I have two EP 175 subs and would like to add a third sub I have just to see how it works. What do I need to buy to run a wire from one of the 175s to this third sub?
Thanks
Ron

It is probably easiest to get an RCA Y-cable, and spit the sub cable where ever it ends nearest to the location of the new sub.

You don't have to use the ins and outs of the subs. They're just Y internally anyway, so it isn't actually a daisy chain.

Just run a coax from the RCA out to your other sub's RCA in.