I had the day off today and decided to try poly . I wrapped them like I have seen on this forum. I have to say they sound better . I was not sure if I believed in this stuff. I am glad I gave it a try.They have more bass and sound full.
I've removed and replaced my polyfil several times with anywhere from one to three layers. Currently I have two layers. I'll probably go back to three layers before long. I have to say that although it is hard to make a really good comparison before / after I do believe it helps the bass.