Reply to Link 2 Seismic Audio PWS-10 Speakers

I'm not sure if this is the right place but I cant find help nowhere else. I want to buy a system from Seismic Audio for small gigs. I am interested in getting a pair of PWS-10 speakers the problem is that I noticed it has a speakon output but no speakon input......how could I link these together? Thanks for your help.