PLEASE HELP! I can't turn off my internal microphone
I'm using Logic Pro to record some music using an external microphone hooked up to the microphone jack through my mixing board. But I keep getting feedback because the internal microphone simply won't shut off. Even if I put the volume all the way down in settings, it still won't turn off. If anyone could provide assistance in this issue, I'd greatly appreciate it.
Thank you!!
iMac 21.5, Mac OS X (10.6.2)