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Unbalanced stereo sound (left is not heard) only works with bluetooth stereo headset

The stereo sound on the left could not be heard


with both when using headphones or the built in speakers



but when I connected my mac with a bluetooth stereo headset, everything was perfect.



How do I fix this, because I have to mix some sound and I can't work with this...



Thank you.😕

MacBook Pro, Mac OS X (10.7.4), 13" 2.53

Posted on Aug 11, 2012 9:59 AM

Reply
Question marked as Best reply

Posted on Aug 11, 2012 2:50 PM

System Preference > Sound > Output


Settings for the selected device:


Balance

Make sure that the pointer is set at middle.


If this does not help

Reset SMC. http://support.apple.com/kb/HT3964


Choose the method for:

"Resetting SMC on portables with a battery you should not remove on your own".

Best.

1 reply

Unbalanced stereo sound (left is not heard) only works with bluetooth stereo headset

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