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
Application Note:
Adjustment of threshold might be desired in order to adjust compression depth. However,
the MLA-2 provides a more convenient adjustment in the form of Input Gain which has the
benefit of increasing compression depth with a clock-wise rotation. In addition, the audio
level does not fall as depth is increased.