looking for adr/helios f600 shematic

[salomonander]

hey
im in need for a shematic for the very first helios/adr f600 limiters. the ones with potentiometers for attack and release. can anyone help? or does anyone maybe have one of these units and can tell me which resistors to replace with what pot? i have the -lb version which lacks any controls and id like to add them.....

 

[Dr Gris]

Maybe try a mail to Arny at Helios Electronics Ltd.
I think he had some looooong conversations about Helios stuff over at Gearslutz a few years back.
And also helped people with schematics if memory serves me right.

Best
//Magnus

 

[salomonander]

no luck so far