Specifications

Chapter 6: System Setup 65
Current Engine
In the Playback Engine dialog, Pro Tools lets you
select the audio engine for use with your audio in-
terfaces. The available options are determined by
which audio interfaces are connected and have
compatible drivers installed.
Changing the
Current Engine setting can be useful
if you have multiple audio interfaces connected to
your computer with different routing configura-
tions in your studio, or if you want to prepare a ses-
sion for use with a specific interface on a different
system (for example, you might want to prepare a
session created on your Pro Tools|HD system for
use with the built-in audio on your Mac laptop).
To select which audio engine for Pro Tools uses:
1 Choose Setup > Playback Engine.
2 From the Current Engine selector, select your
audio interface:
• For Avid HDX, Pro Tools|HD, and HD Native
systems, use the default setting of
HDX, HD
TDM
, or HD Native.
• For supported Avid audio interfaces (such as the
Mbox Pro), selecting the name of the corre-
sponding interface uses the Direct I/O engine for
Pro Tools.
• For third-party audio interfaces with compatible
CoreAudio (Mac) or ASIO (Windows), select
the name of the corresponding Core Audio
(Mac) or ASIO (Windows) compatible audio in-
terface.
• On Mac systems, if you are using built-in audio,
select any of the available built-in options for
playback or select
Pro Tools Aggregate I/O for
simultaneous input and output with the built-in
I/O hardware options.
3 Click OK.
When changing engines with a Pro Tools session
open, Pro Tools must close and relaunch the ses-
sion to initialize the new engine.
Playback Engine for Pro Tools|HD system
Playback Engine for Pro Tools with Mbox (3rd
generation)