Asking this question here is like asking a neurosurgeon for help with a head cold. But I’m here; you’re here, what the heck. I just got a very basic, very simple HT setup. Your basic $200 entry level deal. Simple, but I can’t begin to tell you how much better it is than stereo speakers. Scared the crap out of my nephew with a demo of Jurassic Park III. My sub can be adjusted + or – 10 db. That’s my question. What am I adjusting? I find it very amusing when the floor vibrates, if that helps. I use this mainly for DVDs, and they are almost all action adventure blowing stuff up DVDs.