InFocus LitePro 560 User Manual page 22

Setting Up the LitePro
13. If you have a LitePro 570, you can connect it to an externally
Figure 11. Connecting an external speaker
14
amplified speaker system. Plug your audio cable into the "Audio
Out" connectors on the LitePro.
You must use an amplified external speaker with the LitePro.
A non-amplified (passive) speaker will not work.
LitePro 560/570 User's Guide