I found some old speakers in my parent's with red and black clips labeled plus and minus on the back. I don't have much experience with these except for my logitech z5500 system. I know they take speaker wires but I don't know how to set it up so I can play music from my iphone using them. My z5500 connects all the satellite speakers to the subwoofer via speaker wire and the same plug for power and signal. But I only have these old speakers by themselves and no reciever or anything to drive them. I want to make use of them but don't really want to shell out too much money.