Setup guide

Appendix F: TDM Mixing and DSP Usage 109
Switching Mixer Plug-ins
To switch TDM Mixer plug-ins:
1 Quit Pro Tools.
2 Do one of the following:
• On Windows systems, open the “Plug-ins
(Unused)” folder (Program Files\
Common Files\Digidesign\DAE).
– or –
• On Mac systems, open the “Plug-ins (Un-
used)” folder on your Startup drive
(Library/Application Support/Digidesign).
3 Locate the Mixer plug-in that you want to use,
and drag it to the Plug-ins folder.
4 Open the “Plug-ins” folder, locate the Mixer
plug-in version that you no longer want to use,
and drag it to the “Plug-ins (Unused)” folder.
5 Launch Pro Tools.
Mixer Usage Guidelines
The following conditions apply to mixing with
Pro Tools|HD systems.
 One DSP chip is automatically dedicated to
mixing in the TDM environment.
 As you reach the basic mixer limits for a single
DSP chip, the system will automatically begin
allocating DSP resources from another chip (if
available), making it unavailable for plug-ins.
 Each bus or send connection requires DSP to
mix signals. This means that each send or Aux-
iliary Input that you create will require DSP
power to mix the results.
DSP Usage with TDM Plug-Ins
To get the best results when using TDM plug-
ins, keep in mind the following guidelines
 Pro Tools|HD systems use Digidesign’s Multi-
Shell™ technology, that lets any MultiShell
compatible plug-in share DSP chips HD cards.
Up to five types of MultiShell compatible plug-
ins can share a single DSP chip.
 Stereo DSP plug-ins generally use up twice as
much DSP as mono plug-ins.
 Master Faders do not require additional DSP.
Use them freely to control submix levels,
send/bus output levels, and the master output
level of your session.
The session templates provided with your sys-
tem include several useful preconfigured session
setups that make efficient use of DSP resources.
If your computer has unused slots, you can al-
ways increase your available DSP resources by
adding additional HD cards to your
Pro Tools|HD system.
Refer to the DigiRack Plug-Ins Guide for de-
tails on MultiShell plug-ins.