The sound system sends sound output signals to the built-in speakers and the external sound output jack.
The sound output jack is located on the back of the computer at the left corner. The sound output jack provides enough current to drive a pair of low-impedance headphones. The sound output jack has the following electrical characteristics:
The computer has two 28mm speakers located between the keyboard and the display. The computer turns off the sound signals to the speakers when an external device is connected to the sound output jack and during power cycling.