User guide

Mbox Pro Setup Guide20
Connecting Keyboards and
Mixers
To use a keyboard or mixer with Mbox Pro:
1 Plug your keyboard (with line outputs), mixer,
or other audio source into any one of the four
Line Input channels on the back of the
Mbox Pro. If your source is stereo (such as a ste-
reo keyboard or the stereo output from a mixer),
connect the left channel (often the white plug)
to Input 1, and right channel (often the red
plug) to Input 2.
2 On the front of the Mbox Pro, set the
Front/Rear switch to Rear or Mic/Line switch to
Line (that corresponds to your channel).
3 On the front of the Mbox Pro, turn the master
volume knob to the desired level.
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 rear panel of the Mbox Pro, use the In-
put Level switch for +4/–10 input line level set-
tings (one for each stereo pair, 1/2 & 3/4). In the
“out” position the level is set to +4; and when
pushed to the “in” position, it is set to (–10).
To use Aux Input 5/6 Line inputs:
 Plug your keyboard, mixer or other line level
device into the Aux Input 5/6 inputs (L and R).
Connecting DJ Equipment
To use the Aux Inputs 5/6:
 Plug your DJ mixer, DVD player, or similar
outputs into the Aux Input 5/6 inputs (L and R).
If your keyboard has unbalanced outputs,
set the line input switch to -10 instead of
+4. Refer to your keyboard’s documenta-
tion.
There is no RIAA preamp or grounding post
on the Mbox Pro, so connect a turntable to a
mixer or phono preamp before connecting to
Mbox Pro.
For Aux inputs 5/6, the 1/8-inch jack takes
precedence over the RCA jacks.