This is the worst diagram I've ever seen!!!! And then to see it came from infinity, that just makes it worse! Have any of you guys out there EVER EVER EVER seen a DVC sub with both positives on one side, and the negs on the other? NO! The problem here is some newbie will see this and not look for the + an - so they'll hook up a VC to itself...yeah in other words, DON"T FOLLOW THIS DIAGRAM!