FWIW, I have taken many of the links listed here and added them to my own personal page. This might make it easier for someone to look through them and not have to weed through signitures, etc here.
I will continue to add links in as I come across them.
Car Audio Links
How to wire almost any speaker combination.
I know the parent site for those two pages is already listed but the links on the site aren't very intuitive; I looked for about 5 minutes and could not find those links. Plus they're two topics that are frequently asked about so I figured direct links would be good.
A veritable encyclopedia of audio terms and a whole lot more.
Cool enclosure designer software with tone generator Hint: you need to set WAV as the record source, if you want to save the tones.
How to build a sub box.
How to eliminate engine whine
Found by Quack:
Great tutorial on how to tune your gains on a JL amplifier.
I could have sworn this was in here?