Meridian | 568.2 | User guide | Meridian 568.2 User guide

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Meridian 568.2 Digital Surround Processor
Meridian 568.2 Digital
Surround Processor
User Guide
Preface
i
Sales and service in the UK
Meridian Audio Ltd
Stonehill
Stukeley Meadows
Sales and service in the USA
Cambs
PE29 6EX
Meridian America Inc
England
3800 Camp Creek Parkway
Building 2400
Tel (01480) 445678
Fax (01480) 445686
Suite 122
Atlanta
GA 30331
World Wide Web
http://www.meridian-audio.com
Preface
ii
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
Meridian Audio Ltd
Stonehill
Stukeley Meadows
Tel (404) 344 7111
Cambs
Fax (404) 346 7111
PE29 6EX
Part no: 568.2/1
Copyright © 2002 Meridian Audio Ltd.
Designed and
manufactured in the UK by
England
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
Contents
Introduction
1
Introduces the digital surround processor,
and gives guidelines and suggested
layouts to help you plan your surround
Using the digital
surround processor
13
system.
Provides step-by-step instructions for
The 568.2 Digital Surround Processor ..... 2
operating the digital surround processor,
Sample configurations ............................. 5
using either the front panel or the Meridian
Specification and accessories ................. 7
System Remote.
Defining your own
presets
23
Describes how to change the built-in DSP
DSP presets ............................................. 9
Front panel ............................................. 14
presets, and create your own presets.
Meridian System Remote ...................... 15
Quick guide to operating the 568.2
Locking and unlocking the menus ......... 24
with the remote ...................................... 16
Changing the DSP parameters .............. 25
Selecting a source ................................. 17
Standard parameters ............................. 26
Adjusting the volume ............................. 19
Changing treble, bass, or phase ............ 27
Changing the DSP preset ...................... 20
Changing the listening position ............. 28
Changing the display ............................. 22
Changing the integration of the centre .. 30
Changing the spaciousness of the
Changing the DSP preset for a source .. 33
Preface
sound ..................................................... 31
Defining your own presets ..................... 34
iii
Changing the lip sync and on-screen
display .................................................... 32
DSP presets
37
Gives technical information about each of
parameters available for each one.
Setting up the digital
surround processor
Logic DSP presets ................................. 38
Describes how to unpack and install the
Music DSP presets ................................ 42
digital surround processor, and gives
5.1 Movie DSP presets .......................... 47
details of the video and audio
Multi-channel presets ............................ 51
connections.
the DSP presets, with details of the special
53
Configuring the digital
surround processor
without a computer
67
Describes how to perform a basic
Unpacking .............................................. 54
configuration of the digital surround
Positioning the digital surround
processor without requiring a computer.
processor ............................................... 55
Connecting the digital surround
Choosing a standard setting .................. 68
processor ............................................... 56
Standard source settings ....................... 70
Connecting video ................................... 59
Calibrating the system ........................... 71
Connecting speakers ............................. 60
Calibration tests ..................................... 74
Connecting sources ............................... 63
Setting up subwoofers ........................... 78
Preface
Connecting to other Meridian
iv
equipment .............................................. 66
Configuring the digital
surround processor
using a computer
81
Describes how to configure the digital
surround processor using the Meridian
Configuration program.
Troubleshooting
109
The Meridian Configuration program ..... 82
Provides suggested solutions to typical
Installing the Meridian Configuration
problems.
program ................................................. 83
Creating a new settings file .................... 86
General operating problems ................ 110
Setting up speakers ............................... 89
Audio problems .................................... 111
Setting up sources ................................. 94
Video problems .................................... 114
Configuring presets ............................... 98
Meridian Configuration program
Changing the setup options ................. 101
problems .............................................. 115
Calibrating the settings with your
Service and guarantee ......................... 116
system .................................................. 103
Creating a User Type ........................... 105
Glossary ............................................... 117
Completing the configuration .............. 108
Preface
Index .................................................... 121
v
vi
Preface
Introduction
The Meridian 568.2 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 568.2 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
supports discrete multi-channel sources, allowing direct connection to
DVD-Audio players such as the Meridian 598.
surround processor, page 53. 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.
Introduction
For instructions on setting up the unit turn to Setting up the digital
1
The 568.2 Digital Surround Processor
The 568.2 Digital Surround Processor incorporates the result of
This allows the 568.2 to upsample the audio stream if possible
many years of research and development by Meridian into
and process the signals at a higher rate, giving improved audio
several innovative technologies, including Meridian’s MHR
performance.
Smart Link.
Intelligent stream content information
MHR Smart Link
The 568.2 Digital Surround Processor can be supplied with an
optional multi-channel input card, which provides a proprietary
multi-channel input called the MHR Smart Link. This is the
recommended way of connecting together a Meridian 568.2
Digital Surround Processor and a Meridian 598 DVD-Audio
Player when used together in a system, allowing the two units to
operate together in a fully integrated way.
The MHR Smart Link transfers six encrypted digital audio
channels directly from the 598 to the 568.2, together with
intelligent stream content information from the source, providing
Introduction
several significant features and benefits over other methods of
connection.
Upsampling
The 598 can be configured to decode encoded audio streams
internally, and send out digital audio on the MHR Smart Link.
2
With a conventional digital connection between a DVD-Audio
player and a digital surround processor, the surround processor
cannot identify whether the source material is music or a movie
soundtrack, requiring the user to manually select an appropriate
DSP preset depending on the type of source material.
The MHR Smart Link carries intelligent stream content
information from the DVD-Audio player, and this includes
information about the source material, such as the encoding on
the disc. The 568.2 can use this information to select a suitable
DSP preset, such as Trifield for two-channel music or PLII Movie
for a two-channel movie soundtrack. The MHR Smart Link even
allows the 568.2 to select the appropriate preset if you change
audio streams within a disc, or play a disc containing several
different types of audio material.
