AUTOCOM PRO MDX1400
2.2 Compressor Section
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Fig. 2.3: Control elements of the compressor section
The THRESHOLD control sets the threshold point for the compressor section. It has a range of
The RATIO control determines the ratio between the input and output level for all signals exceeding the threshold point. If the INTERACTIVE mode is used, this control determines the ratio between input and output levels for signals exceeding the threshold point by more than 10 dB. The control range can be adjusted from 1:1 to oo:1.
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The ATTACK control determines the rate by which the compressor responds to the signal which exceeds the threshold. This control can be adjusted from 0.1 to 200 milliseconds.
The RELEASE control determines the rate that the compressor returns to unity gain after falling below the threshold level. This control can be adjusted from 0.05 to 4 seconds.
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By activating the AUTO switch, the ATTACK and RELEASE controls are disabled and the attack and release rates are automatically derived from the program material. This function allows for unobtrusive musical compression of signals or mixes with widely varying dynamics. Only if set to “MANUAL” the settings of the attack and release controls will function.
The OUTPUT control allows for the increase or decrease of the output signal by a maximum of 20 dB. Thus, a level loss due to the compression or limiting process can be compensated for.
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When activated, the SC EXT switch severs the connection between the audio input and the sidechain path, whilst at the same time allowing an external signal to be sourced at the SC RETURN jack on the rear panel.
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Using the SC MON switch will enable you to connect the sidechain control signal to the audio output, whilst at the same time muting the audio input. This function provides you with the ability to monitor the sidechain signal that is returned via inserted equalizers or other external processors. The SC MONITOR function will assist you with tuning equalizer parameters for example.
+Please note when the SC MON switch is engaged, the audio processing facility of the respec- tive channel is disabled. When this function is active, a visual indication will be provided by the switches LED, which will blink.
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The IN/OUT switch activates the corresponding channel. This switch acts as a
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Press the INTERACTIVE switch to change from “hard knee” to IKA characteristics. IKA provides a very subtle and musical compression of the program material and should therefore be used whenever compression is expected to be more or less inaudible.
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