Warren,
>>1) 120 mVrms is far above the audio level that caused unacceptable IMD before the filter mod. IMD must be checked and the audio levels adjusted to make it acceptable.
The problem is the balanced mod easily takes that but the gain after it means the 2nd mixer gets
hit with a very high level.? With that the output of that mixer is high and that leads to the next
mixer getting overloaded.? There is too much gain after the balanced mod.? This is why the
balanced mod needs such a low input.
Allison
