I need some speaker help

Addendum: Yes- The alternative is a much more efficient speaker system. But at 92db/1w/1m the DT 7002's are already fairly high efficiency. How big is your listening room? With 200wpc and 92db efficiency you should able to generate some fairly high SPLs.

I agree with the first two posters. From the damage you are sustaining, it sounds like you are clipping your amp and need more (clean) power. Amplifier clipping will take out tweeters(and/or x-over caps) regardless of the brand/quality of the speaker system.

Mr S- I've been in the sound reinforcement business for almost 30 years and never has seen a speaker system or horn design that varies it's tweeter's response with relation to it's SPL. What company or companies build such a system or crossover? I'm assuming it would also have to vary the midrange so as not to leave a gap in the system's response as it's output increased? I'm truly intrigued. You use the term "waveguide" which is a horn/throat design intended to smooth the frequency response of a horn across it's entire dispersion range, and has nothing at all to do with the driver's crossover frequency or it's diaphragm's excursion. IE: (http://aa.peavey.com/downloads/pdf/qwp1.pdf)