Mbox has distorted audio on input and output

SOURCE: mbox problem (no input,output)

i'm running os 10.5.6 w/ protools 8.0 and the original mbox. i had the same problem. protools opened and seemed to work except there was no sound from either analog outputs or headphones. this worked for me:
1. shut down computer
2. unplugged all usb cables except keyboard/mouse
3. restarted computer
4. re-plugged usb cable from computer to mbox
5. opened protools session
6. hit play and now i'm hearing sound and everything seems normal.

i hope this helps everyone else

SOURCE: MBox 1 Compatibility with new Macbook Pro Unibody and OSX 10.5.6?

unfortunately any pro tools application below version 7.4.2 is not compatible with leopard and I don't think you can use mbox 1 with the universal mac I may be wrong but I wanna say I tried a while back and even garageband wouldn't find it anymore but you can check for sure by going to the applications folder then open the utilities folder in there is an application called "Audio Midi Setup" and you can select the mbox in there if you see it but if not there is no patch or driver that I know of to get it working unless you upgrade pro tools which if you do upgrade I suggest getting mbox 2 and getting LE with it

SOURCE: Pt wont see my mbox

need driver for ct4670 sb!tnx!

Matthew Spark

• 1066 Answers
• Posted on Dec 28, 2009

SOURCE: i have a problem with my mbox (2004 model) running

Leopard OSX has known problems with usb audio recording devices.

SOURCE: I have an mbox 1,

Hello,
It is a widely known fact that the mbox 1 has problems on MAC. Some people have had success following these instructions:

1) Close iTunes, pro tools or anything that could be trying to use the audio device.

2) Open the Digi CoreAudio Manager. (This app should be running if you're not using Pro Tools, but want to use the mbox as for other computer audio like iTunes)

3) Set the Buffer Size in CoreAudio Manager to 256 (this is the main thing for resolving the issue)

4) Go to System Preferences > Sound and set the output to Digidesign HW

5) Open iTunes, pro tools, audio should work through the mbox

Note: If these steps don't work, try them again after restarting with the mbox connected

Hope this helps anyone looking to fix this issue!


And, if after all that, you're still having problems, try this:

Quit out of all open applications.

Trash the following preference files:

1. Mac HD > Users > (Your User Name) > Library > Preferences > com.apple.systempreferences.plist (delete this file)
2. Mac HD > Users > (Your User Name) > Library > Preferences > com.apple.audio.AudioMIDISetup.plist (delete this file)
3. Mac HD > Users > (Your User Name) > Library > Preferences > com.digidesign.CoreAudioManager.plist (delete this file)
4. Mac HD > Users > (Your User Name) > Library > Preferences > ByHost > com.apple.systempreferences.xxxxxxxxxxxx.plist (delete this file)

Empty the trash, restart and let me know if it's working or not.

They stress (have the audio device plugged in and turned on before you turn your MAC power on. The device does not support the mac sleep function so if the MAC goes to sleep, you will need to reboot.