I have just purchased an Onkyo HTS-760. I am having a really good time with it. There are so many questions, I will try to keep my posts to one question each. I have an old Radio Shack DVD cleaner. It is a DVD with some very small brushes (which I don't ever plan on using) and some audio and video tests. One of which is the subwoffer crossover frequency test. When I run this test, the subwoffer engages (turns on) at the appropriate time, but the front speakers do not disengage (off). Is that what is supposed to happen? If so, when do the other speakers stop trying to play the low frequency sound? I have it set for 80Hz right now. Which suits me just fine, but I change it for different movies and moods. I would like to avoid driving my front speakers inappropriately. Thanks. If this question is in the wrong place, or has been addressed before please let me know. I did run a search, but didn't come up with anything on this subject.