Setup guide

Chapter 6: Making Hardware Connections 41
4 Set your instrument’s volume to its optimal
level. For example, the optimal level for most
keyboards is between 80% and 100% of maxi-
mum volume.
5 On the front of the Mbox 2, carefully turn the
Gain control to the right to increase the input
level of your keyboard.
Digital Input and Output
Mbox 2 provides digital inputs and outputs for
S/PDIF format digital audio. The two channels
of S/PDIF digital input can be used in combina-
tion with the two analog inputs (for a total of
four simultaneous input channels).
Connecting Digital Devices
To connect a S/PDIF device to Mbox 2:
1 Use two 75-ohm coaxial cables with male RCA
connectors on both ends (purchased sepa-
rately).
2 Connect the device’s S/PDIF output to
Mbox 2’s S/PDIF input port, and the device’s
S/PDIF input to Mbox 2’s S/PDIF output port.
Using S/PDIF Input
To configure Pro Tools to record from a S/PDIF
device:
1 Choose Setups > Hardware Setup.
2 Select S/PDIF from the Clock Source pop-up
menu. On the front panel, the S/PDIF LED lights
to indicate this setting.
3 Click OK.
4 On the recording track, select the appropriate
stereo or mono S/PDIF source from the track In-
put selector.
S/PDIF Mirroring
Pro Tools LE uses S/PDIF mirroring to automati-
cally “mirror” the audio that is sent to Line Out-
puts 1 and 2 on the S/PDIF RCA outputs. This is
useful, for example, if you are monitoring a mix
using your Line Outputs, and also recording the
same source to an external S/PDIF device.
To configure Mbox 2 to record from a digital
source, choose Setups > Hardware Setup in
Pro Tools, then select S/PDIF in the Clock
Source.