Thanks. I will try pushing in the drivers tonight to see if I hear something. However, if the driver would be defective, wouldn't I hear this more often in music or movies rather than just these 2 specific scenes?
Not necessarily. I had a loose dust cap on an M22 driver that only rattled on specific notes on one song. The bad crossover I mentioned above only happened at reference level SPLs during specific music being played in Mass Effect. In both cased replacing the defective part solved the problem.