Meridian Meridian 568 Manuale utente
Meridian 568 Digital Surround Processor
user guide
i
Preface
Meridian 568 Digital
Surround Processor
User Guide
Preface
ii
Sales and service in the UK
Meridian Audio Ltd
Stonehill
Stukeley Meadows
Cambs
PE18 6ED
England
Tel␣ ␣ (01480) 52144
Fax␣ ␣ (01480) 459934
World Wide Web
http://www.meridian-audio.com
Part no: 568
Sales and service in the USA
Meridian America Inc
3800 Camp Creek Parkway
Building 2400
Suite 122
Atlanta
GA 30331
Tel␣ ␣ (404) 344 7111
Fax␣ ␣ (404) 346 7111
Designed and
manufactured in the UK by
Digital Gramophone and Wireless Ltd
Stonehill
Stukeley Meadows
Cambs
PE18 6ED
England
Copyright © 1995–1999 Digital Gramophone and
Wireless Ltd.
Manufactured under license from Dolby
Laboratories Licensing Corporation (Canadian
patent 1,037,877), Lucasfilm Ltd. (US patents
5,043,970; 5,189,703; 5,222,059), Trifield
Productions Ltd, and Nimbus Records Ltd.
Dolby, Pro Logic, AC-3, and the double-D symbol
are trademarks of Dolby Laboratories Licensing
Corporation. Lucasfilm, THX, and THX Cinema are
registered trademarks of Lucasfilm Ltd. DTS is a
registered trademark of Digital Theatre Systems Inc.
MPEG is a registered trademark of the MPEG
organisation. Ambisonic is a registered trademark
of Nimbus Records Ltd. Trifield is a trademark of
Trifield Productions Ltd. LaserDisc is a trademark of
Pioneer Electric Corp. Boothroyd|Stuart Meridian,
Meridian, Meridian Digital Theatre, Meridian
Lossless Packing, and MLP are registered
trademarks of Meridian Audio Ltd.
MHR: This product incorporates copyright
protection technology covered by certain patent
applications and intellectual property of Meridian
Audio Ltd. This technology is provided for the
express purpose of securely containing copyright
audio within the Meridian System only. Reverse
engineering or circumvention of this protection is
strictly prohibited.
This guide was produced by Human-Computer
Interface Ltd, http://www.interface.co.uk
iii
Preface
Contents
Introduction 1
Introduces the digital surround processor,
and gives guidelines and suggested
layouts to help you plan your surround
system.
The 568 Digital Surround Processor ...... 2
Sample configurations ........................... 4
Specification and accessories ............... 6
DSP presets ........................................... 9
Using the digital
surround processor 13
Provides step-by-step instructions for
operating the digital surround processor,
using either the front panel or the Meridian
System Remote.
Front panel ............................................. 14
Meridian System Remote ...................... 15
Quick guide to operating the 568
with the remote ...................................... 16
Selecting a source ................................. 17
Adjusting the volume ............................. 19
Changing the DSP preset ...................... 20
Changing the display ............................. 21
Defining your own
presets 23
Describes how to change the built-in DSP
presets, and create your own presets.
Locking and unlocking the menus ......... 24
Changing the DSP parameters .............. 25
Standard parameters ............................. 26
Changing treble, bass, or phase ............ 27
Changing the listening position ............. 28
Changing the integration of the centre .. 30
Changing the spaciousness of the
sound ..................................................... 31
Changing the lip sync and on-screen
display .................................................... 32
Changing the DSP preset for a source .. 33
Preface
iv
Configuring the digital
surround processor
without a computer 63
Describes how to perform a basic
configuration of the digital surround
processor without requiring a computer.
Choosing a standard setting.................. 64
Standard source settings ....................... 66
Calibrating the system ........................... 67
Calibration tests ..................................... 70
Setting up subwoofers ........................... 74
Setting up the digital
surround processor 49
Describes how to unpack and install the
digital surround processor, and gives
details of the video and audio
connections.
Unpacking .............................................. 50
Positioning the digital surround
processor ............................................... 51
Connecting the digital surround
processor ............................................... 52
Connecting video ................................... 55
Connecting speakers ............................. 56
Connecting sources ............................... 59
Connecting to other Meridian
equipment .............................................. 62
DSP presets 37
Gives technical information about each of
the DSP presets, with details of the special
parameters available for each one.
