Pure acoustics lord speaker set up help!!!?

Ok so i got this http://www.pure-acoustics.com/design/english/html/lord.htm Now my problem is I do not know what I need to set it up. I know on the back of each speaker there is only a spot for the 2 speaker wires. I also know that it is a powered subwoofer. I got the subwoofer connected directly to the tv and I can hear b i just dont know how to get the other speakers set up. I think I need to buy a receiver or an amplifier but I am not sure which I need. I tried connecting one of the speakers into the speaker out spots on the back of the subwoofer but I did not get any sound. Thanks any help is greatly appreciated.