Dunlavy SC IV A harsh high frequency


I have owned my SC IVA for many years. I replace the blown tweeters at least once a year. I know the original set were carefully matched at the factory but I can not duplicate the tecniques which John used in his shop to optimize response. The speakers sound glassy and I wonder if this is as a result of tweeters I have installed but would have been rejected by John. I have done a lot of work with room treatment,changing source, components, etc...
Are there any recommendations for fixing this issue?
Replace the Vifa tweeters with more expensive ones?
Thanks
128x128shumi
I have blown my woofers through a DC pulse, but never heard of blowing tweeters. Something must be sending a high frequency burst or you have an intermittent short, but I doubt that. You might want to post a question about how your tweeters could be blowing here on Audiogon and get feedback from more than Dunlavy fans.