Hi, I set my 750 up using the automatic microphone thing that comes with it. I have Orb satellites and a BK XLS200. A few day later when I was browsing through the settings I saw that the sub crossover was set at 160 Khz. I thought the crosssover point would be about 110-120 Khz. I have the sub turned up to maximum crossover (without switching to LFE). Is the amp right? Or should I manually adjust the corssover on the amp dwnwards? The amp is set to 'small' speakers up front? Thanks for any advice.