well i already installed the new speakers they sound good but i get too much base out of the door and a rattle from the rear speakers. i was told the dyno matt will get rid of the rattle. now if upgrade the stock amp will it mess anything up? what i'm asking is that does the stock amp connect to anything else besides the sounds? on top of that its not loud enough. i'm looking to put a 10 inch sub and a friend of mine said to get a small amp for the 4 new speakers and a separate one for the sub. is he right? i want to go all infinity so the amps and the sub will be infinity i wanted alpine but too much money i figured infinity is good quality brand. i'm learning a lot but not enough like how many caps do i need? do i need a bigger battery? and would it be a good idea to just get rid of the stock wires and start fresh? now if i do get 2 amps should i get 2 channel or should i get 4 channel ?