Enhanced source
To use this feature of the MHR Smart Link you simply identify
one multi-channel source as the enhanced source. For this
source you can then specify seven different presets to handle
the alternative types of audio stream. Three of these presets are
for traditionally encoded streams: Dolby Digital, DTS, and
MPEG. The remaining four presets are specifically for the
different types of audio stream available over the MHR Smart
Link.
The 568.2 standard Types set the DVD source as the enhanced
source and assigns presets as shown in the following table:
Multi-channel presets
The 568.2 is provided with two alternative multi-channel presets:
Discrete and Cinema. Discrete is intended for use with music
material. Cinema is a user preset based on Discrete but with
settings more appropriate for movie material.
Subwoofer configuration
The intelligent stream content information provided by the MHR
Smart Link also allows the 568.2 to choose an appropriate
Stream
Description
Default preset
Music 2
Two-channel music material
Trifield
such as from a CD.
Music 6
Multi-channel music from a
Discrete
subwoofer configuration depending on the stream content: the
Music layout for Music 2 and Music 6 DSP presets, and the 5.1
Movie layout for Movie 2 and Movie 6 DSP presets.
Meridian High Resolution (MHR)
DVD-Audio disc.
Movie 2
Two-channel audio streams
PLII Movie
from a DVD-Video soundtrack.
A decoded multi-channel
Resolution (MHR), to allow you to connect to other MHRcompliant Meridian products to take advantage of high-rate
Cinema
DVD-Video soundtrack.
audio sources, and provide the additional benefits of lower jitter
and improved sound quality on all sources.
You can change any of these presets using the Store key; for
MHR is a proprietary secure encoding format that uses
more information see Changing the DSP preset for a source,
encryption and anti-copy methods to provide a secure copyright
page 33.
Introduction
Movie 6
The 568.2 Digital Surround Processor supports Meridian High
3
protection environment, and allow the secure transfer of audio
streams within a Meridian-only system for playback only.
500 Series communications
The 568.2 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
Introduction
based on the 568.2 Digital Surround Processor to illustrate the
4
flexibility of the Meridian 500 Series.
Sample configurations
Meridian Compact Theatre™
M33
M33 rear
M33 rear
M33
598
M33
M1500
568.2
The 568.2 Digital Surround Processor can connect directly to up
with the M33 Active Analogue Loudspeaker and M1500 Active
to eight Meridian active loudspeakers, allowing you to create a
Subwoofer. The M33 provides an unusually good response for
5.1 or 7.1 analogue theatre ideal for superb music and cinema
such a compact case, and can be mounted either horizontally or
sound in the home.
vertically for total flexibility.
Introduction
The Meridian 568.2 Digital Surround Processor is ideal for use
5
Meridian Digital Theatre™
DSP6000
DSP6000
DSP5000C
DSP33 side
DSP33 side
DSP33 rear
DSP33 rear
504
Introduction
598
6
568.2
The 568.2 Digital Surround Processor can be used with two
multi-channel reproduction from music and film sources. The
Meridian DSP6000 Digital Loudspeakers, and a DSP5000C
Meridian 598 DVD Player is an ideal source for use with the
Digital Centre Loudspeaker, to provide audiophile-quality sound.
568.2. It allows you to play DVD-Audio, DVD-Video, and audio
A further two or four DSP33 Active Digital Loudspeakers can be
CDs, and connects six discrete channels to the 568.2 using
added as side or rear loudspeakers to give extremely convincing
Meridian’s MHR Smart Link.
Specification and accessories
Specification
Digital outputs
4 x stereo SPDIF on cable, 75Ω, up to
24-bit precision.
Digital inputs
4 x cable, 75Ω, IEC958 and data
compatible, up to 24 bits.
1 x optical, Toslink (EIAJ), IEC958 and
Tape outputs
1 x digital bypass.
Video circuit
1 x composite video loop with
on-screen display: phono, 75Ω,
data compatible, up to 24 bits.
Analogue inputs
1.5V p-p, PAL/NTSC/SECAM.
2 x unbalanced, 20kΩ input
1 x S-video loop with on-screen
impedance.
display: Y/C on minidin, 75Ω,
1.5V p-p, PAL/NTSC/SECAM.
1 x stereo 24-bit Delta-Sigma ADC.
Optional input
1 x MHR Smart Link connection; see
Control
MHR Smart Link, page 2.
Analogue outputs
9-pin D connector for RS232 PC setup
and control.
4 x stereo 24-bit Delta-Sigma DAC.
8 x unbalanced outputs for centre, sub,
rears, mains, and sides or subs.
3 x balanced outputs for mains and
Outputs variable between 0 and
3.5Vrms, output impedance 47Ω.
Distortion <0.01%.
Processing
2 x Motorola 56002 running at 66MHz.
2 x Motorola 56367 running at
150MHz.
1 x Motorola 56007 running at 82MHz.
Internal precision maintained using
24-bit and 48-bit arithmetic.
Introduction
centre.
2 x Meridian Comms.
Noise and hum <-95dB CCIR.
7
Dimensions
321mm x 88mm x 332mm
(12.7" x 3.5" x 13.1") (W x H x D).
Weight
5kg (10lb).
Meridian 519 Demodulator
To take advantage of Dolby Digital on LaserDisc you need the
Meridian 519 Demodulator, which converts the LaserDisc
RF output to a bitstream which can be fed to the 568.2. The
Meridian Audio reserves the right to amend product
519 Demodulator automatically senses the presence of a Dolby
specifications at any time.
Digital signal, and can select the LaserDisc PCM or DTS digital
audio output when no Dolby Digital signal is available.
Available accessories
Fan kit
The following accessories are available from your dealer.
Introduction
Meridian 511 S-patch Box
8
A Fan kit is available for the 568.2 to provide additional
ventilation if the unit is installed in an enclosed space.
Provides a convenient way to interconnect the S leads between
The fan can be programmed using the Meridian Configuration
up to eight Meridian DSP digital loudspeakers. It is required if
program so that it either runs when the 568.2 is out of standby,
your 568.2 system includes more than two DSP loudspeakers.
or when the temperature rises above the recommended level.
