I talked with Nathan on the phone a while back and he asked about the TopDawg LunchBox that was listed on the website. So I had to tell him that even though I had planned on it, I hadn’t worked out the details for that build yet but would get to it as my next project. Since that conversation I did follow through on that project.  

The fun part of any project is making sure that everything would fit into the chassis that I planned on using, so that means a dry fit of all the parts. I had the layout for the transformers & tube sockets already as it’s basically the same as the SuperDawg, ProDawg, and PackDawg that I already build, and I had room for adding the extra controlon the front so that was easy enough. The things I needed to work on were the main circuit board & what to do with the main cap board. After working up the layout for the new circuit board I had enough room left to mount a cap can so that solved the logistics of all the parts.

For the prototype I decided to use a 50 watt Hammond OT for the multi-tap output leads as I figured that would let me have the most versatility down the road.  For now I used the 8 ohm lead and just taped the others off.