The volume on my iMac when using FaceTime is very low. I have output as high s possible in?

as possible in preferences but I can barely hear whom I am talking to. In other apps the volume seems to be fine or too loud. How can I change the vol

as possible in preferences but I can barely hear whom I am talking to. In other apps the volume seems to be fine or too loud. How can I change the volume level?

or:as possible in preferences but I can barely hear whom I am talking to. In other apps the volume seems to be fine or too loud. How can I change the volume level?

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