01-05-2012, 04:34 PM
C20 only starts to work once R10 is at maximum. R10 is a bias control to set the gain of V1 - AC/SG - by varying the level of HT- in its chassis return. So, reaction increases gain only after full gain is reached 'conventionally' via bias application, without reaction. An odd situation when looked at in today's terms but it isn't hard to see how it works, really. Provided, of course, that the thing isn't faulty...
I would have expected V1 to have been the vari-mu version but according to Trader this isn't so.
-Tony
I would have expected V1 to have been the vari-mu version but according to Trader this isn't so.
-Tony
