Delta_Kilo

I realize I'm resurrecting an old thread here. I have a pair of KSP-300's that I am using in a 2ch set up. I absolutely love them. I noticed a hum developing and took to the internet to see if I could find the repair manual. I ended up writing Klipsch and was told that they don't "have that information available". I'm not entirely sure what that means. Perhaps, they are tired of supporting speakers that aren't in their current catalog. But, I digress. So, after searching Ebay and really everywhere else, I can't find a schematic for this series. I've found the threads that are linked in this post, as well as others, are no longer valid. If anyway could help point me in a direction, it would be greatly appreciated.