Yes, I have been trying to help Alex with this for months and everything we try makes no difference. When he uses his headset on his AV8R the mic always transmits what we say back to our headsets at about 3 times the volume.
He has tried 2 different xbox headsets (both work when plugged into gamepad) and both AV8R sticks give the same results. I'm running out of ideas.
Alex, how many of this type of microsoft headset do you have?
