If you are up to the task, you might try swapping the tweeters in your 802Ds.
"The tweeter shows an open on the ohmmeter. I'm not sure why it blew, I don't listen super loud. I'm running 500W from Wyred4sound amp."
The Diamond diaphram of these tweeters are physically very, very fragile. Just touching one can easily break it. The dealer here in town has had a couple broken by people taking off the "metal grill" and barely touching the element. So power or distortion might not be the culprit.