They're speakers. As long as you don't have a crappy receiver which requires the special plugs, you can use these. Otherwise you're limited to the 26 gauge crap-wires that they come with.
I already bought a 5 speaker set and was wondering if its sorta pointless to add another 2 front speakers, that's all
I am still learning about this stuff but did manage to hook up my speakers to receiver this past week