How to set up dual z623 2.1 Logitech Speakers?

I recently decided I want more power output from my speakers and considered buying a whole new set up but then I realized I could just simply purchase a second set of z623 Speaker System and set them up together. Any ideas how?

You mean buying something like this? http://www.amazon.com/3-5mm-Stereo-splitter-Adapter-Female/dp/B004D0LTL2 

I think that would work? I'd plug that one into my audio port on laptop/phone and the two stero systems to that??

 

Yes, make sure to look for a better one than this one. This was only an example.

Sweet, I'll give it a try. Thanks!!!