I don't believe the A/C will cause condensation on the X Box. The air that blows out of the vents is pretty dry. Most of the moisture has already been removed from the air when it blows past the evaporator. That's why you see water dripping outside the car when you have the A/C on. In fact, many vehicles actually run the A/C when you turn the controls to defrost, to have dry air blowing on your window.