Comentário oficial
The problem is simple; you have the turntable connected on deck 2 (CH 3/4), but have the software configuration set for deck 2 to receive input signal from CH 1/2.
Remember, each stereo pair is counted:
Channel 1 inputs: CH 1/2
Channel 2 inputs: CH 3/4
etc.
You can see this in the DVS calibration scope as well as you have both decks 3 and 4 configured for the same CH 3/4 inputs.


