How can I make my projector louder?

How can I make my projector louder?
Adjusting Volume

Press and hold the + or – button on the volume button. This will adjust the volume of the speakers in the room (affects all volume including microphone, PC, laptop, etc) A/V Mute.
Press the volume tab on the right or left side of the Touch Panel and adjust using the arrows on the screen. A/V Mute.

Adjusting Volume
  1. Press and hold the + or – button on the volume button. This will adjust the volume of the speakers in the room (affects all volume including microphone, PC, laptop, etc) A/V Mute.
  2. Press the volume tab on the right or left side of the Touch Panel and adjust using the arrows on the screen. A/V Mute.