Troubleshoot Audio Output in an LTS Classroom

If the computer's audio isn't coming out from the room speakers, follow the instructions below to check the configuration of the PC. (Click on the images to enlarge them)

1. Right-click on the speaker icon in the lower right tool bar.

2. Left-click on 'Playback Devices'.

3. Right-click on 'Speaker/Headphone', then left-click on 'Test.'

4. You should see a green audio level on the right side of the window corresponding with the selected output.

If the system audio is being fed to the 'PC Speakers / Headphones' output, you will hear audio from the room sound system. There should be a green check next to the Speaker/Headphone icon to show they are set as default. If no audio is heard, continue to the next step.

5. Right-click on the digital audio entry, (either “HDMI” or “Crestron 420”), and then left-click on 'Enable'.

If the 'Enable' option is grayed-out, this selection is already enabled.

6. Right-click on the digital audio source, either “HDMI” or "Crestron 420”, and then left-click on 'Test'.

7. You should see a green audio level on the right-hand side of the window.

If the system audio is being fed from the PC HDMI cable you will hear audio in the room sound system.

You will see a green audio level. If the system audio is being fed by the PC HDMI cable you will hear audio in the room sound system.

8. Right-click the digital audio entry, either “HDMI” or "Crestron 420”, and then left-click on 'Set as Default'