Meridian 513 Smart Link patch box
Rack mount kit
Connects a Smart Link SVGA lead to three phono leads,
The Meridian 500 Shelf is a tray produced by Middle Atlantic
allowing the 568.2 to be connected to a Meridian 800 Reference
Products which will allow the 568.2, or any other 500 Series unit,
DVD/CD Player.
to be fitted in a standard 19" rack. For more information please
contact Middle Atlantic Products, Inc., Riverdale, NJ 07457,
USA, (001) 973-839-1011, or their local distributor.
DSP presets
The digital surround processor provides an extremely
comprehensive range of digital signal processing options for
decoding both analogue and digital audio signals and
processing them for multi-channel reproduction. These are
referred to as DSP presets, and are designed to provide the best
results with a range of different types of music and film material.
In addition to selecting built-in DSP presets, the digital surround
processor allows you to create your own presets based on the
standard ones. For example, you may want to add more delay to
the rear speakers to create a more spacious sound. You can
store your modified preset with a name of your choice, and
recall it for use at a later date.
This section gives information about each of the built-in DSP
presets, and gives recommendations for the best preset to
choose for different types of material.
Discrete multi-channel sources
Ambisonics B format
Ambisonics B format contains four independent channels of
information to give a three-axis representation of the sound at
the recording position. The signals are: mono sound pressure,
left-right velocity component, front-back velocity component,
and up-down velocity component.
Multi-channel digital sources
Several alternative multi-channel digital formats are currently
available which encode up to six different channels onto a digital
signal. Three alternatives are currently in use: Dolby Digital, DTS,
and MPEG Surround. However, the 568.2 has been designed so
that it can be upgraded by downloading a software update, to
cater for new formats as they are introduced.
Dolby Digital
Dolby Digital, previously called AC-3, is the preferred sound
Some DVD-Audio discs provide up to six discrete channels, and
LaserDisc soundtracks. It is also the audio standard for US
when used with a suitable DVD-Audio player such as the
digital television.
Meridian 598 DVD Player, these channels can be connected
separately to the 568.2 for subsequent processing.
Introduction
format for DVD in NTSC territories, and is widely used on
9
DTS
THX Surround EX and Meridian EZ
DTS uses an audio compression technique to encode five
THX Surround EX allows 5.1-channel film soundtracks to be
channels of audio onto a digital signal. The DTS format is used
encoded with an extra surround channel to give improved
to encode multi-channel film soundtracks on LaserDiscs and
surround imaging with four surround speakers. Meridian EZ
DVD-Video discs.
provides an alternative for THX Surround EX encoded material,
and can also be used to give improved surround imaging with
In addition, a high data-rate version of DTS can be used to
DTS ES encoded material.
compress five channels of CD-quality audio into the same space
to provide over an hour of five-channel music.
Multi-channel sources encoded onto
two channels
MPEG Surround
Several systems have been developed for encoding multi-
as two channels of unencoded sound, allowing a DTS music CD
MPEG Surround is the preferred audio format for DVD in PAL
territories, and along with Dolby Digital is a contender as the
standard for music and performance videos on DVD worldwide.
Introduction
THX
10
channel sources onto a standard two-channel analogue signal
so that they can be reproduced by a conventional stereo
system, or decoded with special equipment for multi-channel
reproduction. The 568.2 Digital Surround Processor provides
decoding of the two most important of these, Ambisonic and
Dolby Surround. Although the channel separation cannot be as
THX versions of Dolby Digital, MPEG Surround, and DTS are
good as with the digital multi-channel formats, the 568.2
provided to give a better match between the original soundtrack
produces excellent results with these formats.
and typical domestic listening conditions.
Pro Logic II
Dolby Pro Logic II is a decoding algorithm designed for twochannel sources, whether or not they are encoded for Dolby
Surround. It re-creates 5.1 channel movie surround from the
two-channel source, using improved decoding techniques that
preserve the directness of the sound field, resulting in enhanced
image stability compared with standard Pro Logic decoding.
Pro Logic
Pro Logic is Dolby’s original processing mode for decoding
Ambisonics UHJ
Ambisonics UHJ decodes material specifically encoded for
surround sound reproduction, using a two-channel stereocompatible encoding. Recordings encoded in UHJ format are
available on CD from several sources including Nimbus Records
and York Ambisonics. Some radio broadcasts are also
broadcast in Ambisonics format.
Dolby Surround encoded video and LaserDisc soundtracks, and
films on television. Such materials are usually identified by a
Conventional stereo sources
Dolby Surround symbol on the packaging, or displayed on the
film before the programme.
The digital surround processor can also accept a conventional
two-channel source, such as music on compact disc or a video
TV Logic
TV Logic provides user-adjustable steering, and is
recommended for use with TV broadcasts that are not surround
encoded, where Pro Logic may give reduced intelligibility.
PLII THX and THX Cinema
separate the two-channel recording into multiple channels to
give better reproduction and a more stable spatial image.
Four alternative DSP presets are provided for reproducing
material originally designed for a conventional stereo pair of
speakers, and which preset you choose largely depends on your
own personal preferences.
replicate the sound of a dubbing stage or theatre, whether or not
the other equipment in your system is THX approved.
All four presets use similar procedures to extract the surround
component of the original recording, which is delivered to the
Introduction
PLII THX and THX Cinema enhance Pro Logic II and Pro Logic to
soundtrack, and by analysing the information in the signal
rear surround speakers, and side surround speakers if present.
11
Music
Music uses a special technique developed by Meridian to divide
the sound between the left, right, and centre speakers and give
a wide, spacious sound. We recommend this option for largescale music, such as orchestral and choral music.
Trifield
Trifield uses a different processing technique to give a stable,
three-dimensional image, with the ability to adjust the width of
the image. Because of its precision we recommend this option
for solo, chamber, or vocal music.
