Better late than never. You would not believe how many times I copied this link and managed to forget to paste it into this thread. :)

JL 500/1 thread...
http://www.carsound.com/ubb/Forum1/HTML/012895.html

I just have to warn you that the carsound forums have a fairly low signal to noise ratio sometimes. Not as bad as most other forums, but it can get a little silly.

Bruno