I have a problem with my MacBook Pro (10.5.8) – the audio output has no sound when connected to a stereo component, but when connected to small speakers it works fine. Internal speakers are working also. Does anyone have an idea?
MacBook – Why does the MacBook audio output have no sound when connected to a stereo component
audiomacbook prospeakers
Related Solutions
(I solved my own problem right as I was about to post here.)
The Mini DisplayPort must be plugged in before the USB cable. Unplug both, plug them in in the correct order, and it should recognize the sound.
Unplugging only the USB cable will not work.
Both displays show up as audio input and output devices on your Mac and you can pick one or the other to route audio in to from applications. You might be able to create an aggregate device out of them and use them as a four channel output source, but that would not turn out well sonically speaking. You can see it here.
Best Answer
You seem to have isolated the issue to the stereo component. If it expects line in signal, you might need a device like the Griffin iMic to provide line level sound.
Also, setting the volume lower might make the input low enough to not trip a protection on the stereo, but usually line level is higher than speaker/headphone level so that might not help at all.