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Leveler Indicators
Each of the four sets of Leveler indicators are identical and display information on a particular
frequency band. These band are determined by the Unity AM’s crossovers which are user adjustable.
Each Leveler indicator has three sections. In the center, is a vertical meter showing the activity of the
15dB of RMS platform leveling by indicating how much the processor is increasing or decreasing the
audio above or below unity gain in the particular frequency band. The green bar at the center of the
meter illuminates to show the unity gain reference point of the processor. The green dots above the
bar indicate that the Leveler is increasing gain above unity and the red dots below the bar indicate that
the Leveler is decreasing gain below unity gain.
To the left of the meter are two red Gate indicators. These Gate indicators, one each for the left and
right channel, will light when the input level has dropped below the processing threshold. This
correlates to the meter returning to mid-scale indication and unity gain of the Leveler.
The Gate function operates exactly in the same manner as the procedure described above for the Wide
Band AGC section.
Note:
When operating in the Matrix mode for stereo, the left Gate indicator will indicate the status for
the L+R signal, and the right indicator will reflect the Gate operation for the L-R. Since most stereo
program content will contain more L+R signal than the L-R, it will appear normal if the L-R,
rightmost Gate indicators are in the GATED mode more often than the L+R indicators. Furthermore,
matrix processing will affect the action of the Leveler bargraghs. Since the bargraghs only indicate
the maximum processing action at any given moment, and the more predominant signal in the
processing matrix is the L+R signal, it is safe to say the bargraghs are indicating the processing action
of the L+R signal.
Limiter Indicators
On the right of each Leveler indicator, is a Limiter indicator that shows a 15dB indication of dynamic
peak limiting in that audio band. This meter starts at the center line of the Leveler display and the
meter illuminates downward to illustrate greater limiting activity.
