I noticed a slight buzz coming from my 410 during practice tonight. It's an Goliath I with original Eden drivers. I can only hear the buzz when right next to the cab, and the buzz originated near the top left speaker. Buzz only when playing the bass, not the background noise type. And buzz with all different basses I tried. The buzz is very faint, if I am more than two feet away, its barely noticeable. And with lower volume, its gone totally. I wonder if I could have damaged anything when doing a 9V battery test on the said cab just before the practice. The drivers really moved Gonna open the cab up maybe this weekend, to check for tear, leak, loose wire. Any advice on what else to look for? Thx.