User guide

Chapter 4: Making Studio Connections 21
To enable S/PDIF when using Pro Tools:
1 Make sure your have connected the external
digital device to the correct Mbox Pro S/PDIF
connector (In and Out).
2 Make sure the external device is powered on,
that it is set to the correct sample rate, and that it
is configured to provide S/PDIF clock (if rele-
vant to your device).
3 Launch Pro Tools.
4 Choose Hardware > Setup.
5 Click the Clock Source pop-up menu and
choose “
S/PDIF.”
Once enabled in the Hardware Setup dialog, the
S/PDIF inputs become active and will pass audio
to Mbox Pro.
To enable S/PDIF when using a third-party
application:
1 Do one of the following:
• On Mac, launch System Preferences (Apple
menu > System Preferences), then double-
click Avid Mbox. (You can also open the
Driver Control Panel from the Applications
menu.)
• On Windows, choose
Start > Control Panel >
Mbox.
2 In the Control Panel, choose Setup.
3 Select S/PDIF from the Clock Source pop-up
menu.
MIDI Connections
Two MIDI ports become available when you con-
nect the provided breakout cable into the
Word Clock, MIDI, and S/PDIF input on the back
panel of the Mbox Pro. See “Word Clock, MIDI,
S/PDIF Connector” on page 9.
If you need additional MIDI ports you can add a
compatible MIDI interface. USB MIDI interfaces
work effectively with Pro Tools systems on Win-
dows or Mac.
To connect MIDI devices to Mbox Pro:
1 Using the included breakout cable, connect it to
the Word Clock, MIDI, and S/PDIF input on the
back panel of the Mbox Pro.
2 Connect the MIDI OUT of your MIDI device or
controller to the MIDI IN port on the breakout
cable.
3 Connect the MIDI IN of your MIDI device or
controller to the MIDI OUT port on the break-
out cable.
On Mac OS X, use the Audio Midi Setup
(AMS) utility to customize the names of your
MIDI devices.