I just picked up a used Outlaw 950 with the outlaw 755 amp. I ike it but I can only get my subwoofer to play when its on 5 or 7 chanell stereo. I have tried to Google the issue but all I can find is talk of the bass management system. I have swichted subs, outputs, gone through all the menu items and can not figure this one out. When I set DB levels the sub works as well, so I know it is getting a signal and works, but any type of dolby or surround setting it no longer works. anyone have some ideas for me? Thanks.