I tried running small, but the 80hz crossover on the denon 3801 wasn't nice AT ALL. It was very abrupt and unpleasant. Therefore I have my front speakers set to large and my sub crossed over at about 50hz. The front speakers are still producing the LFE (RF3's) and the paradigm servo 15 is providing backup from 50hz and below. When I run a frequency sweep the crossover is smoooooooooooooooooooooooooth. I just couldn't get any sort of blending worth talking about when using the small setting.