I have an 01 marada deck boat with a chevy 305 with one alternator and one deep cycle marine battery. I just replaced the stereo that was in it with another song because I did not want to change wiring. The problem is when I turn it up whether the boat is off, idling or at full throttle the stereo does a quick power surge when you turn it up loud. I put new speakers in that are very capable or handling the max volume from the stereo. There is no distortion or anything in the speakers when I turn it up to the point where it cuts out. It's just so frustrating when I want to turn a song up it just cuts out consistently until I turn it back down. I have read many different posts about this and many people say I don't have enough power from the battery or the alternator. .. but is that actually the problem? I also read about someone running a new ground from the stereo straight back to the battery. Would that work? Or has anyone had this problem and fixed it. It was also doing it on my old Sony stereo. Any help is greatly appreciated. Thanks