This is a reminder that we need to sometime change the microphone protectors in our CI's. Cause I admit I forget this a little sometime.
Replacing microphone protectors
Microphone protectors are designed to protect the microphones from
dirt and moisture.
A dirty or blocked microphone protector results in the gradual
deterioration of sound quality. Replace the microphone protectors if you
notice degradation in the sound quality, or if the protectors look dirty.