Input PCBs

I came up with a basic idea of all the features and started working out how to go about it, which took a while as it was the first time I had designed anything any more complicated than a DI box. About this time I was still in uni and one of my lectures was helping me bounce the ideas around and the project was moving along pretty fast.

At this point the unit was going to use 'passive' summing with transformer inputs, with 1 gain stage using a DOA and the other tube based. After playing around with the ideas for a while I went ahead and produced a prototype PCB of the input section to test the concept.

A little daunting as it was the first PCB I had ever had made and I was a little unsure ordering it from PCB Cart in China, but it came a lot faster than I expected and looked top notch.

The PCBs all worked out except that the Cinemag input transformers had to be mounted on the bottom as I messed up the footprint. Not too bad for my first attempt.