A couple of weeks ago, there was an annoying high-pitched feedback when Pastor Dan, using the headset wireless, was speaking. Gordon went through the procedures to eliminate it (take the suspected culprit in the pulpit out of the monitor mixes, cut the EQ at the approximate offending frequency) but to no avail. To our surprise, he found out that the guilty party was one of the vocal mics.

Surprising? Yes. Difficult to fix? No. Once the vocal mute group was activated, muting all the vocal mics, the feedback went away and our ears had peace again. *contented sigh*

So let's make it a sound tech practice to mute the unused channels during the sermon when they are not being used. Here's the caveat: Don't forget to unmute them when the team gets back to the platform!