The Deoxit Contact Cleaner is our magical elixir that every fitness instructor needs to cure the crackles of Aeromic connectors and Transmitter packs. Just put one little squirt into the connector, hold the connector upright and count to 10, then smack it into a tissue to clean it out. Do the same for your body-pack transmitter and spray a little onto a tissue and polish up the battery tags if you can see them - they can get tarnished by sweaty fingers changing batteries. Tarnished tags can cause unwelcome "thunderclaps of noise" through the speakers as you jump up and down. Every Group Fitness Coordinator needs to know how to clear the connector crackles - it may save on a service fee!
How to Service Your Headset Mic and Belt-pack Transmitter Connections