BenQ TK800M User Manual page 17

Connecting audio
The projector has built-in mono speaker(s) which are designed to provide basic audio functionality
accompanying data presentations for business purposes only. They are not designed for, nor intended
for stereo audio reproduction use as might be expected in home theater or home cinema applications.
Any stereo audio input (if provided), is mixed into a common mono audio output through the projector
speaker(s).
The built-in speaker(s) will be muted when the AUDIO OUT jack is connected.
• The projector is only capable of playing mixed mono audio, even if a stereo audio input is connected.
• If the selected video image is not displayed after the projector is turned on and the correct video source has been
selected, check that the video source device is turned on and operating correctly. Also check that the signal cables
have been connected correctly.
Connection 17