I Put in a sony head unit cuz my stock was having problems but when i turn my music up loud it gets all fuzzy and if i turn up the base at all it makes everything fuzzy and sound like ****. is this because i have stock speakers or is it cuz of the head unit? it has 4 X 52W output and i still have stock speakers in. What causes this and what are my choices to eliminate this? im lookink for something that is not too much cuz im still trying to save for my duel magnaflow's