My current rig is a carvin r600, and a avatar 210. I got the cab a few months before i got the amp Its a 4 ohm cab, so im running all 600 watts bridged into it. Just recently, whenever i play, there is a slight crackle coming from the speakers. When i got the cab, the speakers were out of phase, but i fixed that. Also, if i turn the amp up past, maybe 4, all you hear when you play the note is a fart. all this stuff happens with an active or a passive bass, with the gain all the way down, the graphic eq on or off, etc. im gonna email dave, i havent had the cab for a year yet, so maybe ill be able to get a new one, or i was thinking of just selling all of it, and starting over, and getting a new amp. Is there anything else i can do to find out where the problems are coming from? sorry for the long post, thatks in advance.