I have a late 2010 Macbook Air and I can only get one speaker to work at a time. If I go on Midi settings, only the channel 2 is working, it doesn't matter if I set it to the right or left speaker. Headphones work fine though. Can anyone help me?
Don't bother reading, misunderstood what you said. Sorry but I have no idea then.
(Not sure, but maybe it is the speaker that failed... if the output on the headphones is fine, I think it is the most likely... Can you hear anything at all from the other channel or maybe you set it to mono channel in accessibility?)