Sound balance reverting to right channel

Worked like a charm. Thanks!

There is no "com.apple.audio.AudioMIDISetup.plist" in my Audio folder, what should I delete?

I'm using Macbook Pro Retina running Mavericks

Dziagv, don't bother. Time to switch to Linux. 😉 OK am kidding. Funny thing is, after I took all imaginable steps under the sun (safe mode reboot, PRAM reset, wiped the drive and reinstalled from network, you name it....) my system seems to have healed itself (all of a sudden and after a few days after the last step--no rhyme nor reason to it) and the problem finally disappeared. However, iTunes won't even start now ((latest update and all that; gives me some run time crash dump).

And so contrary to all the claims to the contrary from Apple Support, it turns out I was right and it was NOT a hardware problem! Those guys wanted me to actually replace the motherboard! For crying out loud.

Looks like Apple is becoming the new Microsoft where your best bet was always to wipe the drive and re-install Windows. It's pathetic. I am now officially in the Google camp--not a dime of my hard earned cash will go to Apple notwithstanding the gorgeous new desktop system, which is to die for: from now on, it's Android, Chrome, and Linux Ubuntu all the way.

I reinstalled system and now everything is ok and I think I know what was cause of the problem. Recently I plug in not orginal Chinese headphones, after that in sound prefences "output" in that white table appeared some weird stuff, now it's gone. So use only orginal accessories with your mac

Wait! I take it back, after reinstalation, and using only orginal headphones problem come back, now I'm ****** off, have to do all settings again and problem is not solved

Those 2 things are couse of the problem. I didn't install any Soundflower, don't know why is that here now, but right after reinstal there where only "headphones".

Here are programms on my mac

I also have Java and Flash player. Does any body knwo with is couse of this problem?

I also have Soundflower installed. It could comes from that. I'll check this out.

I've been having the same problem with my 2013 Macbook Pro w/ Retina 13 inch. I think it happens when I restart my computer. For the longest time I thought I had hearing problems in my left ear. Haha.

PANNING SOLUTION

1 Go to System Preferences/Flash Player/ Click block all sites from storing information on this computer and consider deleting all site data and settings

2 Trash the com.apple.audio.AudioMIDISetup.plist and Audio Folder contents in /Library/Preferences/Audio

3 Empty the Trash

4 Go to Applications/Utilities/Audio MIDI Setup and balance the volume

5 Go to System Preferences/Sound/ and reset the balance to the centre

6 Restart

Hope this helps

Kroduction

[Music Producer]

Just set up a new 2012 Mini for my kids and this is happening. Most of the above didn't work and I'm not about to do the microsoft method as someone mentioned above. This is just stoopid! A mac should just work, thats why we spend the money. Apple please fix this in the next yosemite update.

+1 my audio balances in the right headphone every time I plug them in

I've been having this issue on and off the past few months.

MBP Retina, 15", Early 2013.

27" USB/MiniDisplay Port Cinema Display

I haven't narrowed down the steps to reproduce yet as it has been intermittent. Seems to happen most when I do some combination of plug in, close the lid and use Spotify.

So many ways to create the same problem.

Recently my MBA started in with this behaviour. Traced it to the installation of Boom. Not 100% certain, but close. It appears to react to my adjusting the volume on my headset by adjusting the balance instead. Increase volume pushes the balance to the right. Sometimes. Decreasing volume never pushes it to the left. I must enter the settings to correct it. I have a sense that certain sound plugins do not interact correctly all the time. I think it is probably Apples fault since there seems to be many plugins reacting, if I have read the thread correctly.

Since this works correctly 98% of the time and since I like the Boom functionality I am likely to delay testing the removal of Boom to correct the problem. Since it is intermittent I could wait a long time before I really knew it had an effect. I wonder if Apple reads these things. There does seem to be a theme to the problems.

Exact same problem every time I hit Cmd-F2 to use iMac screen as remote display for Mac Book Pro Retina over thunderbolt cable. I can even see if happen if I have the Sound Preference pane open on another screen - balance setting jumps to the left.

Wonder if this is a "feature" intended to provide better stereo separation if using a cinema display?

The "revert" to centre can be upset if the remote screen toggles back by itself (the MBPr is shut-down or cable is unplugged) leaving the iMac in Left boost mode.

The funny thing is I hadn't noticed it before... maybe I don't listen to music enough or it's a new bug? I'm running 10.10.5 on my iMac and 10.11.3 on my MacBookPro