Hooked up a russound a-h4d multiroom system every thing works good exept i have a high pitched hum out of celing speakers. The reciever is hooked up to a surge prtector along w/ power sub and the a/c for the key pads no cable t.v. any fixes.. This is in a brand new house I ran all the wire rated for in wall. The system uses cat 5 to the wall from the wall to the speakers is speaker wire??
