Whoops said:How is the restoration going on?
Well, it has been a project of love, and many years collecting parts
When I first wired it up, I used the effect send modules as an EQ for two channels and loved the sound! It was enough to play around with it. Eventually, I tacked on some transformers to be able to use mics with them.
Now I am pulling off all my hacks to the console, and will eventually have the EQs in the upper section again.
One thing that has made me curious is these WSW output transformers on the back, which, is nice to have balanced outs. I have not compared the differences between the unbalanced and balanced outs on this yet. Surprisingly, the inductance measured lower than expected. Also, I have been surprised about these being there because it's been posted that the 15C1 is incapable of or shouldn't drive an output transformer.
Eventually, I will be posting some videos about the Helios and this restoration when I have some time.