Quote Originally Posted by sd98gtp View Post
a capacitor serves as a sort of reserve. Ever seen a car w/subs that when the bass hits the headlights dim? a cars electrical system is only set up to supply so many amps of current. A capaciter stores up energy so when that big bass note hits and your amp needs that current NOW it's there and doesn't pull current the car would otherwise use for its headlights, tail lights, ect.