Hello! I am trying to figure out what is wrong with my tweeter. There is a pot to adjust the tweeter level and then it started to scratch more and more. I had to turn it up and down to find a spot that the tweeter was actually working. Then it just stopped working. It was obvious to me that it was just a broken pot, so I replaced it. However, the tweeter is still not working. What could that be? Could the broken pot break something else? I guess there is a crossover in there since it is a 3-way speaker? Could it be broken? Should I replace the tweeter itself?