im having a nightmare!ive installed a pair of tweeters to the rear of my car they have inline cross overs and are powerd via my jbl custom fits that are in the rear.for sum reason the amp that runs them keeps cutting out only when i turn it up above 30 and my head unit goes upto 62 any advice?i should know as i used to fit radios but this just eludes me,it has to be sumik simple as i know the amp is fine!