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Technics EH-760 how to connect non original speakers

I just got a very nice Technics set, the EH-760.
But this set seems to use a speakerset with separate inputs for LOW, MEDIUM and HIGH.
There are 2x 3 outputs for speakers.
Further connection for Subwoofer and surround left and right.
But there were no speakers.
Can I, and if yes, how can I connect these three separate speakers outputs via a RC bridge or so to a single speakercable.
Another thing could be to have an appropriate speaker were I disconnect the internal filter and use again three connection cables to each single speaker.
Can somebody draw a good working RC filter to put htese three singles together.