I read in another posting that it can be detrimental to your system to have some of your speakers set to "small" and some set to "large." I understand that setting your fronts to "small" frees up some of your amp's power (by letting the amp in your sub handle the low frequencies), but what about the frequencies that fall in between the range that the fronts handle and the low frequency range that the sub handles? I'm REALLY trying to understand this! Here's my set up...presently, I've got two front towers (freq. range 35hz to 22khz) set to large and the rest of the speakers in my system set to small. I've also got a powered, 250 watt JBL PB12 sub. By setting the fronts to "large," am I causing undue harm to my system???