Thanks for the input while turning down the sub volume on the receiver prevents the issues of droning and that "helicopter effect", it also prevents me from getting any thump from the sub! I did a test and at the level i have to keep it (sub volume on the receiver at +2), I get WAY, WAY more thump from the m80s! that isn't normal, I know this because others are in awe of their 800.
I'm beginning to wonder if there's an issue with the sub out on the receiver...but with the last 800 i tried it on onkyo and 800 blew (smoke coming out of the back)... I'm at a loss here.