Super Stereo
Super Stereo provides a form of Ambisonic decoding suitable for
Special DSP presets
The digital surround processor also includes the following
special DSP presets, for specific applications:
Mono
The Mono preset is designed for reproducing mono materials
through a centre speaker, so that any high-frequency hiss or
clicks are centrally localised. It is intended for mono recordings,
and multi-language LaserDiscs and video soundtracks.
The Mono preset includes an Academy option, designed to
correct for a high-frequency balance in some old black and
white films, and a Party option, which plays the mono signal
through all loudspeakers.
material that is not specially encoded. We recommend this option
Introduction
for multi-miked or multi-tracked music, such as rock music.
12
PLII Music
Stereo and Direct
Stereo and Direct are provided for comparison with the other
DSP presets. Direct uses just the main left and right speakers for
PLII Music uses the Pro Logic II DSP processing mode to
traditional two-speaker stereo reproduction. Stereo, in addition,
decode music sources, and provides for user-adjustable
uses any subwoofers in the layout to enhance the bass or to
steering to give an exciting sound with many types of music. We
protect small speakers.
recommend this option for studio-produced music, ie material
not produced using natural soundfield recording.
Using the digital
surround processor
This chapter provides a summary of the functions of the digital surround
processor to identify the controls which you use to operate the unit.
processor, using either the front panel or the Meridian System Remote.
Using the digital surround processor
It also provides step-by-step instructions for operating the digital surround
13
Front panel
1 Source
Selects the source.
2 Store
Changes the DSP preset
Display
assigned to a source.
3 Preset
Changes the preset.
BOOTHROYD STUART
Digital
Using the digital surround processor
568.2
14
Source Store Preset
Digital Surround Processor
Mute Display
V
65
A
Off
4 Mute
5 Display
Changes the information
displayed on the front panel.
6 V Decrease
Decreases the volume.
1
2
3
4
5
6
7
8
7 A Increase
Increases the volume.
8 Off
Switches to standby.
Meridian System Remote
1
2
3
1
Source keys
Select a source.
2
Control keys
Control the source functions.
3
RADIO
LP
TV
1
2
3
4
5
6
TAPE 1
TAPE 2
CDR
CABLE
DVD
VCR 1
VCR 2
Switches to standby.
LD
4
Angle
7
8
9
Audio
OSD
[ Page
Slow/Page ]
Return
Enter
Repeat
Off
Phase
Record
A-B
Subtitle
Store
Menu
Clear
Accesses additional functions.
5
and radio presets.
Volume
6
0
Number keys
For entering track numbers
Setup
Function
Function
Top Menu
DSP
#
Band
Display
Top Menu/#
For controlling a DVD Player.
Mute
7
Menu keys
For customising the 568.2.
8
Preset
Changes the DSP preset.
4
5
6
7
8
9
10
9
Display
Changes the front panel
display.
Using the digital surround processor
CD
Off
10 Volume keys/Mute
Change the volume.
15
Using the digital surround processor
Quick guide to operating the 568.2 with the remote
16
Action
568.2 as controller
DSP speaker as controller
Source selection
CD, RADIO etc.
CD, RADIO etc.
Go to standby
Off
Off
Volume
Volume A V
Volume A V
Mute
Mute
Mute
Change display
Display
Not available
Change DSP preset
Preset
Preset
Move to next or previous menu
Menu < >
Function + Menu < >
Change the value of this menu
Menu A V
Function + Menu A V
Store settings as a new DSP preset
Store
Function + Store
Function + Store
Function + Mute
Clear (held down)
Function + Clear (held down)
or over an existing one
Associate the current DSP preset
with the current source
Delete an unwanted user preset
Selecting a source
When not playing, the digital surround processor should be left
To select a source
in the standby state. This uses a negligible amount of electricity,
but ensures that the components of the digital surround
processor operate at maximum efficiency from the moment you
● Press Source (front panel) until the display shows the source
you require.
start.
DVD
For example:
If you are not going to use the digital surround processor for
Alternatively press the appropriate source key on the remote;
back panel, and disconnect it from the AC power supply.
eg DVD.
To switch on from standby
After a short delay the display shows the currently selected DSP
preset and volume setting.
● Press Source (front panel), or select a source by pressing the
appropriate source key on the remote; eg DVD.
Digital
56
For example:
If the digital surround processor is part of a Meridian system it
The digital surround processor mutes the sound while you
will automatically switch on any other unit in the system, such as
change source.
the CD player and Meridian DSP loudspeakers.
By default the following 12 sources are available: CD, Radio, LP,
TV, Tape 1, Tape 2, CDR, Cable, DVD, VCR1, VCR2, and LDisc.
The audio input and DSP preset associated with each source
can be configured using the Meridian Configuration program; for
more information refer to Configuring the digital surround
processor using a computer, page 81.
Using the digital surround processor
several days you should switch the unit completely off at the
17
To switch to standby
● Press Off on the front panel or the remote.
.
The display will show:
If you have other Meridian 500 Series equipment or Meridian
Using the digital surround processor
DSP loudspeakers connected to the digital surround processor
18
these units will also switch to standby.
Adjusting the volume
The digital surround processor adjusts the volume in precise
To mute the sound
steps of 1dB, where 9dB is equivalent to doubling the loudness.
The current volume setting is displayed in dB on the front panel
● Press Mute.
display, and can be varied in the range 1 to 99dB.
Mute
The display will show:
When you first connect power to the digital surround processor
the volume is set to 65, which is similar to the midway position
To restore the sound
of the rotary volume control on a conventional preamplifier.
● Press Mute again.
volume levels in the range 60 to 90.
Alternatively, the sound will be restored if you adjust the volume.
To change the volume
● Press A or V (front panel), or the red A or V keys on the
remote.
As you adjust the volume setting the display will show the
current volume level.
Music
For example:
70
Using the digital surround processor
For normal to high-level listening you should expect to use
19
Changing the DSP preset
Each source has a set of DSP presets associated with it, one for
The display shows the current preset;
each of the alternative audio formats: two-channel (PCM), Dolby
for example:
Music
Digital, DTS, MPEG, and discrete Multi-channel.
