Pro Tools and Pro Tools HD 10.0 on Mac OS X 10.6.x (“Snow Leopard”) and Mac OS X 10.7.x (“Lion”) — 10/13/11 15
Mac OS X 10.7.x (“Lion”) Core Audio Manager quits unexpectedly with Digi 002 or 003 family interfaces
When using Core Audio Manager with a Digi 002 or 003 family interface (for example, to stream audio from the Web), Core Audio
Manager can quit unexpectedly. When this occurs, quit any open applications and restart your computer; then try starting Core
Audio Manager before launching any Core Audio-compatible audio application.
Selecting “Digidesign HW” for Sound Input or Output in System Preferences May Cause Pro Tools to Fail to Launch (99576)
If “Digidesign HW” is selected as the input or output device in System Preferences, certain common actions in the Finder may ac-
tivate the Digi CoreAudio Manager. These actions include selecting an audio or video file while in Columns view or while the In-
spector window is open, or using Get Info or Quick Look on an audio or video file. Once activated, CoreAudio may remain con-
nected even after selecting a different file or closing all Finder windows. If Pro Tools is launched while CoreAudio is connected,
an error message stating “Digidesign Hardware is in use by another application. (–1133)” may occur.
Pops when Changing Sample Rates
With the Digi CoreAudio Manger, your Pro Tools hardware may produce a “pop” or “click” sound if Pro Tools was last used at a
sample rate different from the one the new CoreAudio client is set to use.
Pro Tools Hardware May Not Play Sound from QuickTime or Safari with CoreAudio (PTSW-3093 and PTSW-27892)
If you do not hear sound when playing back audio through Pro Tools hardware from QuickTime or Safari with the Digi CoreAu-
dio Manager, try one the following:
• Open the Mac System Preferences and click Sound. While QuickTime or Safari is playing back audio, change the Output from
Digidesign HW to Internal, and then back to Digidesign HW.
– or –
• Launch iTunes before launching QuickTime or Safari.
Buffer Sizes Incompatible with Pro Tools Hardware (39542)
In Cubase, Traktor, Live, and certain other applications, you can select Buffer Sizes that may be incompatible with your Pro Tools
hardware. Selecting incompatible buffer sizes results in distorted sound and may cause other problems. Please make sure to select
Buffer Sizes listed in the following chart:
Reason Output Distorts with Buffer Size Settings Less than 256 Samples, at 88.2 kHz or 96 kHz (39399)
Distorted sound can result when a Reason user has selected a Buffer Size of less than 256 samples at sample rates of 88.2 kHz or
96 kHz.
Cubase SX Buffer Sizes Supported by Avid Audio Hardware
Avid Audio Hardware Supported Buffer Sizes
Pro Tools|HD 128, 256, 512, 1024
HD Native 128, 256, 512, 1024
003, 003 Rack, 003 Rack+, Eleven Rack, Digi 002,
and Digi 002 Rack
64, 128, 256, 512, 1024
Mbox and Mbox 2-series interfaces 32, 64, 128, 256, 512, 1024
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