Sony VGC-LV170J - Manual (Page 106)

106 n N
Using Peripheral Devices
To connect external speakers
1 Plug the speaker cable (1) (not supplied) into the headphones jack (2) i.
2 Plug the other end of the speaker cable to the external speaker (3).
3 Turn down the volume of the speakers before you turn them on.
✍
Make sure your speakers are designed for computer use.
!
Do not place floppy disks on the speakers. Their magnetic field may damage the data on the disks.