I recently got around to building my DYNX. Everything seems good -- passes audio, compression works, gate works (haven't fussed with the expander yet). But I am finding the calibration instructions deeply frustrating to understand. This is probably a "me" problem, I realize, but I am struggling to work out what some of the instructions mean exactly. A simple example is when we are asked to measure AC voltage at a given test point...but against what? A measurement between the test point and the (-) input pin can give a totally different result than audio 0v than the (-) output pin.
Some of it I have been able to figure out (I can get a 5.00vdc reading at whichever test point that is -- TP2? -- with the correct input level), but the moment I run into any discrepancy, I'm unclear on what is going on. I lose the thread pretty early in the process, when there is the instruction about how the level on the return signal to the DAW should remain within 1 db (dbfs?) as the input signal is turned up. My measured gain reduction and LED meter seem to be in harmony (when the meter says 20db of gain reduction, that's pretty spot on with what it's doing), but the return signal does not stay within 1db of where it was when GR began, even at "infinity" ratio. I've run the trimpot all the way to the end of its track and still can't get it there. Any thoughts?
