I have JBL Creature II speakers. They're pretty new. Recently I've noticed that they sound odd, but it took me awhile to realize what it was. The background vocals and music are much louder than they should be. They overpower the lead vocals. I have no idea what caused this. I turned off the equalizer on iTunes and it didn't change it. I checked the plugs on the speakers and they were fine... If anyone has any suggestions I would appreciate it... I have no idea how this happened. Thanks.