Harman 4820 Detailed Parameters Limiter Insert, Limiter On/Off switch, PeakStopPlus On/Off switch

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DriveRackSection 6

®

Detailed Parameters

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.

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Contents 4800/4820 Importantsafetyinstructions Important Safety Instructions DriveRack Table of ContentsDriveRack DriveRack Features IntroductionDriveRack DriveRack 4800/4820 FeaturesWarranty DriveRackIntroduction Service Contact InfoIntroductionDriveRack Front panel Getting Started Rear Panel 4800/4820 Front Panel Getting StartedOuput Channel Select Input Channel Select A-DThreshold Meters RTA Input JackGettingStarted System Architect Features System Architect Control SoftwareMute Buttons Installation Minimum System Requirements for System Architect areRecommended System Requirements DriveRack Attributes Attributes DriveRack Philosophy DriveRack 4800/4820 PhilosophyNavigation Navigation Front Panel OperationModes of Operation Return to Edit mode by pressing the Preset button DriveRack While in Edit mode press and hold the UTILITY/METER button DriveRack DriveRack Module view SystemArchitectDriveRack4800/4820FileStorage Software Operation DriveRack PhilosophySystem Architect DriveRack 4800/4820 Philosophy Module ViewDevice Window Software OperationDevice File Menu Device View FeaturesDevice Edit Menu Device Tools MenuPreset Tool Device View MenuDevice Help Menu Mutes and Solos MetersVenue File Menu Venue ViewVenue View Menu SoftwareGUI SoftwareOp rationOverviewVenue Insert Menu Venue Tools Menu Venue Panel MenuVenue Help Menu Venue Window MenuDriveRack Front panel Use Press and hold the RTA/LOAD button to load the presetDriveRack Store the name by pressing the STORE/DELETE button DriveRack GUI Operation DriveRack DriveRack Detailed Input Mixer Detailed ParametersDetailed Parameters Input Router Selected Source SwitchFlat/Restore switch EQ On/Off switchFrequency switch Detailed Parameters Input Graphic EQDetailed Parameters Input 9-Band Parametric EQ Delay On/Off switch Detailed Parameters Input DelayDelay fader Units switchMaster Mute switch Detailed Parameters Output MixerChannels A-D Detailed Parameters Output Router Detailed Parameters OutputBandpassFilter/Crossover Detailed Parameters Output 6-Band Parametric EQ Detailed Parameters Output Delay AFS On/Off switch Mode switchClear Live and Clear All buttons Live Filter Lift switch Type switchDetector Highpass fader Sensitivity faderDetailed Parameters Automatic Gain Control AGC Insert AGC On/Off switchThreshold fader Target faderWindow fader Limiter Auto On/Off switchAttack fader Release faderAutoWarmth On/Off switch Detailed Parameters AutoWarmth InsertAmount fader Detailed Parameters Compressor Insert Compressor On/Off switchOverEasy fader Ratio faderHold fader Auto On/Off switchDetailed Parameters De-EsserInsert De-Esser On/Off switchFrequency fader Width faderGate On/Off switch Detailed Parameters Noise GateMax Attenuation fader PeakStopPlus On/Off switch Limiter On/Off switchDetailed Parameters Limiter Insert PeakStopPlus Overshoot faderDetailed Parameters Detailed Parameters Notch Filter Insert Notch On/Off switchDetailed Parameters SubHarmonic Synthesizer Insert SubHarmonic Synth On/Off switchSubHarmonic Level fader 24-36Hz Level faderUtilities Miscellaneous UtilitiesGains & Trims Sample RatePreset Range Access RightsUtilities Real Time Clock UsersDriveRack DriveRackAppendix AppendixDriveRack SpecificationsDriveRackAppendix Block Diagram Crossover Table Preset TableDigital I/O and Clocking Word Clock Termination ZoneControllerWiringandInstallation Zone Controller WiringZone Controller Installation AppendixDriveRack GND ZC-4 Wiring Diagram Factory Reset Information Factory ResetPower-Up Button Functions Hard Factory ResetOverview of TCP/IP Basics Ethernet NetworkingIP address SubnetConnecting the Computer Directly to the DriveRack Dhcp Dynamic Host Configuration ProtocolAssumptions Proxy Setup of a Simple Isolated Ethernet Network Using DhcpNetwork Considerations and Limitations Virtual Private Networks VPNNetworkTroubleshooting Software FirewallEthernet Link Copyrights AppendixDriveRack DriveRackAppendix 18-0353-B