YellowRoushPony9477

Hey guys, just a quick(hopefully) tech question. I have the Kenwood DDX318 Installed in my 2003 GT Vert, and the other day I was driving and I heard thumping from the speakers, always two at a time, coming from the left front speaker and I think the others as well. It was almost like a heartbeat. Then after driving for awhile it becomes very loud static, forcing me to shut the radio off. When I turn off just the radio and turn it back on, it doesn't fix it. And then when I turn the car off and back on, that still doesn't work. Any suggestions?

gringodon.com

After it cools, does it work for awhile again or is it now pertinently bad? How long ago was it installed?