Somethin is up..

Okay, this didn't start happening until recently, but sometimes my system sounds staticy. . sometimes it don't. .sometimes my right speakers won't play . . sometimes they will. At times you have to turn the volume up really high just to hear the sound. Before I shaved my radio antennae. .I could pick up the radio fine. . no static or nothing. . could it be my Disc changer. . or what.. sorry so long.. but please help anyone.