DO
GUIDE
DO
Adjust the Settings
Refer to the following illustration, and adjust the controls to achieve the desired results.
Set Phantom Power
Each input has switchable phantom power (+48v) for use with condenser microphones. The
MMX-6-USB ships with the phantom power switches (located on the rear panel) in the OFF
position. When setting up the system, first determine if the microphone(s) to be connected
requires phantom power. If phantom power is required, ensure that the microphone input's
individual gain control remains closed (turned counterclockwise), and slide the input's phantom
power switch to the ON position. The corresponding LED illuminates.
Set the Microphone Input Levels
Each microphone input features an adjustable input channel level control on the front panel.
The MMX-6-USB ships with the level controls at the lowest setting (counterclockwise, closed
position). Use a flat-head screwdriver to adjust each input channel's level.
NOTE:
When adjusting the input channel level controls, use slow and easy pressure. Do not
force the control or rotate past the indicated stop.
Each input has an LED to monitor the signal level. When adjusting the level, monitor the input
channel's LED.
• When a signal is present, the LED illuminates green.
• When the LED changes to red during the course of normal speech, it indicates that some
clipping is occurring.
• A steady red LED indicates that the input is steadily clipping. When constant clipping
occurs, reduce the microphone level. Brief amounts of signal clipping may be acceptable
while steady clipping is not.
MMX-6-USB
6-Channel USB Microphone Mixer
DO
Install the Device
The Crestron
®
MMX-6-USB can be mounted onto a DIN rail, mounted to any flat surface, or
placed on a tabletop. If necessary, use screws that are applicable for the mounting method. See
and
for installation options.
NOTE:
The MMX-6-USB can also be rack mounted. For rack mount installation, refer to the
RMK-IFE-1U Installation Guide (Doc. 7627) at www.crestron.com/manuals.
Flat Surface Mounting
DIN Rail Mounting
NOTE:
Do not use the supplied screws to mount the bracket to the bottom of the MMX-6-USB
if the device will be mounted on a DIN rail. Removing the MMX-6-USB from the DIN rail is not
possible.
DO
Connect the Device
Make the necessary connections as called out in the illustration that follows. When making
connections to the device, use Crestron
®
power supplies for Crestron equipment. Apply power
after all connections have been made.
NOTE:
The AUDIO OUTPUT and USB ports can be connected simultaneously.
DO
Check the Box
QTY PRODUCT
COLOR
PART NUM.
1
Power Pack, 12 Vdc 0.5 A, 100-240 Vac
2045884
1
Bracket, Mounting, Plastic
Black
4522294
1
Cable, USB 2.0, A - Mini B, 15’ (5 m)
2035913
6
Connector, 3-Pin
2003575
1
Connector, 5-Pin
2003577
2
Screw, 06-32 x 3/8", Pan Head, Phillips
Black
2007225
USB:
To USB audio device
Ground
INPUT:
From microphones (x6)
AUDIO OUTPUT:
To analog audio
input
12V 0.5A:
From AC
power pack
Microphone
bus assignments (x6)
L = left; R = right; + = L & R
Output master
low cut filter
Output master
level control
Bi-color input
channel level
indicators (x6)
Input channel
level controls (x6)
Output master
level indicator
