If you are running two subs, in my case I will be using two Velodyne SC-600 IW's along with the SC-602 Amplifier, should the sub cables be the same length or is that a non-issue if they are under a certain length? I have not ordered them yet so I am asking in advance of making a purchase from Blue Jeans Cable. If the difference in cable length is only a few feet does it make a difference? Is there a point where the difference in length for the runs to two different subs. becomes an issue?