I stopped by my local Microcenter today and found they had a 14 watt amplifier kit. The Mfgr website is http://vakits.com/NF-1344 (http://vakits.com/NF-1344). The schematic is http://vakits.com/sites/default/files/image/1344/sch1344.pdf (http://vakits.com/sites/default/files/image/1344/sch1344.pdf). I have provided two pictures that show my current issue. I have completed the pcb board but I am having a problem with the power jack. The one I have laying around doesn't work when mounted in the enclosure. It is grounding out. It works when not mounted to the shell. I am using a Boss power cable to provide power to the pedal so I need a panel mount jack that would work. I am ordering a bunch of things from Mouser soon.
Also, if someone could provide me some advice on the enclosure. I lost the screws somehow. Anyone know what size I'm looking for?
(http://i.imgur.com/6P1Y7Jll.jpg?1)
(http://i.imgur.com/pSaMV3ul.jpg?1)
You need to use one of these.
http://www.taydaelectronics.com/hardware/dc-power/dc-power-jack-2-1mm-enclosed-frame-with-switch.html
The jack that you are trying to use is not isolated. When used with a negative center power system the +V is grounding out on the metal box.
This link has replacement screws for a variety of enclosures, but you have to know your model for it to help much: http://www.smallbearelec.com/servlet/Categories?category=Hardware%3AEnclosure+Screws
Try 6/32 screws from a local hardware store. They are inexpensive and you don't pay shipping!