Never owning a sub before I need some help! I was looking at a pic of the back of the SVS pc-plus subs. I noticed that it looked like you could hook up regular speaker wire or a sub cable (RCA). Am I correct, If so which is the better way to go? and do you need two of them? I did not know a sub had a left and right connection LOL I'm prewiring now and need to know what to put in the walls Thanks in advance for putting up with a noobie!