Alright, I pretty much understand that with sealed boxes stuffing with damping material is a good thing. But I've heard people say not to do it with vented, and others say to do it. Is it good or isn't it? I know lining the walls of a vented is good, but is filling with fiberglass or wool good? My dad hast an old pair of Sansui SP-5500X speakers which are ported and do appear to be stuffed with wool, so I'm not sure. Just hoping someone can set me straight o nthis one, thanks.