The other home depot had cables. I have 120' of 12 gauge and 100' of RG6. The RG6 has no ends on it, which I can leave that way for now, but I'll need some more input on how to turn these into something I can plug into the sub. Do they go directly into the wall plate without anything on the end and then the other side of the wall plate has a normal sub connector that runs a short sub cable from the wall to the sub?

I may take my current 25' sub cable and try to run that, but I don't think it will reach.