I finaly figured out why my system was really working before, it was because of my rca cables, I switched them out and everything was back to normal, but not even two mins later, I was messed with the sub volume level (to put it back to where it was before, on the headunit of course) and it got extremely quiet, so I turned back up the volume level on the sub and now my whole system is back to being quiet, not as quiet as what it was before, because I still can hear it when I turn it up loud, but no where even close to what it should be, am I messing rca cables up by doing something and that's the reason why this is happening or could it be another reason?