Meridian America Meridian 518 manual Operating 518 as a Control Unit Type, Selecting a source, Out

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Using 518 in Hi Fi Systems	15

Note 518 can be used with or without other Meridian equipment. When it is used as the main system control unit it is normally the ‘System Controller’ and operates exactly as described below. Systems including other Meridian control units like 562 or 565 or DSP speakers will always elect for 518 not to be System Controller and there are some functional differences.

Operating 518 as a Control Unit (Type 0)

Note Do not use 518 as a Control Unit if the system has a Meridian 565 or DSP loudspeaker. (Use Type 1)

Selecting a source

1.press Source until the input you require is indicated

2.release Source or

press a Source key on the Remote

Selecting a source will bring 518 out of Standby.

Adjusting the volume

To increase the volume

1.press , the right-hand volume key on the 518 or

press the top red key on the Remote

To decrease the volume

1.press , the left hand volume key on the 518 or

press the bottom red key on the Remote Control

As you adjust the volume setting, the display will change to show the cur- rent source and volume number. For example:

	CD	65	would indicate that you were listening to a Compact
			Disc at a volume setting of 65. The volume level dis-

played will count up or down and ranges from 1 to 99. Each step is 1dB.

Subjectively a volume increase of 9dB is equivalent to a doubling of loudness. Each volume number represents about a 11% change in loud- ness; nine steps to double loudness. In a traditional analogue preamplifier using a rotary volume control the mid-way position usually offers approximately unity gain – with full volume corresponding to around +20dBgain.

In 518 the unity-gain i.e. 0dB setting is at volume number 87. For normal to high-level listening you should expect volume numbers in the region 60 to 90. For this reason 518 starts at power-up with volume number 87.

Out

1. Press Out to cycle between the output word options.

The Out key is used to set the number of output bits. It is also used to set consumer or professional channel-status output format. The choices are:

16C, 18C, 20C, 22C, 24C, 16P, 18P, 20P, 22P, 24P

518 User Guide

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Contents 1992, 1993 Contents Simple rules for using Appendix 4 -Resolution EnhancementAppendix 2 Hints on Mastering 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?Overview as Resolution Enhancement Processor Type CD or LaserDisc playback improvementMeridian DSP speaker 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 soundWith the Remote Control Operation summaryMemory 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 forSetting up sources Choosing source logosVol. dB Changing the input for a source Choosing the Comms type for a source productChoosing the address of 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 QuantisationNoise Shaping with dither Dynamic RangePre and De-emphasis 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 Appendix 3 RS232 Handset FunctionsGoTo 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