I really don't think desdgl has to worry about this in the speakers he is considering. But a good point, I thought about that and forgot to mention it. Foam surrounds will rot in maybe four or five years, if not sooner, and you will have to replace or recone your speakers. I've had this happen in the past myself. Surrounds should be made of butyl rubber, which is very flexible and I guess will last forever. By the way, this JBL system is what I plan on getting, for my home theater system. And if you believe that, I'll make you a good price on the Golden Gate Bridge. HeHe. Look at the price, $109,100. For that price you get nine speakers, four subwoofers, and ten amps. Looks like a deal to me, in my dreams. Wonder if NewEgg carries these at a discount? But we're getting off subject of this thread, oh well.