They must be 3 years old then. I know they were in the store for a long time ,because I kept goin g in every 6 months or so. Could never seem to get enough $$$ til this year.
I have the vibration fixed it was the woofer I took it out then re seated the woofer and screwed it back in. If you listen closly thought you can hear a slight vibration. Try playing Blow at high dough from The Tragically Hip, just the first part with the bass. It is a constant frequency that vibrates it and only this song so far. Do not try it with a MP3 as the frequecies are cut out of the mp3 crap. get on your knees and listen. And also there is a rubber gasket already on the metal casing of the woofers but it is not very thick