I was adjusting the eq frequency in the low end range (less than 60hz)when the frequency got down to around 20hz.At that point a loud screeching was heard from my right side speakers.Now it appears that the tweeter doesnt work. I think its toast.The volume was not very loud.Does this make any sense ?Any known issues with this situation?I did a search for equaliser on the FAQ but didnt find anything related. Should I post this somewhere else?