So then I treated the surrounds to damp the excess vibration. Looking at paper cones with accordion surrounds, the surrounds have a tacky, tar-like substance that stays sticky for a long time. I looked around and found Aleen's Stretchable-Flexible Fabric glue. It seems to retain it's tackiness for a few months now anyway--Ha ha. I also thought that since it was designed to remain flexible for a long, long time. Well check out the results.