You will be able to choose any of the predefined DSP presets, or
When you choose a source an appropriate DSP preset is
any user-defined presets you have stored.
selected for the incoming audio format.
Using the digital surround processor
The following table gives the sequence of DSP presets for each
20
For example, if you have selected the CD source and are playing
audio format, followed where appropriate by the abbreviated
a conventional CD, the Trifield DSP preset will initially be
name used on the display:
selected. You may then wish to choose a different DSP preset,
such as Music or Ambisonic.
You can also change the default DSP preset associated with the
Audio format
Two-channel (PCM)
Direct, Music, Trifield, Ambisonics
(Ambsonic), Super Stereo (Super),
source; see Changing the DSP preset for a source, page 33.
Stereo, Music Logic (MuLogic),
Pro Logic (ProLogic), THX Cinema
The optional multi-channel input card allows you to set up one
(THX), Mono, TV Logic, PLII Music
source as the enhanced source; see MHR Smart Link, page 2,
(PL2Music), PLII Movie (PL2Movie),
for a full description of how it works with DSP presets.
To change the DSP preset
Presets
PLII THX (PL2 THX).
Multi-channel
Ambisonics (Ambsonic), Discrete,
Cinema.
● Press Preset (front panel or remote) to step between the
different DSP presets.
Dolby Digital
Dolby Digital (Digital),
Dolby Digital THX (Dig THX)
Audio format
Presets
DTS
DTS, DTS THX, DTS Music (DTS Mus)
MPEG
MPEG, MPEG THX,
MPEG Music (MPEG Mus)
In each case these will be followed by any user-defined presets
you have stored for the appropriate audio format.
Using the digital surround processor
21
Changing the display
The digital surround processor displays information about the
The audio stream display option shows the following three
current settings on the 12-character front panel display. In
pieces of information about the audio stream:
addition, it can display the same information superimposed on a
video image. For more information about setting up the
AC3 5.1
on-screen display refer to Connecting video, page 59.
44k
To change the display
Format:
PCM 2-channel PCM
AC3 Dolby Digital
DTS DTS encoding
MPG MPEG encoding
MLP MLP encoding
MHR MHR encoding
Using the digital surround processor
● Press Display.
Each press will step between the following options:
Display option
Sample rate:
96k 96kHz
88k 88kHz
48k 48kHz
44k 44kHz
NL
Not locked
Example
In addition, the following symbols on the front panel display
DSP preset and volume
Music
65
DSP preset and THX gain
Music
-22
indicate which of the DSP processing modes are operating:
Symbol
What it means
Dolby processing is operating, or the
Source and volume
Radio
source material is Dolby Digital.
65
THX processing is operating.
Audio stream, number of channels,
PCM 6-ch 44k
Source material is DTS.
and sampling rate.
Blank
22
Input channels:
X.X Main.LFE
2-ch 2-chan. discrete
6-ch 6-chan. discrete
MPEG
Source material is MPEG.
Defining your own
presets
In addition to being able to change the source, volume, and DSP preset,
the digital surround processor provides a sophisticated range of more
advanced adjustments for each DSP preset, to allow you to change the
characteristics of the sound to the settings you want.
This chapter explains how to change these advanced parameters, and
how to store them permanently so they are available whenever you want
For information about the parameters specific to individual presets see
DSP presets, page 37.
Defining your own presets
to use them.
23
Locking and unlocking the menus
To simplify the normal operation of the digital surround
processor, and to protect the settings from accidental changes,
you can lock the menus so that the parameters cannot be
accessed.
To display or change the DSP presets, or to define your own
presets, you first need to unlock the digital surround processor
menus.
To lock the menus
● Press Off to put the 568.2 in standby.
Defining your own presets
.
24
The display shows:
● Press and hold down Preset for a
Locked
few seconds until the display shows:
To unlock the menus
● Repeat the above sequence so
that the display shows:
Unlocked
Changing the DSP parameters
Each DSP preset provides a series of parameters that you can
To change a DSP parameter
vary to customise its behaviour to your specific requirements.
For example, most presets provide Balance and Depth
parameters which alter the characteristics of the sound.
For each of the built-in DSP presets these parameters are set to
standard values, designed to give the best sound in typical
listening conditions and with most source materials. Each time
you select a different DSP preset the parameters are reset to
these standard values, even if you have previously altered them.
You can save the changes you have made to one or more DSP
parameters in place of the original DSP preset. Alternatively you
choice. User-defined presets appear in the list of DSP presets
after the built-in ones. See Defining your own presets, page 23.
Standard parameters
All DSP presets (except Mono and Direct) provide the standard
parameters shown on the next page.
Individual DSP presets provide additional parameters, to allow
you to adjust specific features provided by that preset. For full
details refer to DSP presets, page 37.
opposite.
● Press > or < (remote) until the display shows the name of the
parameter you want to change.
Treble
+1.5
For example:
● Press A or V (remote) to change the value of the parameter.
As you change the value you will be able to hear the effect on
the sound, and the display will show the current value.
After a short delay the display will revert to the normal display of
DSP preset and volume.
Using a Meridian DVD player
If your system includes a Meridian DVD player you should set
the Meridian DVD present setup option; see Changing the
setup options, page 101. The menu keys on the remote will then
operate the DVD player menus, and you can change 568.2 DSP
parameters using Function >, Function <, Function A, and
Function V.
Defining your own presets
can create a new user-defined DSP preset, with a name of your
● Make sure the menus are unlocked; see To unlock the menus
25
Defining your own presets
Standard parameters
26
Parameter
Range
Default
What it changes
Treble * †
-10dB to +10dB
+0dB
The slope of the frequency response.
Bass * †
-5dB to +5dB
+0dB
The bass response.
Phase * †
+ or -
+
The phase of all loudspeakers.
Balance
<10 to 10>
<0>
The L-R balance.
Centre
-3.0dB to +3.0dB
+0.0dB
The level of the centre.
Depth
-2.5ms to +5.0ms
+0.0
The delay of the centre.
