I received my M22v2's and EP350 sub on Monday.After carefully connecting everything I have a very noticable hum from the sub. I went thru all connections. Cable hook up, speaker connections etc and still had the hum even with the receiver turned off. It would vary in loudness.
I took a 3 prong extension cable and snipped one of the ground wires off and plugged the sub in with that. No more hum!!. How do I solve this problem and still ground my sub properly?