Added a pair of active low pass filters today, they work but they don’t work… they work perfectly as I originally tested them using a guitar and CMOS based drone synth, but they don’t like the outputs from the contact mic preamps, the electret mic or the delays 😦
Hopefully this can be fixed by adding a simple circuit in front of the low pass filter, fingers crossed!!
The filters are in the bottom left of the box – the circuit board for them wasn’t built in at this point and is pictured on top of the suitcase, the second picture shows the mess of wiring inside after the board was added