Rear
-30dB to +10dB
+0dB
The level of the rears.
Sides
-30dB to +10dB
+0dB
The level of the sides.
R Delay ‡
0ms to 30ms
15.0ms
The delay of the rears.
S Delay ‡
0ms to 30ms
15.0ms
The delay of the sides.
LipSync
0ms to 30ms
0ms
The sync. delay.
OSD *
Off, Low, Med, High
Low
The position of the on-screen display.
* These parameters apply to all DSP presets.
† These parameters appear on the speakers if you are using DSP loudspeakers.
‡ These parameters have a range of 0ms to 15ms for 5.1 Movie presets and a range of 15ms to 30ms for Logic presets.
Changing treble, bass, or phase
The digital surround processor provides sophisticated treble and
The treble control tilts the frequency of the response over the
bass controls, to allow you to adjust the broad balance of the
entire frequency range to make the sound brighter or dimmer. It
system to correct for the acoustics of your listening room, or for
can be adjusted between ±10dB in 0.5dB steps. Normally
a misbalanced recording. The controls are more subtle than
settings between +1.0 and -2.0 will give the most natural results.
conventional tone controls, and take advantage of digital signal
processing techniques to provide a more natural adjustment of
To change the bass
the frequency response. You can also change the absolute
phase of the signal, to compensate for recordings which are out
of phase.
● Press > or < (remote) until the display shows the current bass
setting.
Bass
In each case all the outputs of the digital surround processor are
+0.5
For example:
given the same adjustment, to ensure a correct surround effect.
The bass control allows you to adjust the bass response in the
room by ±5dB in 0.5dB steps. Normally settings between +3.0
controls appear on the 568.2 but adjustment is performed in the
and -2.0 will give the most natural results.
speaker; for more information see the relevant loudspeaker guide.
● Press A or V (remote) to change the bass.
To change the treble
To change the absolute phase
● Press > or < (remote) until the display shows the current
treble.
Treble
+1.5
● Press > or < (remote) until the display Phase
shows the phase; for example:
For example:
● Press A or V (remote) to change the phase.
● Press A or V (remote) to change the treble.
+
Defining your own presets
If you have a Meridian DSP loudspeaker the bass and treble
27
Changing the listening position
A conventional stereo system provides a single balance control,
which changes the relative loudness of the two speakers. The
To move the listening position to the
left or right
568.2 Digital Surround Processor provides a more sophisticated
adjustment which corresponds to moving the listening position
to the left or right.
● Press > or < (remote) until the display shows the current
balance.
Balance
You can also change the level of the rear or side loudspeakers
<0>
For example:
relative to the main speakers.
● Press A or V (remote) to move the listening position.
The display shows the direction and position of the listening
position.
Defining your own presets
Balance
28
<8
For example:
The arrow indicates the direction, and the number indicates the
position where 0 is central, 8 is in line with the corresponding
main speaker, and 10 is fully to one side.
Note: This adjustment is not available for the Mono preset.
To change the relative level of the rear
or side loudspeakers
● Press > or < (remote) until the display shows the speaker(s)
you want to adjust.
Rear
+0
For example:
● Press A or V (remote) to change the relative level of the
speakers, in dB.
You can change the relative loudness of the rear loudspeakers
from -30dB (about one-eighth of the loudness) to +10dB (about
For example, to double the loudness of the loudspeakers:
● Adjust their level until
Rear
+10
the display shows:
Note: This adjustment is not available for the Direct, Stereo, or
Mono presets.
If you have side speakers an additional Sides parameter allows
you to adjust the relative loudness of the side speakers.
Defining your own presets
double the loudness).
29
Changing the integration of the centre
If you have a centre loudspeaker you can adjust its relative
loudness, to provide the best integration of the centre with the
To change the relative delay of the
centre speaker
main left and right speakers.
● Press > or < (remote) until the display shows the current
You can also adjust the relative delay of the centre speaker to
centre depth.
give the best perspective between the three front speakers.
Depth
+0.0
For example:
Note: These adjustments are not available for the Direct, Stereo,
● Press A or V (remote) to change the relative depth of the
or Mono presets.
centre speaker.
To change the relative level of the
centre speaker
You can change the depth between -2.5ms, which corresponds
● Press > or < (remote) until the display shows the current
listening position, and +5ms, which corresponds to moving it
Defining your own presets
to moving the centre speaker 0.75m (2 feet) nearer to the
30
centre level.
1.5m (5 feet) further away from the listening position.
Centre+0.0dB
For example:
Increasing the depth makes the sound more open. Decreasing it
makes the sound more focused.
● Press A or V (remote) to change the relative level of the
centre speaker.
You can change the relative level by ±3dB in 0.5dB steps.
Changing the spaciousness of the sound
You can adjust the spaciousness of the sound by altering the
If you have side speakers an additional S Delay option allows
delay on the rear and side channels.
you to adjust the delay on the side speakers between 15ms and
30ms.
Note: These adjustments are not available for the Direct, Stereo,
Note: For best results you should never set the S Delay to be
or Mono presets.
less than the R Delay.
To change the relative delay of the
rear or side speakers
● Press > or < (remote) until the display shows the speaker(s)
you want to adjust.
R Delay 15.0
For example:
speakers.
The range of possible values depends on the preset. With the
music presets (Music, Trifield, and Ambisonic) you can change
the rear delay between 0ms and 30ms, which is equivalent to
moving the rear speakers 9m (30 feet) away.
The 5.1 Movie presets allow you to vary the delay between 0ms
and 15ms, and the Logic presets allow you to vary it between
15ms and 30ms.
Defining your own presets
● Press A or V (remote) to change the relative delay of the
31
Changing the lip sync and on-screen display
To adjust the lip sync
To change the position of the
on-screen display
The LipSync parameter is a unique feature of the digital
surround processor which allows you to adjust the delay
For each DSP preset you can specify the position of the
between the sound and the video image by up to one video
on-screen display (OSD), or blank the on-screen display
frame.
altogether.
