thanks for the helpful info I am new to the klipsch scene. Had my first encounter at a high school dance where they had a pair of la scalas running and since then I always regarded them as high output monsters,and the guy I Bought from said they were the industrial model very capable of handling high power. I was misled it seems, but boy they sound great. Again thank you and one question I have is that all speakers I have encountered have internal acoustic damping material and these. have none, would be advantages to install some?