Great! -- nice job. I don't think anybody on these sites has ever done this before.
Very impressive what you did -- and of course impressive about the car too.
But.....how about telling us what "ATX" is, and exactly what is the thing that you used? I bet that very few people (on any of the TSX sites) actually know about this. I mean, I'm
super into sound and decibels and things like that, and I don't even know.
Well, I did a little googling, and I think maybe I do know. First of all I'm taking the bold gamble

that Rat Shack is a term of endearment

for Radio Shack. So maybe you mean this (or something similar)?
http://www.radioshack.com/product.asp?cookie_test=1&catalog_name=CTLG&product_id=33-2055