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4800/4820 User Manual
6.17 - Limiter Insert
The DriveRack 4800/4820 units offer a Limiter in the Output Insert position. A Limiter operates on the
same principles as a compressor (see section 6.14) but it is designed and used more for system protection
rather than musical dynamics control.
Limiter On/Off switch
This turns the Limiter module on and off.
OverEasy fader
OverEasy is a characteristic of dbx Compressor/Limiters is essentially a “soft-knee” function that occurs
about the threshold. On analog devices, OverEasy can only be turned on or off, but in the digital domain
this parameter can have a range. This parameter can be adjusted between 0 and 10 where 0 corresponds to
no OverEasy, and 10 correspond to a very wide soft-knee region.
Threshold fader
The Threshold is the signal level at which the unit begins to limit the signal. If the level is set to -10 dBFS,
then any signal larger than -10 dBFS is reduced in gain. The range of the Threshold fader is -60 to 0dBFS.
PeakStopPlus On/Off switch
This switch engages PeakStopPlus
®
and changes the Limiter from an RMS (Root Mean Squared) or aver-
aging limiter to a peak limiter. The difference between these two types of limiters is in the signal that is
being fed to the detection circuit or algorithm. The detector of an RMS limiter is “looking” at an average
signal, while a peak limiter “looks” at the instantaneous signal. An averaging limiter will be less responsive
and will not actually limit every peak where a peak limiter will.
PeakStopPlus Overshoot fader
In the DriveRack when PeakStopPlus is engaged the algorithm allows selection of how much a transient
signal will be allowed to pass the limiter threshold before it is stopped. This amount is the Overshoot.
Overshoot can be adjusted between 2 and 6dB.
Auto On/Off switch
Auto mode dynamically sets the Attack, Hold, and Release parameters in real time based on the incoming
signal. This switch turns the Auto mode on and off.
Detailed Parameters
Section 6
59
DriveRack
®