Here are some pics showing both sides of the Xovers out of my pair of LSTs. the lighter colored one is the older version. The newer one is out of LST serial number 59. THe paper is missing on the other so I don't have a reference as to when the change took place. The old one had 5000uF worth of caps for the transformer "filter," the newer one used 2500uF. I'm replacing them both with 2500uF. There are no prizes for finding the differences in the circuitry!