Audio installers?

I acquired a new to me 2006 f430 this past weekend and I need some audio work done. It has the factory sub woofer but it doesn't work. It also has a 6112 head unit that I know is not factory for that year. I found the option in the menu to enable the sub but it still doesn't work. I'm also
having trouble getting the bluetooth to pair with my phone but I'm not terribly concerned with that.

I'd like to find someone to troubleshoot that and depending on how it sounds after possibly replace all the speakers with units that still look stock. I'm also planning to add the ipod adapter.

Can anyone recommend a shop in Austin that could do the work? Thanks in advance.