I have a Rx-V3000 After a year, i am still somewhat confused as to the whole "main/sub/both" setting in the menu system and could use some info /clarification. Here is my take : MAIN: ALL Bass and .1 LFE information is send to the main channels. This is used when you either have no sub, or use your subs filter (runs mains from receiver to sub 1st and then to speakers) Sub: ALL bass and .1LFE information is sent to the sub. Both: Bass and .1 Info is sent to both main speakers and subwoofer I DONT use main, so i am still torn between BOTH and SUB. When i am playing music or regular DSS shows there doesnt seem to be anything coming out of the sub in the "sub" position. It seems better in the both position. When i am playing a 5.1 (6.1) movie, there seems to be too much bass in the "both" setting and just right in the "sub " setting. While i know which settings seems to be right for me, I like to know WHY they are like they are. Can anyone explain in more detail than the owners manual what happens in the 3 different settings and which ones they use for which sources?