Well I got the sub box installed that I got from Super Crew Sound, and since I did not have a console in my ST, I bought a lid off eBay and had the local upholstery guy cut the stock cover and put my lid on.

In the box I put a AudioBahn 1208X sub.

 

Nice and clean install! What is that little black box with a control ****? Is it the gain control?

 

I think it is thats what mine looks like, its gain or sub volume which ever you prefer to call it.

 

its the volume for the sub, it comes from the crossover under the rear seat