Today, while I was listening Last.fm from my brand new MacBook Pro, I’ve noticed that there is a unbalanced treble sound.
The speaker on the right side was predominant compared to the one at the left. I check the balance of the sound system from the System Settings and realized one more that there is a easily recognizable difference.
I checked the forums in the web and found out that it’s a common problem, so no worries 
just keep on loving your Mac. If you want to read more about it, click here.
| 
| 
| 
| 
| 
| 