Axiom Home Page Forums General Discussion Technical Questions subwoofer noise

I just moved my subwoofer. When turned on I am hearing a radio station. I have tried with and without a cheater plug. I have also made sure outlet was grounded. I tried a couple diffrent outlets and have found I get this problem in all except the outlet it was originally in. It stops picking up the radio station if I change the crossover to "in" (Using the subs crossover instead of the receiver) or DC the sub cable. Any help is greatly appreciated.

Jeff