Meridian America Meridian 518 manual Meridian Surround improvement

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Overview of 518	11

Tuner

LP

CD Player	562
CD Player
LaserDisc
DAT

518

DSP

Speaker

DSP

Speaker

Using 518 with DSP Loudspeakers

As the diagram shows, a 518 can be placed between the 562 and the Meridian DSP speakers. In this case, the 518 is used – very much as it is for the earlier CD example – to provide further de-jittering and resolution enhancement. The Meridian DSP speakers can read 22 bits on the input and have analogue de-emphasis, so 518 can significantly improve the sound of this system.4

Because 518 does not pass on subcode, the time display feature on DSP5000 or DSP6000 becomes disabled. However the Meridian Comms system keeps the speaker updated on the current track number.

Meridian Surround improvement

The Meridian 565 is a world-beating surround decoder. One of its unusual features is the ability to accept digital signals directly to the DSP decoding. This means, for example, that the signal from a LaserDisc can be passed without the distortion of in-built (and often inferior) DACs and results in a substantially improved sound.

The Meridian 565 can drive DSP, active or conventional loudspeakers in any combination.

Tuner
LP
CD Player	562V	518	565
CD Player

LaserDisc

DAT

Using 518 with a 565 Digital Surround Processor

Whatever the output configuration, the 518 should be placed before the 565 Digital Surround Processor – so that the precision of the inputs (normally 16 bit) can be matched to the 20 bit input capability of 565.5

4Setup details: set 518 to Type 1. Set Out to 22 C.

5Setup details: set 518 to Type 1. Set Out to 20 C.

518 User Guide

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Contents 1992, 1993 Contents Appendix 2 Hints on Mastering Simple rules for usingAppendix 4 -Resolution Enhancement Acknowledgements Sales and service in the UKSales and service in the USA Designed & manufactured in the UK byConventions used in this manual IntroductionAbout this manual About the 500 SeriesConnections Installing yourGeneral precautions UnpackingWhats inside a 518? Planning setupOverview as Preamp Type What else do I need to know? What about analogue sources?Meridian DSP speaker improvement Overview as Resolution Enhancement Processor TypeCD or LaserDisc playback improvement Meridian Surround improvement Overview as Multimedia Processor Type Overview as Mastering Processor Type∙ Normal ∙ Standby ∙ Type ∙ Config Customising featuresStandby Switching onStarting off with Basic operationOut Adjusting the volumeOperating 518 as a Control Unit Type Selecting a sourceShape B DitherFlat Shape aDisplay Advanced operation using the Remote Control Menu Keys Operating 518 as Resolution Enhancer TypeVolume control Muting the soundMemory With the Remote ControlOperation summary Customising 518, an overview Restoring default settingsConfig an overview Config control settingsHow to change to Type or Config How to customiseCustomising, general procedure Config sources and inputsSetting Type Controller Customising using TypeHow to change back to Normal Making changes to an existing setupSelecting Types Customising using ConfigHow to use Config ConfigSetting the Standby mode for Selecting the controller modeSetting the system address for Setting the product address forSetting the Volume display Setting the Blank display option forSetting the Emphasis option for Setting the Volume mode forVol. dB Setting up sourcesChoosing source logos Choosing the address of a source product Changing the input for a sourceChoosing the Comms type for a source product Digital output connection ConnectionsDigital audio connections Digital input connectionsCon Connecting to Meridian Digital speakersCommunications connections To connect to other Meridian 500 Series equipmentMastering Processor PartD1 +2 DescriptionAs a Mastering or Multimedia Processor Type Meridian 500 Comms warningShpB +2 Emph +2Making Recordings Transfer to the final carrier Transfer to editorShaper Advantage 44.1kHz 48kHz Normal Pre-emphasis Noise shaper characteristicsDither Operating BackgroundTransparency in digital systems Digital Audio and QuantisationPre and De-emphasis Noise Shaping with ditherDynamic Range Step up in dynamic range Simple rules for usingStep-down in sample word size No change in sample sizeAdditional technical information SpecificationHelp Maintenance & Service CleaningNoise Part Appendix 1 Noise ShapesAbove noise spectrum for Shape B at 44.1kHz 0Hz 5kHz 10kHz 15kHz 20kHz Requirements for D/A conversion Vulnerability of the signalAudible results of digital errors and editing Appendix 2 Hints on Mastering with noise-shapingAppendix 2 Hints on Mastering GoTo Functions Appendix 3 RS232Handset Functions Jitter and de-jittering Appendix 4 -Resolution EnhancementFrequency Dynamic-rangeDynamic-range optimisation with Pre-emphasis Dynamic-range optimisation with GainShowing CD pre- and de-emphasis curves Dynamic-range optimisation with Noise-shaped Dither DAC or channel enhancement by word-length matching DAC enhancement by using high-frequency ditherIndex ContentsIndex User Guide User Guide