The Thump...

Here is the power supply that will be powering the amp for the speakers and the rear fans.

This is a Dell power supply that I had ripped from an old computer before it was junked.  The power supply is only 200W but is enough to power the amp and drive the speakers.

Here is a pic of both the amp and power supply mounted to the revolving rear door.  Both the amp and power supply are screwed down to the door so that the door can be closed and conceal both items.

Here is another pic.

Here is a pic of the speakers mounted.  The speakers are flush mounted.  I had to enlarge the 4 inch hole to a 6.5 inch hole with the use of my Dremel.  It didn't take long and came out good.

Bonus pic!