I've noticed lately that my Shure condensor mic is crackling, popping, and offering up a metallic static as the result of sharper vocals, IE words that begin with the letter F. Sorry, I can't remember the model I have, something like SCM 1000 or 2000, it was $299.99 about 3 years ago. Any suggestions on how to mitigate this would be great. I've lowered my highs, mid, and lows, and of course, it's not solving the problem.