I have searched around on how to fix a buzzing tweeter but could not find it. Maybe I did a bad search but if you can help me. When I turn up the volume of my amp up I get a very high pitched sound coming from the tweeter, and when I turn the tweeter up more it worsens. I turned it down so it doens't become anooying but I'd like to use my tweeter again. I have an SWR Workingman 210. Is there any way I can replace the tweeter with another or is it just no use?