dbx Soundfield Ten


May I interrupt the high end conversations for a moment. I need to go back in time to 1976....
I'm looking for the x-over schematic or wiring diagram to the dbx soundfield ten speakers. The inward facing and outward facing mids are wired in reverse from each other, according to the markings on the x-over board. I like to verify that it is correct. Thanks
calman46