Rare tube compressor: Lomo 600U-17 ( Ломо 600У-17 ) - SCHEMATIC FOUND !!

[gyraf]

..you can't use a bulb in there, not power enough..

/Jakob E.

 

[abbey road d enfer]

What are the "Balance K" and "Balance E" settings for on the Lomo? I don't get it.

K for Katod, E for Ekran (screen)

 

[opacheco]

OH HAPPY DAY!

Today, a very kind man from the Lomo Museum near St Petersburg sent me the schematics I have been looking for for nearly a year! Many many many thanks to him, if he reads this.

So here it is, the long awaited schematic for the Lomo 600U-17 tube compressor.

If any of you have an idea of how to add a gain reduction meter,  that would be of great help.
But now, I am going to start by recapping it properly (some caps values are different than in the schematics).

It was designed in 1962, my unit is from 1964 if I believe the date stamps on the electrolytics capacitors!

thomasdf, could you post the schematic again please?
Thanks
opacheco

 

[thomasdf]

Here it is :

 

[thomasdf]

and original PSU :

 

[opacheco]

Here it is :

thomasdf, thanks a lot!
opacheco.

 

[opacheco]

and original PSU :

thomasdf, nice!!

Thanks
opacheco