AVSL Citronic CL22 - Manual (Page 4)

Operation
With amplifiers turned down, power up the CL22 and set all controls to th e default position as follows…
Turn the EXPANDER/GATE THRESHOLD to “OFF”, Set COMPRESSOR THRESHOLD to “0” and ratio to “1” and OUTPUT to “0”.
The ENHANCER should be set to “OFF” and STEREO LINK set depending upon the configuration (stereo or dual mono setup)
Play the audio signal to be processed and gradually turn up the amplifier/recording device. Audio should now be heard unaffected.
Press the IN/OUT button in and increase the COMPRESSOR RATIO to the desired level (lower numbers are milder effect)
Bringin
g the COMPRESSOR THRESHOLD down from “0” should increase the amount of signal affected. Setting the THRESHOLD to -40dB
effectively compresses the entire signal, whereas higher THRESHOLD settings are classed as Limiting.
The amount of effect can be checked on the GAIN REDUCTION indicators and by pressing the IN/OUT buttons for comparison.
If MANUAL mode is selected, altering ATTACK and RELEASE will give different timing to the effect at the beginning and end of each triggered
compression. Alternatively, AUTO mode can vary this to suit the signal type automatically (e.g. vocals and drums will suit different settings)
If the GAIN REDUCTION indicators show a lot of compression, it is wise to gently increase the OUTPUT to compensate and bring the signal up
to t
he level required (this is known as “make-up gain”)
If the signal becomes “boomy” through heavy compression, high frequencies can be restored by turning up the ENHANCER PROCESS control.
To eliminate noise in silent passages, stop any audio passing through the CL22 and gradually turn up the EXPANDER GATE THRESHOLD.
Stop turning the THRESHOLD control when the background noise (hiss or hum) disappears. This process is gradual and may be adjusted so as
not to interfere with very quiet passages of wanted audio.
Remember to turn down amplifiers and switch off prior to powering down the compressor-limiter to avoid loud noises in the sound system.
SPECIFICATIONS
Power supply 115/230Vac 50/60Hz - selectable (IEC)
Connectors (Bal/Unbal) XLR or 6.3mm jack inputs and outputs L+R
Input impedance : Balanced 50k ohms
Input impedance : Unbalanced 25k ohms
Output impedance 60 ohms
Operating level +4dBu/-10dBV, switchable
Frequency response 20Hz to 20kHz (+0/-0.5dB)
Signal to noise ratio >95dBu
Crosstalk <100dB
THD 0.04% @ +4dBu 1kHz
Dimensions 44 x 482 x 180mm
Weight 3.2kg
TROUBLESHOOTING
No function and Power switch LED is not lit
Ensure mains voltage is correct (check selector) and connected properly
Ensure front panel power switch and mains outlet switch are on
Power is on but no audio output
Check XLR and jack leads are OK and connected properly
Check that OUTPUT controls are not turned fully down
Check that inputs and outputs are connected the correct way around
Check that LOW out is not connected to amp for mid-high cabs in error
Unplug jacks from DETECTOR LOOP to check if connected wrongly
Turn down EXPANDER/GATE THRESHOLD if set too high
Distorted output
Reduce OUTPUT controls
Check equipment connected to DETECTOR LOOP is not set wrongly
Check ENHANCER PROCESS control is not set too high
Make sure OPERATING LEVEL switches are set to the correct
“dB”
Output is very low level
Increase OUTPUT level
Increase COMPRESSOR THRESHOLD and reduce RATIO if too high
Check equipment connected to DETECTOR LOOP is not set wrongly
Make sure OPERATING LEVEL switches are set to the correct
“dB”
Note: for further troubleshooting, refer equipment to qualified service personnel for testing
© Citronic 2011