How to Get Good Audio in 219 Science II


Room 219 Science II has recently been renovated as a teaching lab. It has a teaching lecturn, projector, and  document camera. However, the room does not have audio capabilities. There are several solutions for this. We will go through the best current solution in detail, assuming that you want to share a video with your class from a Windows 10 laptop.

1. Select "Laptop" on the control console.

2. Turn on the projector.

3. Plug the green analog audio jack into your laptop's analog audio out port.

Lecturn in 219

4. Connect your laptop via HDMI to the "HDMI IN" port on the lecturn.

5. Your laptop will want to send audio over your HDMI connection. But you want it to send the audio out to the Dell speakers. So right-click on the speaker icon at the lower right of your screen and select Playback Devices:

Windows 10 playback devices

6. This will open a dialog box showing your playback devices. ExtronScalerD goes to the small speaker on the projector. Right-click on Speakers/Headphones.

7. Select "Set as Default Device" in the resulting menu. This will route audio through the green speaker cable to the Dell speakers.

Choosing a default audio device

8. If you are successful, the green checkmark will appear next to your Speakers/Headphones device:

Dialog confirming that speakers are selected

9. Turn on the Dell speakers and adjust volume using the knob. You should now have strong audio output and be ready to teach.

Adjusting speaker volume

Frequently Asked Questions

Q. Can I avoid all the business about selecting audio devices above and just run my audio through the HDMI cable?

A. Yes, but you will find that although the audio successfully comes through the projector's speaker, it is not loud enough for students to hear, especially if the heating/cooling system blowers are on.

Q. What about Solstice? Can I use that to throw my screen and audio to the projector? It's much easier.

A. Yes. In fact, the audio with Solstice is louder than with HDMI (but not as loud as the analog solution detailed above). You are welcome to try this and it is the next-best option for audio quality. However, you are at the mercy of the wireless connection between your laptop and the Solstice pod. In my testing I found that occasionally audio dropped out, though it was fine most of the time. Students might need to strain to hear the audio, though.