hifi engine

Manual for Realistic MPA-80 PA

Looking for the manual or help for a Realistic MPA-80 PA unit. Have found several for other newer models that have a different back panel config than mine. Mine has 1 standard single block red/black speaker out as well as 2 1/4" mono plugs. Looking to determine how to hook up 2 8 ohm speakers safely and correctly. I realize its a PA and the output will be mono. (I think). Thanks!