That's a good enough explanation for me. :-) I didn't believe the power cord made a difference until I plugged the computer-grade cord in. It made a whole lot of difference... all bad. I tried moving speakers, subs, and equiment around. I made sure every connection, IC, speaker wire, and power cords were all tight. The sub still sounded like it was "farting." I put the original cord back end everything went back to normal. I was even telling a guy at work that I'm gonna try this and prove to myself it makes no difference what-so-ever what power cord I use about two hours earlier. I don't need to be convinced any further. Thanks! leo.