September 5, 2017

By Jim Southard

Your Lightspeed audio system plays a pivotal role in your daily classroom operations, so on the rare occasion when it doesn’t work as expected, you need it fixed, quickly.

The good news is that you can solve the vast majority of issues without calling your technology specialist. Just use these easy tips to troubleshoot your system by identifying an issue and following the steps. It only takes a few minutes—I promise!

Hearing Static?

1. Check your batteries. Low power, worn out old batteries are the number one issue we see, so always try these steps first:

  1. The infrared microphone will not charge it if is on, so turn it off.

  2. Make sure that the mic is properly seated in the cradle charger and/or the charge cord is correctly connected to the charger jack.

  3. Inspect the battery contacts to make sure there is nothing obstructing the contact. Clean with rubbing alcohol if needed.

  4. If none of these options help, it’s time to replace your rechargeable batteries. 

  5. Remember: the Redmikes require a single specially-modified, high-capacity NiMH rechargeable battery in order to properly charge on the cradle charger.

2. Static might also be caused by microphone interference. Make sure there are no other infrared microphones operating in your room on the same channel.

3. Secure connections. Check to make sure the infrared sensor, speaker, and amplifier connections are secure. If a connection is loose, it may cause problems.

4. Check your iR sensor to eliminate interference. Dark areas absorb iR light and large windows disperse iR light. If you’ve tried the steps above and the static continues, sensor placement may be the cause. Try moving your iR sensor to a new location to resolve the issue. If you have a Redcat, it should be placed in the middle of the wall at the back of the classroom. If your room is rectangular, it should be placed in the middle of the longest wall at the side of the room.

Low Volume?

5. Position the microphone at or near your collarbone for the best sound. Be sure to always wear your microphone in this position and adjust your system volume accordingly.

6. If your microphone is a Redmike VC, make sure the system volume is balanced before increasing the volume.

7. Check the volume level on the amplifier. If the volume is set too high, feedback can occur, so adjust accordingly. Remember: you should just barely be able to hear yourself when speaking at a normal conversational volume level.

No Sound?

8. It seems silly, but make sure the system is getting power and is turned on.

9. Check the connections at the amplifier and speaker(s), especially if the system was recently relocated.

9. Check the connections at the amplifier and speaker(s), especially if the system was recently relocated.

10. Confirm that an infrared signal is being received at the receiver/amplifier. The iR signal light should be fully illuminated, indicating that a signal is being received. A flickering iR light means that the iR signal is being disrupted.


If you have completed the troubleshooting steps and are still having problems, please contact the Lightspeed Service Department at (800) 732-8999 or for prompt assistance. If your product needs repair, you will be given a return authorization number to track your repair and expedite the service process.

p.s. We also have some amazing new classroom audio solutions, like the Activate product line. Check out the new two-way communication pods and the Activate mobile app here!

Jim Southard

Jim Southard

Technical Support Team

Lightspeed Technologies

Jim has been a vital member of the Lightspeed Technologies Service Team for 15 years. He is always ready to help customers or employees with any service related problem. Jim's exceptional technical service has earned him two Lightspeed Core Value Awards for Proactive Action.

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