Neurotron Ring Volume

[WeStartToDrift]

Hi folks, I've built a bunch of Aion boards and this is the first big head scratcher. I'm getting super low volume when it is set to Ring. I get full volume when it is set to octave, and though the volume is low everything else is functioning as it should. At 100% dry the blend pot is at unity volume and passes clean just fine, it just drops as you turn it clockwise. Has anyone come across this fun little gremlin?

NOTES:
1) Pulling IC2 makes it slightly louder
2) Pulling IC5 does not do anything, guessing the issue is somewhere in the wave former section?

If anyone has any voltages for their build that'd go a long way.

 

[loveforcircuits]

Since Octave mode works at full volume, you can focus on the Ring-mode signal path first. The Blend pot passing clean audio at 100% dry is a useful clue.

Have you checked the signal levels around the wave shaper section? Comparing the IC pin voltages in both modes might help narrow it down.