I just bought the Energy S8.2 sub and Im not quite sure if it is defective so I need some help from you guys. When I connected it for the first time after unpacking it (line in), I got a loud hum that didnt stop even when I removed the rca cable out from my receiver, the only way to stop it was to switch the sub off. I tried connecting through the other two inputs, xover and using the speaker wire yet I still get no signal. I tried cranking the volume up thinking the auto-on might not be getting the signal and I also used different outlets with no luck. Does it sound like it is defective merchandise? The only thing I could think of that might have been my fault was I had music playing already when connecting the sub but at a very low volume so I doubt it coulve damaged the sub. I called up the shop I bought it from to try to troubleshoot the problem and the rep told me that with Energy equipment, they had a less than 1% return rate so Im wondering if I just caught a lemon.