played my first gig with my new behringer bx 6000 and acoustic bass last nite. not sure if it was the amp, the room, or the setting, but i got some nasty damn feedback - AND THIS HAS TO BE STOPPED!!! anything that can be done to alleviate feedback from an acoustic bass. i know the simple solutions - turn the amp away from myself, move further away - etc. do they have baffles or something like i was told they make for acoustic guitars???? if so, could you provide a link? are there any other solutions? also - my E sting is deader than the rest of em. the others have punch, E string, nada. is there anything that can be done in order to get a better string to string balance out of the piezo? if all the strings are the same age, and acoustically they all sound equal - could there still be a problem with the pickup qualities of the E string? will it make a difference if I change the string???? i don't really want to because i'm starting to dig that flat dead sound on roundwounds. helpeth me please.