Ei I have this project I have been working and trying to improve to my needs.My question : Ho do I create a Low pass filter(in one of the channels) in order to cut some highs on the GGG mini-mixer project?
http://www.generalguitargadgets.com/diagrams/mixer_sc.gif
Hope this helps..
http://sim.okawa-denshi.jp/en/CRlowkeisan.htm