Not a manufacturing issue..a speaker is an input device, if you do something wrong it smokes and stops working. It only does what you tell it to do in the environment in which you place it in. It's no different than buying a brand new car..taking it 100mph in 1st gear on the interstate and the engine flies apart..that's not because it is a bad car, or the car had issues. It's because you did not shift to the 4 other gears that the car has. Again, it only does what you tell it to do in the environment in which you place it in. Feel free to repeat that on ROE as they continue to think you are brushing it off on cheap amps.