I builded the polivoks filter pcb. the digital board work fine but when i select the filter polivoks in the system preference (pkv) the sound is very small but i can hear that all parameters of the filter work.
When i select distorsion (on) or fm (on) the sound is a little bit louder. When i select between lpf o bpf i can hear a little bloop.
when i select another filter in system preferences the sound is perfect… i think. Sound strong and clear.
I connected in jumper J4 all connections and jumper J6 all connections.
All Ic is in the right position.
Thanks for your help.