Thanks Gonk. Your answers to my 3 questions is how that I thought it worked. I plan on using 3 electronic crossovers to add a subwoofer to each of my 3 front channels and will set them to large. I will also add a 4th subwoofer for the .1 channel to reproduce that information. My surround channels will be set to small and that information should go to the .1 channel. I now have to build the room for all of this stuff.