Yeah I don't know if I want to chance it either. However Dynomat is anything but a gimmicky product. I have used it to great effect for years (close to two decades) in car installations. It does do what it says it does (deadens the sound field). My only real concern is, do I want to deaden the sound field inside the EP800 or not? This I don't really know. They do put some damping material inside the box as it is. So they do apply this technique to a degree.

My question hinges on if they have 'just enough' damping employed, or if it's just as far as they wanted to take it?

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD