Epson 800p - Manual (Page 20)

14 Setting Up the Projector
Amplifying Computer Audio
Your laptop probably has its own sound system; however, it may not
be adequate for your presentation. If you need more volume or better
sound quality, you can connect a stereo, mini-jack audio cable (not
included).
1. Connect one end of the audio cable to the Audio1 jack on the
projector.
2. Connect the other end of the audio cable to your laptop’s
headphone jack or audio-out jack. (Jack locations vary; see
your computer manual if you’re not sure which jack to use.)
If you don’t need to make any other connections, you can plug in
your projector and turn it on. See page 20 for instructions.
note
If you connected the USB
cable, you may not need a
separate audio cable to
amplify audio from your
computer.
audio cable
Audio1 jack