MASELEC MLA-2
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4.6. VU / GR
This control switches the meter reading between:
vu Meter displays the output level.
g.r. Meter displays the average gain-reduction (dB).
4.7. Compressor in/out
This control switches the compressor, including input gain and output gain controls, in and out
of circuit.
out: Compressor by-passed. Meter displays input amplitude in VU mode.
in:
Gain-reduction (compressor) circuit is active.
4.8. Compressor indicator lamp
This bi-colour indicator indicates if the compressor’s gain reduction circuit is active:
Green Indicates that the compressor is in circuit (on).
Red
The colour changes to red when the input signal causes gain reduction.
This is particularly useful when the two channels are stereo linked, as the VU meters
will not show which channel is causing the gain reduction (dominating).
The light will also assist when the unit is located at a greater distance from the user.
4.9. Stereo linking
This switch enables the intelligent "Image-Link" system that matches the gain reduction
applied to both channels. The linking is programme dependant.
Momentary gain-reduction due to short duration peaks will not be linked.
This technique maintains the integrity of the stereo image, while avoiding obvious pumping
effects resulting from momentary transients on one channel.
The ImageLink system is independent of all other controls. Different ratio, attack and release
can be set to either channel.
4.10. Threshold range
This control is located on the rear panel and is designed to be pre-set at the time of
installation. It selects between two ranges, ‘Normal’ for studio use and ‘High’ for Mastering
use.
In the ‘High’ setting, for a given audio programme the depth of compression will be less.
The compression threshold is modified dynamically within these ranges by the MLA-2 control
circuitry, according to programme content.
Normal Threshold: Threshold range -10.5 dBu to +14.5dBu
High Threshold:
Threshold range -1.5dBu to +23.5dBu
