Meridian America Meridian 518 Introduction, About this manual, About the 500 Series, Radio

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Installation

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Introduction

The Meridian 518 Digital Audio Processor is part of the 500 Series of advanced high-fidelity equipment.

In purchasing a Meridian 518 Digital Audio Processor, you have acquired a refined piece of equipment that will continue to bring you listening pleasure for many years. This manual will enable you to get the most from it.

About this manual

Because the 518 is such a flexible item, we have divided this manual into three parts.

Part 1 gives an overview of 518 and gives 'how to use' information for the two common 'consumer' applications of Control Unit and Resolution Enhancement.

Part 2 is more technical and describes how to use 518 as a Mastering or

Multimedia Processor.

Part 3 gives more technical information in Appendices.

Conventions used in this manual

506. A number such as 506 refers to a component in the Meridian 500 Series of audio equipment.

Display. Whenever a key name is printed in bold typeface, it means that you should press this key. If the key name is not in bold type, it indicates that the course of action is not required at present, e.g. ‘if you want to change the display, press Display' means you can do this, but it is not essential as part of the operation currently being discussed.

Standby Italic form normally refers to the state of the 518. In some in- stances, a key and the status of the equipment share the same name, e.g. the Standby key and the Standby state.

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Displays are illustrated in this form.

1. Sequences of actions are given in numbered lists.

About the 500 Series

The Meridian 500 Series is a unique system of digital, analogue and video components designed to meet the demand for absolute quality, ease of use and lasting value.

The flexibility of the Meridian 500 Series is such that you can assemble a system as simple or as complex as you need, perfectly suited to your requirements, and with the ability to add to it or change it at a later date should those requirements change.

The Meridian 500 Series includes a sophisticated communications link, to ensure that any configuration of units will work together as a fully integrated system. The 500 Series communications system allows you to control any combination of units using a single handset, and ensures that your commands from the handset are interpreted unambiguously. Any unit can be designated as the controller for the system, allowing you to position the other units out of range from the handset beam if desired. It also allows all the units to be switched off from the front panel of any unit in the system.

518 User Guide

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Contents 1992, 1993 Contents Appendix 2 Hints on Mastering Simple rules for usingAppendix 4 -Resolution Enhancement Sales and service in the USA Sales and service in the UKDesigned & manufactured in the UK by AcknowledgementsAbout this manual IntroductionAbout the 500 Series Conventions used in this manualGeneral precautions Installing yourUnpacking ConnectionsWhats 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 featuresStarting off with Switching onBasic operation StandbyOperating 518 as a Control Unit Type Adjusting the volumeSelecting a source OutFlat DitherShape a Shape BDisplay Advanced operation using the Remote Control Volume control Operating 518 as Resolution Enhancer TypeMuting the sound Menu KeysMemory With the Remote ControlOperation summary Config an overview Restoring default settingsConfig control settings Customising 518, an overviewCustomising, general procedure How to customiseConfig sources and inputs How to change to Type or ConfigHow to change back to Normal Customising using TypeMaking changes to an existing setup Setting Type ControllerHow to use Config Customising using ConfigConfig Selecting TypesSetting the system address for Selecting the controller modeSetting the product address for Setting the Standby mode forSetting the Emphasis option for Setting the Blank display option forSetting the Volume mode for Setting the Volume displayVol. 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 audio connections ConnectionsDigital input connections Digital output connectionCommunications connections Connecting to Meridian Digital speakersTo connect to other Meridian 500 Series equipment ConMastering Processor PartAs a Mastering or Multimedia Processor Type DescriptionMeridian 500 Comms warning D1 +2ShpB +2 Emph +2Making Recordings Transfer to the final carrier Transfer to editorShaper Advantage 44.1kHz 48kHz Normal Pre-emphasis Noise shaper characteristicsTransparency in digital systems Operating BackgroundDigital Audio and Quantisation DitherPre and De-emphasis Noise Shaping with ditherDynamic Range Step-down in sample word size Simple rules for usingNo change in sample size Step up in dynamic rangeAdditional technical information SpecificationHelp Maintenance & Service CleaningNoise Part Appendix 1 Noise ShapesAbove noise spectrum for Shape B at 44.1kHz 0Hz 5kHz 10kHz 15kHz 20kHz Audible results of digital errors and editing Vulnerability of the signalAppendix 2 Hints on Mastering with noise-shaping Requirements for D/A conversionAppendix 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