[shizzon]

I will have to agree with some of the above and say stay away from capacitors in car audio aplications, there are far better and more practical options out there. I would suggest instead to simply add another battery or better yet a "power cell" designed for the rigors and discharge rates associated with high end car audio.

To back up my claims i will tell you to look at the worlds loudest vehicles. I bet they aren't using capacitors, there using insane amounts of high quality batteries or power cells.

Now obviously these guys are taking things to the extreme, but they prove that batteries/power cells are the best way to supply the current demands of car audio systems