Sennheiser EW100 Wireless Mic Troubleshooting
If you've tried everything and your audio is still off, check that the settings on your Wireless Mic are set to these standards:
Mute
Check Your Channel
Access Settings
Change Settings
Frequency Preset
NOTE: Make sure transmitter and receiver are the same AND that each set is on a different frequency (e.g. interviewer set to channel 2.1, subject set to channel 2.2)