I have an Ampeg SVT 7 PRO and I run it through an Ampeg SVT 610 HLF. I've gigged with it in clubs, and it sounds wonderful! The other day, I turned it up really loud, just for a second and hit a note. I heard a cracking sound that seemed to come from the Tweeter (Woofers fart). I've since been playing through it at home and it sounds great. Is it possible that this cracking sound was just the vibration of it being turned up and hitting a note really hard? It seems to be fine, as long as I keep volume at reasonable place. Even when I gigged it wasn't as high as I turned it. So again is this like telling the doctor "it hurts when I do this", and him saying " don't do that "?