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The earth has to be connected!
If the device will be directly connected with the local power supply network, a disconnection switch with a
minimum opening of 3 mm at every pole has to be included in the permanent electrical installation.
The device must only be connected with an electric installation carried out in compliance with the IEC-
standards. The electric installation must be equipped with a Residual Current Device (RCD) with a maximum
fault current of 30 mA.
INSTALLATION
RACK MOUNTING
The compressor is built for 19" racks/483 mm. The minimum mounting depth is 160 mm. The height is 44
mm. You can fix the compressor with four screws M6 in the rack.
When mounting the compressor into a rack, please make sure that there is a proper air circulation.
Please make sure that there is enough space around the device so that the heated air can be passed on.
The rack should be provided with a cooling fan.
Be careful when mounting the compressor into the rack. Put the heaviest devices into the lower part of the
rack. Be aware that fastening the compressor with four screws on the front panel is not enough. In order to
ensure safety, additional fastening by using ground and side bars is necessary.
If racks are to be transported or used for mobile use, additionally fasten the devices by connecting the rear
brackets with the side or ground bars of the rack. In this way, the compressor cannot be pushed backwards.
The front panel alone is not designed to absorb acceleration forces occuring during transportation.
STARTING UP
Make sure to power-up before your power amplifier is turned in order to avoid loud transients which could
damage your speakers or annoy your audience.
OPERATION
Front panel
Channel A and Channel B are identical.
1. POWER Switch
Turns power to the compressor on and off. Be sure to power-up before your power amplifier is turned on to
avoid loud transients which could damage your speakers or annoy your audience.
GATE-SECTION
A noise gate is a signal processor that turns off or significantly accentuates the audio signal passing through
it when the signal level falls below a user adjustable threshold.
2. GATE LED
This LED lights up when GATE is on processing and thus no signal comes in. As soon as singals are
passing through, the LED turns off.
3. THRESHOLD Control
Use the Threshold-Control to determine the threshold point below which expansion occurs. The range of this
control is from -45 dB(OFF) to +10 dB. Signals above this threshold value pass unaltered. Adjust this control
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