My build progress

[Bebe]

Hi! I am kinda new in this whole synth thing and I finished building this diode ladder VCF by Moritz Klein but I cant get it to work. The problem is probably in the amplification part, but I cant figure it out.

Here is the post where i described problem in detail:

Designing a diode ladder filter from scratch

Hi! I have an issue building this filter using the verified stripboard layout by Dud. The filter doesn’t work for most of the time but when feeding it a high pitched sound from my VCO while filter is completely open, you can hardly hear it. Do you know what can be the issue? I checked if the IC’s are powered correctly and checked for false connections between the copper strips. Here are some photos: [image] [image] [image]

If you know what is the issue, please reply.