anyone else ever have problems with distorted and overdriven speakers through the ampeg? i experienced this problem before with my previous head through my 810 but it was just a volume thing with the bass..but i just picked up the 410HLF and put my new fusion 550 through it and it immediately started doing it at high volume, havent tried it through the 810 yet..my bass is active anyone have any insight at all? maybe using a different speaker input something i would appreciate..