
General discussion thread:
https://www.muffwiggler.com/forum/viewtopic.php?t=193646&sid=e00222ae7666a4e9ce9a531164d022e6
Website:
www.vocoder.eu/index.html
Building instructions:
www.vocoder.eu/building-guide.html
BOM:
www.vocoder.eu/bom.html
PCB layouts:
www.vocoder.eu/boards.zip
Documented errors:
- 1/
Some resistor and trimmer references are incorrect included in the initial BOM.
Please download a recent version of the BOM (20/11/2018 or later).
2/
The offset compensation on the filter boards do not allow easy fine-tuning.
In case of an inaccurate setting of the trimmers, the LM741 opamp immediately saturates.
See page 11 how to easily fix this.
3/
To adjust the LM741 bias exactly to 0,00 mV on the low pass filter and high pass filter, there is a minor modification on both PCB's required.
See page 12 how to easily fix this.