HP ep7100 - Manual (Page 25)

Setting up
User’s Guide 25
Connecting a sound system
For best home theater sound, connect the audio output of your video source
directly to a stereo or surround sound system (connection
1 in the following
illustration). Refer to the instructions provided with your video device.
However, in some situations, you might want to use a simpler setup that uses the
single speaker built into the projector (connection
2 in the following
illustration).