16
DUAL/STEREO COMPRESSOR/NOISE GATE CN-220
CAUTION:
In Band Compressor mode, the headroom is more limited for what it is not advisable
overcome the 16 dB of output level when we operate with negative adjustment of the output
level control.
STEREO SWITCH
The stereo switch, allow us to select the unit working mode. With this switch
depressed, the unit operation mode is DUAL, this permit us the treatment of two
independent signals, adjusting each noise gates and compressor of independent
mode. Upon pressing the switch, the channel 2 will be slave of the channel 1, for what the
controls of the channel 2 will be disabled (except for the cases specified with the STEREO note:
TEST MONITOR SWITCH, ACTIVITY LED’s, HP AND LP KEY FILTER CONTROLS and BAND
COMPRESSOR SWITCH AND CONTROL, explained each one in their corresponding section).
NOTE:
In STEREO mode the signal that arrives to the noise gate and compressor detectors, is an
average of the two input signals.
SIDE CHAIN CONNECTOR
In the noise gate and compressor normal operation, the input signal is
used for the noise gate and compressor detector in order to carry out the noise
gate triggers and compress the same input signal. This ¼” stereo JACK
connector allow to use another signal (or the same input signal processed) in
order to trigger the noise gate and compress the input signal according to the adjusted
parameters.
In order to introduce a signal different from the input signal, we will use a ¼” mono JACK ,
with the signal in the tip.
If we want to process (equalise, expand, level change, etc.) the input signal, we will
connect a ¼” stereo JACK , and we will obtain the input signal the ring, and we will return to the
unit for the tip.
The external control JACK connector input and output are unbalanced.
The input impedance is 10 K
Ω
, and the output impedance is 220
Ω
. The input and output
SIDE CHAIN nominal level is - 3 dB.
NOTE:
In the Band Compressor mode, the external control is disabled.
6. OPTIONS
In this section will explain the different available options for the unit.
SECURITY COVER (TP-1)
In some installation, it could be necessary to tamper proof the front panel controls avoiding
unwanted or accidental manipulations. For this purpose, it is available as an option, a transparent
plastic security cover. The installation is very easy, by means of two screws provided.
KEY LOCKED SECURITY COVER (TS-1)
In some installations it is necessary isolate the compressor/noise gate controls more
securely than with the plastic security cover. For this extra protection, it is available an all-metallic
and lockable security cover. This option cover fits into the four rack holes of the unit and includes
rear nut-bars allowing the installation as a stand-alone unit.
