I never had a subwoofer in my home theater before now. The one I just bought has a pair of speaker in and speaker out jacks. Should I be running speakers to it? And what's the purpose/advantage(?) of this over just running them to the receiver? I also just bought all new fronts, rears, and a new center channel. I haven't taken the time to calibrate it all yet, but I have been fooling with it just to check out how different settings sound. One problem I seem to be having is how the sub and speakers work with each other. For example, when I set the fronts on the receiver to "small", it's apparent where the bass is coming from, which is definitely the sub, but when I set them to "large", the bass sounds more naturally blended in but it's not as deep it seems. Would buying a calibration dvd help remedy this problem(and probably more I have and don't realize)? I'm really lost here and all I want to do is enjoy my new HT.