I was getting no output (I was using the calibration tones from my Rotel 1056 receiver to check for output) from my sub. I checked the fuse and it was blown. After I replaced the fuse, I still got no output and after about 30 seconds, I started to get rapid booms out of the sub. This occurs whether the Rotel amp is on or off. I have sent an e-mail to SVS and I'm sure they will help me out. I was just wondering if anyone else had seen this type of problem.