Hi all, I have jbl nsp-1's, pb-10 subwoofer, and onkyo tx-dx595 receiver. I currently am connecting the sub via a monster sub cable. the dvd play to the onkyo receiver using a 2 foot lengh using gold seriers rat shack. Should i use cobalt cables or better cables instead of these? or should these be fine. I also have only home depot speaker wire w/out banana plugs on them. Should i upgrade that speaker wire instead? Any comments appreciated P.S please take into consideration the medium end equipment I have and the short runs. The sub is 5 feet away from the receiver.