Another mic is not being picked up at all,ive changed the group and channel and tried a different headset and it seems to be the connection to the pack, when i changed the headset, it makes a loud popping sound, we have a big musical coming up and the mics of course are much needed!!!! thank you for the help

Audio Players & Recorders - ElectroVoice - Electro Voice RE-97TX Headworn Microphone (TA4-F) (Brown)...