I own a JBL S120PII, I've had it for like 8 months. I have noticed that it has started to rattle pretty badly, specifically the port is rattling becasue when I stick my hand in it and press down it stops almost all the rattling. Is there anyway to stop this rattling myself?

Heres a link to the sub just in case:



http://www.audioreview.com/cat/speak...1_2741crx.aspx