i was wondering if i could still get good surround through old pro logic using prologic two and such, it has all the speakers, center, back left, back right, left, right. when i activate it, unless there is no volume, the back speakers and center ones hum, it is loud and annoying, because some games do have a signal to the back speakers with it on and i think they are pro logic two, but i'm not sure, i have the sound running in through AUX, does that do that? the dvd sound option also hums, how do I eleiminate the hum?!?! if you could refer me to a page that has the answers or give them your self i would be very grateful.