Hi Alan! Are you using any kind of digtal audio meter that goes to at least (-90 db) or so? It can be in your DAW software, or stand alone workstation.Originally posted by Alanfc:
...for the power sources and audio cables to come within 1 inch , is that a problem? In some cases they're parallel for a few inches and in some cases they're not
Watch that meter, you can trace where noise is much easier if you are having a problem. Sometimes it is hard to keep AC cords away from lines, if they run side by side, this is not good, it is better to have them cross over at right angles to each other at some point.
I have not experienced any real bad noise unless something is using a lot of current, like a big power amp, or high gain lines come too close to a computer monitor power supply. If you are having problems, and still have your lines apart, then it might be a ground loop of some kind. This is a little harder to track down.