Chameleon Labs 7720 - Manual (Page 4)

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Release:
This five position, switched control is used to adjust the release time of the
compressor, or how fast it will release a signal that has been processed by the
compressor. The five settings are 0.1 second, 0.3 second, 0.6 second, 1.2 seconds
and an auto selection that uses internal circuitry to adjust the release time based
upon the audio signal.
Ratio:
This four position, switched control is used to adjust the ratio of the dynamic
content of the original signal to the compressed signal. For example if the original
signal had a peak level of 4 dB and the ratio control was selected to 4:1, the output
signal would still maintain the dynamic change as in the original audio signal, but it
would only have a peak level increase of 1 dB. The ratio settings are 1.5:1, 2:1, 4:1
and 10:1.
Output:
This rotary pot control is used to adjust the audio level at the output of the
compressor. It has up to 20 dB gain, which can be used to raise the level of the
compressed audio signal back to nominal levels.
Non Stereo Application
In order to use the Model 7720 as mono compressor, you need only use the left channel
inputs and outputs. All functions are as normal.
Maintenance
A spare fuse is included with your optional CPS-24 power supply. It is located in the fuse
carrier just above the AC receptacle. To access the fuse, gently pry out the carrier with a
flat bladed screwdriver. The fuse is mounted in the clip and the spare is located is a small
channel behind the cover. Replace the fuse with the same type as supplied with your
stereo compressor.
There are no user serviceable parts inside the 7720 stereo compressor. Contact a
qualified maintenance professional if a problem occurs. This product carries a one-year
warranty.
TECHNICAL SPECIFICATIONS
Input impedance: 50K Ohms (Balanced)
Output impedance: 200 Ohms (Balanced)
Sensitivity: 20 dBu maximum at 1 KHz
Noise: Less than -80 dBu
Total Harmonic Distortion: <0.5% at 1 KHz, +4dBu
Maximum Output Level: 20 dBu
Frequency Response: 20 Hz – 20 KHz +/- 0.5 dB.