Sonifex CM-CU21, User Handbook Manual

Page: 16 / 32

6
CM-CU21 Commentator Unit User Handbook
CM-CU21 COMMENTATOR UNIT
FR
ONT P
ANEL C
ONTR
OLS & C
ONNEC
TIONS
3
3 Front Panel Controls & Connections
Fig 3-1: Front Panel View Of CM-CU21
The front panel of the Commentator Unit has all of the commentator inputs and
headphone outputs as well as the microphone power and gain controls.
Phantom Power Select Switches
Each of the three commentator inputs support phantom powered microphones. The two
main commentator positions have dedicated phantom power switches that enable the 48V
supply. The third commentator position has a three way switch that sets the input type.
When the switch is in the bottom position, the input is a line level input. With the switch
in the centre position, the input is for microphones not requiring phantom power. The top
switch position enables the microphone input phantom power.
Microphone Input Gain Controls
Each of the commentator microphone inputs has an individually adjustable gain setting.
The total gain range of +20dB to +86dB is split into two, to provide greater accuracy of
adjustment. The mic gain switch sets the base gain value of 20dB or +50dB for the
corresponding input. The associated mic gain potentiometer can then be adjusted to add
up to 36dB of additional gain.
Headphone Outputs
The front panel mounted headphone outputs are via ¼” stereo jack sockets. The two main
commentator positions have locking sockets to prevent the headphone plug from being
accidentally pulled out.
Microphone/Line Inputs
The microphone inputs for the two main commentators and the microphone/line level
input for the third position are via 3 pin female XLR-3 connectors with the following
connections:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase