Turns out this was not the manual i was looking for. The concertmate 670 keyboard i have is a "Realistic" model made for Radio Shack and none of the diagrams on the owners manual i received matches up. HOWEVER, I must say the service Owners Manual provides was fast and efficient by being available online. The manual was in good readable condition and easily downloaded.
Connecting the front speakers
Use the supplied red and black speaker cords to connect the front speakers to the main unit. (The S-VS200V speakers come with speaker cord already attached; you only need to connect them to the main unit.) To get the best sound from the system, it�s important that you connect the two strands of speaker cord for each speaker to the correct speaker terminal. The terminals and cords are color-coded to help you match them up. Note: Make sure that the bare speaker wires cannot touch each other, or come into contact with other metal parts once the unit is switched on.
To connect a speaker cord to a terminal: 1 Pull off the protective covers on the ends of each cord, then twist the exposed wire strands together.