steelPHASE
Pat
There is no need to mix each channel as the signals are mono - they are split in the GPX battery audio circuitry to form a "stereo" signal.
Using the oscilloscope you will not be able to tell the difference between metals ( I have done this many, many times lol). Being a PI machine, the audio output does not have differing signals for metal types. The audio is generated by a VCO. The voltages used to drive the VCO do not vary due to metal type. In basic terms a PI machine is a time based circuit. Hard to describe without going into full detail on how a PI machine works.
Using the oscilloscope you will not be able to tell the difference between metals ( I have done this many, many times lol). Being a PI machine, the audio output does not have differing signals for metal types. The audio is generated by a VCO. The voltages used to drive the VCO do not vary due to metal type. In basic terms a PI machine is a time based circuit. Hard to describe without going into full detail on how a PI machine works.