Ive got some static or fuzzy noise when i turn my sound system on, once volume goes about 1/3 - the music overtakes the static, but anything under that i can hear the static noise, is there any way of getting rid of it ?

btw im not using a headunit its x2 subs + x2amps+ x2 6x9 + x2 6 1/2" splits on the stock headunit, installation people who did for me said you cant get rid of it unlesss you use a headunit and my friend agreed.

i got a feeling they are saying that and being dodgy and did a the earthing poorly.

So is it possible to get rid of the static noise without using a headunit ? i even bought this expensive converter to get rid of the engine noise and static (LC6) that set me back $285, i got rid of the engine noise but still static :S

advice please
thanks, from the noob peter.