Is it ok for polyfill to be touching the speaker, or does there need to be some kind of space between them? Im gonna be putting in my mid bass's this weekend and was told in a previous post that putting some polyfill in the sail panel area, both above and below would be a good idea, so I plan on trying it out. Just wondering about how much I should use and if its ok for it to be touching, because of the area above the speaker. Thanks

 

Keep it away from the speaker. You don't want anything touching the speaker but air. Personally I think PF is a waste of money. I've built plenty of home speaker systems over the years and did lots of comparisons with and without it and it never made an audible difference to my ears. It's cheap so you've got nothing to lose by trying it.

 

polyfill makes the sound waves bounce off slower making the speaker or subwoofer feel as if it were in a larger area. i dont know what kind of a difference it would make on a speaker but i use it for my subs and i think it gives a tighter/cleaner bass sound

 

home theatre is not even the same ballpark as car audio.

polyfill makes a small difference but barely noticable to the untrained ear.
you want to fluff the polyfill out so it absorbs the most sound waves and no it does not matter if it touches the back of the speaker.. just dont use too much you dont want it to resist the speakers movements.. just enough to absorb some sound waves.

 

No, home theatre is not the same as car audio. I never said it was. But using PF inside an enclosure or the wall of your car is still the same thing.

PF is not used to absorb anything. The fibers of the PF make the sound waves inside an enclosure travel slightly farther than they would have if the enclosure were empty. This is how PF "tricks" the woofer into thinking the enclosure is larger than it actually is.

Since the walls inside our cars are not sealed like a speaker enclosure I don't see how using PF would be of any benefit.

 

oh ok i thought he was sayin in a sub box...

LS1 is right it wouldnt do much on a speaker