LOL the first link I posted was to a YouTube video walking you thru the process. But basically you just cut the cone out leaving the dust cap. Push it in, mix some epoxy in it, rest a bolt in the epoxy. Place a flexible brace across the top with the bolt thru the middle then attach that bolt to your chair somehow. Most of the process was really simple, I spent the most time trying to fit the bass shakers under my chair.