Matt's Cordoba SX *Not your average Cordy :P*

[Icecavern]

I don't need 2awg, 4awg has an ampare rating to 60 amps, which is far more than i'm using, there's no need for 2awg with my setup :S the wiring on my 3 phase 200amp compressor is 0awg..... i think it will be good enough for a couple of 600w (RMS i'm no fool and believe the hype of "peak" power lmao!) amps, the cap is staying because it does serve a purpose, i like quick, hard hitting bass, and it supplies the current when its needed.... thats the idea.... im not saying the way your setup worked was wrong... i'm just saying i won't be changing mine because its more than adequate for the task it has to perform. the wiring to the alt is all new, all earths are new, and the earth in the rear of the car is welded to the body..... i highly doubt that is anywhere other than perfectly connected lol!
The reason you could get away without using a capacitor is because you were in effect using the car's battery to supply the extra oomph that the alt couldn't provide, and as the cars battery is not designed to take rapid discharges of the sorts that my system will put on it the capacitor will be staying, as it is designed for this purpose!

3 phase power and 12v can't be compared, that's just crazy.

You have 90a alternator in your car, if your lights are dimming, either your cable isn't high enough gauge or your alt can't supply enough power, which means you're pulling more than 60a

Quick hard hitting bass is the least stressful on a car audio system ( and easy to produce with just a correctly sized sealed box. ) Low bass is much more demanding.

Weld is the least conductive part of a car. So you're earth isn't as good as you think.

Caps are not designed to fix a failing electrical system, but so many manufacturers sell them because people don't know any better. Try looking at competition cars, if you find one with a CAP it will be one of the very top SQ cars used to smooth out the power in an electrical system that doesn't have any issues, but is simply there to smooth out any tiny fluctuations in voltage in case it effects the SQ. And TBH there's probably only a couple of them that do anyway.

Fell free to ignore me, that's your right. But as an ex EMMA UK install judge I know what I'm talking about. And I was IASCA UK champion one year so my system was spot on, and quite happily did 147db without any caps what so ever, and no dimming of lights.

Pete