Logic DSP presets ................................. 38
Music DSP presets ................................ 41
5.1 Movie DSP presets .......................... 46
v
Preface
Configuring the digital
surround processor
using a computer 77
Describes how to configure the digital
surround processor using the Meridian
Configuration program.
The Meridian Configuration program ..... 78
Installing the Meridian Configuration
program ................................................. 79
Creating a new settings file.................... 82
Setting up speakers ............................... 85
Setting up sources ................................. 90
Configuring presets ............................... 93
Changing the setup options................... 96
Calibrating the settings with your
system................................................. 98
Creating a User Type .......................... 100
Completing the configuration ............. 103
Troubleshooting 105
Provides suggested solutions to typical
problems.
General operating problems ............... 106
Audio problems ................................... 108
Video problems ................................... 111
Meridian Configuration program
problems ............................................. 112
Service and guarantee ........................ 113
Glossary 115
Index ................................................... 119
Preface
vi
Introduction
1
Introduction
The Meridian 568 Digital Surround Processor combines a completely digital
surround-sound processor with a high-performance digital preamplifier in a
single integrated unit. It takes advantage of the latest techniques in high-
precision analogue electronics and digital signal processing, and the result
is an impressively realistic and exciting reproduction of music and cinema
sound.
The 568 Digital Surround Processor accepts both analogue and digital
sources, and supports all the current two-channel and multi-channel audio
formats including PCM, Dolby Digital (AC-3), DTS, and MPEG. It also
includes several proprietary processing modes, including the MLP
(Meridian Lossless Packing) format.
For instructions on setting up the unit turn to Setting up the digital
surround processor, page 49. Once the digital surround processor has
been set up refer to Using the digital surround processor, page 13, for
information about getting the best results from all your music and film
recordings.
2
Introduction
The 568 Digital Surround Processor incorporates the result of
several years of research and development into several
innovative technologies.
Digital Signal Processing
Digital Signal Processing, or DSP, is a technique pioneered by
Meridian in hi-fi products for achieving extremely accurate
reproduction of audio signals using high-precision mathematical
processing.
DSP allows sophisticated processing to be performed without
any of the cumulative noise or degradation that inevitably
occurs, even with high-quality analogue circuitry. In addition,
several of the surround-sound decoding techniques and signal
improvement techniques available in the 568 would be virtually
impossible to implement in analogue circuitry.
The 568 takes advantage of DSP for several different functions:
❍To remove timing variations from the incoming digital signals
(de-jittering).
❍To expand the precision of the signal to use the full available
range.
❍To resample the signal to take advantage of the highest rate
available (upsampling).
❍To perform filtering or adjustment of the frequency response;
eg treble or bass.
❍To decode digitally-encoded signals from Dolby Digital (AC-3),
DTS, or MPEG Audio.
❍To process the audio into a multi-channel signal, and match
the source channels to the configuration of main loudspeakers
and subwoofers in the system.
The 568 converts analogue input signals to digital format, using
high-quality analogue-to-digital converters (ADCs). Digital
signals, from CD, DVD, LaserDisc or digital broadcasting, are
already in digital format and do not need to be converted.
The signals are then retained in digital form throughout the 568
until they are converted back to analogue form at the analogue
outputs, to drive power amplifiers. If you are using the 568 with
Meridian DSP Loudspeakers, the signals remain in digital form
until the last possible stage.
The 568 Digital Surround Processor
Introduction
3
Meridian High Resolution (MHR)
The 568 Digital Surround Processor supports Meridian High
Resolution (MHR), to allow you to connect to other MHR-
compliant Meridian products to take advantage of high-rate
audio sources, and provide the additional benefits of lower jitter
and improved sound quality on all sources.
MHR is a proprietary secure encoding format that uses
encryption and anti-copy methods to provide a secure copyright
protection environment, and allow the secure transfer of audio
streams within a Meridian-only system for playback only.
500 Series communications
The 568 Digital Surround Processor is part of the Meridian 500
Series of advanced digital, analogue, and video components,
and these incorporate a sophisticated communications link, to
allow you to control any combination of units using a single
remote, and ensure that they will work together as a fully
integrated system.
The communications system also allows you to extend your hi-fi
system into two or three rooms, with the ability to control the
sources in one room from the controller in another room.
The following pages show two recommended configurations
based on the 568 Digital Surround Processor to illustrate the
flexibility of the Meridian 500 Series.
Indice
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