairing holds it in place.

 

just take an old polyfilled pillow cut it open and take some of the stuffing out and put it behind your speakers. works very well, you don't have to pack it in there real tight just stuff it in there loosely. really tightens up the sound.