BenQ EW600 - Sound and Memory Settings; Adjusting Volume and Feedback Sound

51 Operation (under Launcher source)
Sounds
Clear Memory
Clears out the memory of unnecessary files and boosts available RAM.
Feedback
Sound
Enables/Disables feedback on the audio provided by the projector.
Volume Adjusts the sound level for the projector.
Mute Disables/Enables audio for the projector.