I have a CRT RPTV (Sony KP-57WS520) and I'm getting a new center channel (Infinity Beta C360) which is 30 pounds which will sit on top of the set. Circuit City sells a center channel support which I think will do a good job of mounting it on the top of the set. However, a speaker this strong will produce more bass. In addition, I'm looking at buy a bigger, more powerful subwoofer. How concerned should I be about too much vibration from my new sound system? This just occured to me the other day as I don't want to knock out things like focus and convergence over time. Is this something I should be concerned about?