I called a local/popular A/V store that is supposed to specialize in higher end audio.. anyways, I asked a few questions as I have Def Tech speakers that have powered subs in them. They suggested that if i get an external sub (which i'm going to) that I should basically daisy chain the external sub with the lfe inputs on my front speakers (pb7002s)... somehow this didn't sound right, but am wondering what your thoughts are?