Lexicon DC-1 owner manual System Setup, Input Gain

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Installation and

Calibration

DC-1 Digital Controller

The DC-1 Setup menu allows you to customize the system defaults to suit a wide range of possible system configurations. Each of the five entries in the Setup menu will be discussed in detail in this section.

Select SETUP from the main menu to display the Setup menu. Use MENU

and to step the cursor through the Setup menu selections. Once an item is highlighted, pressing SELECT will display a sub-menu for that item. With the sub-menu displayed, MENU and once again highlight menu

items. Press SELECT, then use MENU and to adjust the settings of any item over its available range. Press DONE to exit any sub-menu; press DONE again to return to the Setup menu.

The DC-1 has eight analog stereo audio inputs, each of which can be associated with any of the five video and four digital audio inputs. Selecting Input Configuration from the Setup menu displays a sub-menu which lists these inputs and allows you to select them individually for adjustment. Each input has an identical parameter sub-menu. VCR 1 is shown below as an example.

For optimal performance, the unit must be driven to its full input level without overloading. Despite industry attempts at standardization, differ- ent sources have a wide range of output levels. To compensate for this, each of the eight DC-1 analog inputs can be assigned a different input gain, assuring optimum performance and consistent volume, regardless of the source. For use with a calibration tone, the Dolby reference point is indi- cated by an enlarged tick mark on the on-screen level meters.

The DC-1 has an auto level function which monitors the analog input level and automatically optimizes the input gain (AUTO). When activated, this feature controls the input gain. If the signal level is too high and causes an input overload, input gain is automatically decreased to a point which does not cause an overload. When the signal level remains low (>12dB below clipping for 2.5 minutes), the input gain is incremented in 1dB steps to maximize dynamic range.

System Setup

Input Configuration

Input Gain

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Contents DC-1 Acknowledgements Important Safety InstructionsCommunications Notice Vigtig information om sikkerhed Wichtige Sicherheitsanweisungen DC-1 Contents Contents, contd Introduction Introduction to the DC-1 About Dolby Digital AC-3 encoding Introduction to the DC-1 Unpacking and Inspection Using the Documentation Glossary of Terms DC-1 Block Diagram Display Controls IndicatorsFront Panel ZONE2 and Record Power On/OffRear Panel OFF and on Remote ControlMute MenuSignment Cleared Remote Control Accy FunctionsLocation Considerations AC Connections ConnectionWire Lengths Wiring ConsiderationsAudio/Video Connections Length AWG SizeConnecting DC-1 as a preamp Installation Calibration LD/DVD Players AC-3 Ready Laser DiscRECORD/ZONE 2 Operation Zone 2 Remote Control Zone 2 IR Remote Mode EnabledExclusive Zone 2 Control System Configuration Video Input Selection On-Screen Display Video On-Screen DisplayInput Gain System SetupInput Name Restore Input Name Effect Non AC-3 Effect BaseDolby Digital Digital Audio Input Assignment Center Setting the Speaker ConfigurationFront L/R Subwoofer Output Setting Output Levels Subwoofer Peak Limiter Dolby Digital versionMute Level Power On Volume Zone 2 Volume Time Alignment Dolby Digital version Setting Listener PositionBase and THX versions Center DelayCalibrate Panorama Installation Calibration Settings are Locked Bass and Treble Level Equalization THX and Dolby Digital versionsTilt Dolby Digital version Customizing Effects DC-1 EffectsDC-1 Effects Music Surround Parameters Music Surround THX and Dolby Digital versionsParameter Initial Value Range Pro Logic ParametersTHX Cinema Parameters THX Cinema THX and Dolby Digital versionsLogic 7 Parameters Logic 7 THX and Dolby Digital versionsDC-1Effects TV Matrix Parameters TV MatrixDC-1Effects Mono Logic Parameters Panorama Parameters PanoramaDC-1 Effects Nightclub Parameters NightclubConcert Hall Parameters Concert HallChurch Parameters ChurchCathedral Parameters CathedralMusic Logic Parameters Music LogicDC-1 Effects Two Channel PartyTwo Channel Parameters Party ParametersAC-3 Status Display Dolby Digital version Music Parameters Music Dolby DigitalDolby Digital Parameters Dolby Digital Dolby Digital versionTHX 5.1 Parameters THX Dolby Digital versionLogic 7 Dolby Digital version DC-1Effects 1Two Channel Dolby Digital version Problem TroubleshootingProblem Possible Cause and Solution TroubleshootingRoutine Maintenance Restoring Defaults TroubleshootingSpecifications OSD Position Speaker Configuration circle selectionDisplay Time Listener Position PanoramaLexicon, Inc Oak Park