Back in the saddle; a total repackaging

Some updates in case anyone stumbles across this:

First, obviously this project was shelved for a while. Literally. I moved about 5 years ago, and the mixer (until very recently) has sat on a shelf in my new house since then. As I found myself lusting after many of the new boutique rotary mixers coming out (E&S, Taula 4, Condesa Lucia, Mastersounds, and so on), I realized I should probably get my own project finished and I could end up with something on par with these (save some shortcomings on the fit-and-finish).

I was never really happy with the enclosure, or the layout, and I had half-assed some of the wiring with the idea that I'd re-do it to a better standard later (hah). I mean, check out this mess:

So all the boards got torn out of the old box, a new rackmount enclosure from Hammond Mfg was ordered, and new connectors and some various other parts were ordered from Tayda Electonics.

And thus, re-construction began. First, using a couple small stripboards, I made up these distribution boards for audio and power. The signal needs to pass through caps before each main channel volume knob, and resistors after, then the resistors need to join into just one set of L/R outputs. There is also a 2-ch strip for audio distribution post-fx-return, a 2-ch strip for cue audio distribution, and a 3-ch strip for power distribution (+, ground, and -). Still a couple caps and connectors to be installed here, I think they were still on order at the time.

For the cue select, I previously had a rotary dial for cue select, and an LED on a each channel which would come on if that channel was selected for cue. But I wanted something more slick. So I ordered some relay boards off Amazon, and found a good price on some illuminated pushbutton switches on AliExpress, and plan on having push-button cue select running through relays. I will also use a relay for turning the FX loop on and off. My hope is that since these relays seem to use the appropriately placed diodes, there will be minimal "pop" and one will be able to turn the FX on and off without much fuss in the middle of playing music. I will hopefully eventually be using the loop with an isolator, but we're not there yet. Here are the relay boards:

Next up: laying it out and mounting PCBs