So I installed a pretty beefy amp and a 10" JL sub. Now I noticed that if I am just sitting at a light or something like that, and the sub hits my RPMs drop down to about 250. My guess is that I am pulling too much power from the Battery. Would a Compasitor correct this problem or do you guys think it might be a issue with the Alternator not being big enough. Any and all sugestions will be appreciated.