Solid State Logic X-Logic Series Compressor/Limiter Controls, Expander/Gate Controls, D-3

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X-Rack Dynamics Module

D.3 Performance Specification

The following pages contain audio performance specification figures for the X-Rack Dynamics Module. No other Solid State Logic products are covered by this document and the performance of other Solid State Logic products can not be inferred from the data contained herein.

D.3.1 Measurement Conditions

For each set of figures on the following pages, the specific unit and test setup will be stated at the beginning of that section. Any changes to the specified setup for any particular figure(s) will be detailed beside the figures to which that difference applies.

D.3.2 Measurement References

Unless otherwise specified the references used in this specification are as follows:

•

Reference frequency:

1kHz

•

Reference level:

0dBu, where 0dBu ≈0.775V into any load

• Source impedance of Test Set:

50Ω

• Input impedance of Test Set:

100kΩ

•All unweighted measurements are specified as 22Hz to 22kHz band limited RMS and are expressed in units of dBu

•All distortion measurements are specified with a 36dB/Octave low pass filter at 80kHz and are expressed as a percentage

•The onset of clipping (for headroom measurements) should be taken as 1% THD

•Unless otherwise quoted all figures have a tolerance of ±0.5dB or 5%

•All measurements are made with the operating level switch set for +4dBu

D.3.3 Compressor/Limiter

 

Controls:

 

Ratio (slope)

Variable from 1 to infinity (limit)

Threshold

Variable from +10dB to –30dB

Attack Time

Normally auto sensing, switchable to 1mS

Release

Variable from 0.1 to 4 seconds

The XLogic Channel unit Compressor/Limiter has two modes of signal detection, Peak and RMS. As their names suggest these modes of detection either act on peaks of the incoming signals or on their RMS levels. This gives two very different modes of compression and limiting with Peak Mode giving far more dramatic compression characteristics.

D.3.4 Expander/Gate

 

Controls:

 

Range

Variable from 0 to 40dB

Threshold

Variable from –30dB to +10dB

Attack Time

Normally auto-sensing, switchable to 150µs

Hold Time

Variable from 0 to 4 seconds

Release Time

Variable from 0.1 to 4 seconds

The side chain signal can be sourced either from the signal feeding the dynamic or the external Key input. Filters and/or Equaliser can be inserted in the sidechain.

LED meters independently indicate amount of compression and expansion.

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Contents Page Page U N D V I S I O N Solid State LogicSolid State Logic Contents XLogic Warranty Repairs WarrantyOut of Warranty Repairs IntroductionElectrical Safety Warning Safety considerationsInstallation DefinitionsSafety Considerations Graphical SymbolsMains Supply and Phases Mains Isolation and Over-Current ProtectionMounting Rack InstallationAssembling the X-Rack Connection Exiting Display Mode Stand-alone ModeOperation Total Recall Saving Stores to Internal MemoryRack Installation and Operation AWS Remote ModeNavigating in the Setup menu Setup/MIDI ModeOption Display Setting OverviewSaving Setups to a Mac or PC sa Default Midi Controller MappingMidi m1 Midi Remote Channel ckRemote Mode re Write Protect Mode prTest Mode te Address Setting adTest LEDs tl Test Pots tpSet DIM Level d1 Show Version veBefore continuing see System Requirements overleaf Software Download and InstallationAn be downloaded from Rack Internal Links and Fuses Rack Connector DetailsMiscellaneous Rack Connector Details Mix Bus Link Environmental Specification Physical SpecificationPage MIC Section E Rack Mic Amp ModuleLine Section F A-1A-2 3 HF/LF Section GOutput Section H Measurement References Measurement ConditionsMicrophone Amplifier Performance A-3A-4 Instrument Input PerformanceLine Input Performance A-5 A-6 Connector DetailsB-1 Rack EQ ModuleFrequency Sections B-2 Curves PerformanceHF Band controls HMF Band controlsB-4 LMF Band controlsLF Band controls HF EQ Maximum Gain EQ AlignmentHMF EQ Maximum Gain LMF EQ Maximum GainB-6 LF EQ Maximum Gain‘Balance’ Adaptor B-7 B-8 Compressor/Limiter Section Rack Dynamics ModuleGate/Expander Section D-1D-2 D-3 Compressor/Limiter ControlsExpander/Gate Controls D-4 Dynamics AdjustmentsDistortion Compressor Law Compressor ThresholdGate Threshold 7 ‘Balance’ AdaptorD-6 Introduction Line Return ModuleOperation Rack Line Return ModuleE-2 Measurement Conditions Performance SpecificationMeasurement References Line Input PerformanceLine Input Calibration InformationLine E-4Line Connector DetailsInsert Send/Return E-5E-6 Overall width front and rear panels are offsetRack Master Module Master ModuleMix Section F-1Monitor Section Configuration Dim LevelExpansion Midi RemoteLevel Compensation Default Midi Controller Mapping600Ω Output Level Compensation F-3F-4 Mix Bus PerformanceRecord Bus Performance Meter Level Mix Level TrackingHeadphones Connector Details Ins Rtn, Ext, Mon, Alt MonIns Snd, Mix, Rec, Fol Mon F-6F-7 F-8
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