These "all in one" systems don't work unless they are compleatly hookes up. What that means is you would need to trick the sub into thinking the satelites are hooked up to it. It's called a "dummy load". http://en.wikipedia.org/wiki/Dummy_load

The cables are just 1/8th" TRS https://www.cablesforless.com/p-1121-6-foot-35mm-mm-audio-cable.aspx

Does anyone know the power rating of the 8" loads in the Ultra sub?