Most movies are mixed for a viewing distance of 9m (30 feet),
For example, you may prefer to have the on-screen display at
and when viewed from 3.6m (12 feet) or less the sound arrives
the top of the screen when watching videos, but at the bottom
too early, giving a disconcerting effect. Using the LipSync
of the screen when listening to music.
parameter you can add an overall delay to the sound to
● Press > or < (remote) until the display shows the current OSD
accommodate your closer home viewing distance.
Defining your own presets
position.
32
Many TV broadcasts delay the picture by half a frame, and can
● Press > or < (remote)
OSD
For example:
benefit from a LipSync setting of 12ms.
LipSync
0
● Press A or V (remote) to change the position.
until the display shows:
You can choose between Off, Low, Med, or High.
● Press A or V (remote) to change the delay in milliseconds.
You can adjust the delay between 0 and 30ms, where 30ms
corresponds to sitting 9m (30 feet) further away from the screen.
Low
Changing the DSP preset for a source
Each source has an appropriate DSP preset associated with it
for each music format. For example, for a standard stereo (PCM)
● Press Preset (front panel or remote) to select the DSP preset
you want to associate with the source.
signal the CD source uses Trifield and the TV source uses
TV Logic.
Trifield
For example:
This section explains how to change the DSP preset associated
with any source.
● Press Store (front panel) to save the new association.
To change the DSP preset for a
source
The display shows the source and
● Make sure the menus are unlocked; see To unlock the menus,
After a short delay the display will revert to the normal display of
page 24.
Source key on the front panel or the appropriate source key
on the remote; eg CD.
● If necessary, select a signal in the appropriate format. For
example, to change the DSP preset used for DTS compact
discs, play a DTS CD.
DSP preset and volume.
Defining your own presets
● Select the source you want to change, by pressing the
CD=Trifield
preset you have stored; for example:
33
Defining your own presets
The 568.2 Digital Surround Processor allows you to modify one
of the built-in presets, and save it for future use.
You can either save the changes to the built-in preset, or you
can create up to 10 presets of your own, with names of your
● Change the preset parameters to the values you want to
store; see To change a DSP parameter, page 25.
● Hold down Store (front panel), or press Store (remote) until
the display shows the next available user-defined preset.
choice, so you can use them alongside the built-in presets.
Sto.User 2
Note: If you have selected Meridian DVD present in the Setup
For example:
options use Function Store instead of Store, and Function
Clear instead of Clear in the following procedure.
If you want to overwrite an existing user-defined preset:
To save the preset settings
● Press A or V (front panel or remote) to select the preset you
Defining your own presets
want to overwrite.
34
● Make sure the menus are unlocked; see To unlock the menus,
page 24.
Sto.User 1
● If necessary, select a signal in the appropriate format. For
example, to change the DSP preset used for DTS compact
discs, play a DTS CD.
For example:
Alternatively if you started with a built-in preset you can choose
that and overwrite it.
● Press Preset (front panel or remote) to select the DSP preset
you want to modify and then associate with the source.
Sto.Trifield
For example:
Trifield
For example:
● Press Store (front panel or remote).
The settings have been stored in the new or existing preset you
Each press steps through the sequence A to Z, a to z, 0 to 9, full
selected.
stop, and blank. You can also select a blank directly by pressing
Mute (front panel) or Clear (remote).
If you are defining a user preset you can now edit the name of
For example, you could change the
the preset if you wish.
Sto.La Scala
name to:
A flashing cursor shows the letter you
Sto.•ser 1
are editing:
Alternatively, you can cancel editing the name by pressing
Display (front panel).
If you have an on-screen display it shows:
● When you have entered the name you want to use press
Store (front panel or remote).
defined.
CD=La Scala
For example:
● Use Source (front panel) or > and < (remote) to select the
character position you want to edit.
● Press A or V (front panel or remote) to change the character.
Defining your own presets
The display shows the source and the new preset you have
35
To clear a user-defined preset
● Make sure the menus are unlocked; see To unlock the menus,
page 24.
● Press Preset (front panel or remote) to select the DSP preset
you want to clear.
User 2
For example:
● Press and hold down Clear (remote) for several seconds.
Preset Clear
Defining your own presets
The display shows:
36
If you clear a preset that was saved over a built-in preset, the
original settings for that preset are restored.
DSP presets
This chapter gives technical information about each of the DSP presets
built in to the digital surround processor.
It explains the processing performed by each DSP preset, and gives
details of the types of material you should use with each preset.
It also gives details of the special DSP parameters available for each
preset.
The DSP presets are divided into three categories: Logic, Music, and 5.1
Movie. You can set up the 568.2 Digital Surround Processor to use a
different subwoofer configuration for each category of DSP preset. In
select one of four DSP presets based on the audio content, together with
the appropriate subwoofer configuration.
DSP presets
addition, with the multi-channel input card, one source can automatically
37
Logic DSP presets
The digital surround processor provides six DSP presets
directness of the sound field, resulting in enhanced image
specifically designed for reproducing stereo film soundtracks.
stability compared with standard Pro Logic decoding.
PLII Movie and PLII THX use the new Dolby Pro Logic II DSP
Meridian’s implementation of Pro Logic II was the first in the
processing mode, and are the recommended choices for Dolby
world to receive Dolby approval, and uses proprietary code
Surround encoded material. Most films, and many TV
based on 48-bit precision to give outstanding clarity.
programmes and series, are encoded using Dolby Surround,
and it is increasingly being used to encode music.
PLII THX
Pro Logic, THX Cinema, and TV Logic are based on the original
The PLII THX DSP preset provides Pro Logic II decoding,
Dolby Pro Logic DSP processing mode, and are also designed
followed by additional signal processing refinements developed
for Dolby Surround encoded material.
by Lucasfilm Ltd. These are designed to provide a better match
between the sound of the movie theatre and a home cinema in
The remaining Logic preset, Mono is designed for films with
the following ways:
mono soundtracks.
