







Hello,
I'm new here,I need your help, I built this simple 2-channel passive mixer for blending 2 piezos,i used 2 pots of 500 Kohms.
I am attaching photos,please check the diagram,the mixer has 2 inputs, one for the undersaddle piezo pickup and one for bridge plate sensor piezo pickup it should make a blend,the mixer's output enters to the fishman 501T preamp.
The problem is that no signal comes from the two pickups,but,if I touch the hot of one of the two inputs with the ground you hear this buzzing, it comes out from the output of the acoustic guitar.
But the sound of the strings taken from the piezo is not heard.
I do not understand where I'm wrong !!!
Thank you very much in advance to those who answer me!