I know i dont usually post here but i had a jvc head unit do this...it ended up theres like an amp inside your headunit to obviously run your speakers...continuous cranking through splits and 6x9's burnt this out...headunit stuffed. Bought an alpine one...solved my problem. Made sure this isnt cranked all the time untill i can buy an external amp. This may have shat itself due to not so healthy earths?? who knows. sounds fair to me