This is the excerpt from the 2VCO synthesizer unit. Someone, please, can explain me what is this strange arrangement with VCO2 Out jack through the switch inside of it? I understand that when the Jack is inserted I have clear VCO2 voice output. But when the jack is out, the switch inside of it shorts to 6/10. What is the purpose of it? Big big thanks is advance.
For one thing , it's an "Audity" of a drawing.
The author didn't know standard practice , so just invented a way to boost VCO2 with some kind switch on the tip which is usually done on the ring such as below. This seems to show to show how to bridge/bypass a path when connected. R227 is a "really" tiny 27K resistor with I recall the old RCA 3080 OTA used as a V-Ctrl gain .