❍ The front channels are re-equalised to correct for the higher
Pro Logic II
treble often found in film soundtracks.
DSP presets
❍ The surround channels are frequency-corrected using a
38
Dolby Pro Logic II is a new decoding mode designed for any
timbre-matching process so that sounds moving front–back
two-channel source, whether or not it is encoded for Dolby
are more convincing.
Surround. It can also be used for two-channel Dolby Digital
sources
❍ The surround channels are decorrelated to break up any
artificial localisation of the rear signals due to the speakers
being nearby. In the 568.2 Digital Surround Processor this
It re-creates 5.1-channel movie surround from the two-channel
decorrelation is optimised to give spacious surround sound
source, using improved decoding techniques that preserve the
that has no artefacts disturbing to music or other sensitive
sounds in the mix.
❍ The time synchronisation between loudspeakers is adjusted to
Pro Logic
compensate for the fact that the speakers in a home system
tend to be a lot closer to the listener than in a movie theatre.
Dolby Surround is an encoding system based on a phaseamplitude matrix whose output can be decoded by a very
THX can also be used with Pro Logic, or the 5.1 Movie DSP
simple passive matrix. Such a decoder gives quite a poor
presets; see THX Cinema, page 40, and Dolby Digital THX, DTS
separation.
THX, and MPEG THX, page 47.
The Pro Logic system uses psychoacoustically optimised
PLII Movie and PLII THX preset
parameters
directional enhancement to increase the separation in both
left–right and front–back directions. It does this by continuously
calculating the position and degree of the currently dominant
Parameter
Options
What it changes
Steered All
Steered Rear,
Which of the four surround
Steered Side,
channels are generated by
Steered All
steering.
R Delay
10ms to 25ms
The delay of the rears.
S Delay
10ms to 25ms
The delay of the sides.
Pro Logic
Off, On
On selects the original
reduction process in the surround signal. Since Dolby Surround
Pro Logic decoding.
material is encoded with this in mind the noise-reduction is
sound. This sound is then steered to a greater or lesser extent to
that position in the arriving sound. This technique is very
successful for cinema and other dramatic programmes.
Further refinements in the Pro Logic decoder include the filtering
and delay of the rear surround signal to reduce any tendency for
the surround signals to divert attention or become dominant.
The Pro Logic decoder also uses a modified digital Dolby noiseDSP presets
permanently operating in this mode.
39
THX Cinema
TV Logic
The THX Cinema preset provides Pro Logic decoding, followed
TV Logic is a logic preset, with user-adjustable steering, that can
by the THX refinements, as for PLII THX; see PLII THX, page 38.
give higher intelligibility and a more appropriate spatial
presentation for studio-based TV material.
Pro Logic and THX Cinema DSP
preset parameters
TV Logic DSP preset parameters
Parameter
Options
What it changes
Parameter
Options
What it changes
Mono Rear
Steered Rear,
Which of the surround
Roll
Off, Low, Med,
The degree of left–right
High
steering.
Steered Side,
channels are generated by
Steered All,
steering. Mono gives
Mono All,
conventional Pro Logic
Mono Rear,
surrounds. Steered gives
Mono Side
stereo surrounds.
Yaw
Mono Rear
Off, Low, Med,
The degree of front–rear
High
steering.
Steered Rear,
Which of the surround
Steered Side,
channels are generated by
Steered All,
steering.
DSP presets
Mono All, Mono
40
Rear, Mono Side
Mono
Mono DSP preset parameters
In the Mono DSP preset you can choose to listen to:
Parameter
❍ Only one of two input channels, for use when different
Input
What it changes
Auto L+R,
The channel selected.
Input L, Input R,
languages or material are carried on each channel.
Input L+R
❍ A combined version of the two input channels, for use if the
material was originally mono and has been conveyed on a
Options
Academy
Off or On
two-channel carrier.
Select On to include an
equalisation (recommended by
Lucasfilm Ltd) to correct for a
If Party? is set to No, the combined or selected signal is played
high-frequency balance in
only through the centre speaker, or the left and right speakers if
some old mono films. Ignored if
there is no centre, to centrally localise high-frequency hiss and
Party? is set to Yes.
clicks.
Note: If Party? is set to Yes, full range bass is played through any
speakers that are not supplemented by a subwoofer, and this may
Party?
No or Yes
Select Yes to play the mono
signal through all speakers,
including subs.
damage small speakers at high volume levels.
DSP presets
41
Music DSP presets
The digital surround processor provides eight alternative music
hearing changes with direction.
DSP presets designed for the reproduction of well-recorded
material, originally intended for replay over a traditional stereo
The Music DSP preset is recommended for recordings made
pair of loudspeakers. In addition, it provides DSP presets for
with spaced omnidirectional microphones, or using a mono-
reproducing music in the digitally encoded DTS and MPEG
surround technique.
formats:
Trifield
Audio format
Presets
Conventional stereo Direct, Music, Trifield, Ambisonics, Super
(PCM)
Stereo, Stereo, Music Logic, PLII Music
DTS
DTS Music
MPEG
MPEG Music
Music
The Music DSP preset extracts the mono and surround
DSP presets
components of the original recording. These components
provide an alternative representation of the original sound, and
this representation is sometimes used for recording systems or
in broadcasts such as FM radio.
The mono element is equalised using a proprietary Meridian
technique to match the tone colour of the centre speaker, and to
42
compensate for the fact that the frequency response of human
As for the Music DSP preset, the Trifield preset extracts the
mono and surround components of the original recording. It then
calculates the signals for the front left, centre, and right
speakers, using the phase and amplitude differences between
the three front channels, to redistribute the sounds on a
frequency-dependent basis. This gives a significant
improvement over traditional stereo, which converts the
differences between the microphone signals into amplitude
differences in the speaker signals. This version of the Trifield
algorithm is virtually impossible to implement without digital
signal processing.
Trifield is recommended for well-made recordings and stereo
television broadcasts that are not Dolby Surround encoded. An
advantage over the Music DSP preset is that the front stereo
image is more focused, and the width of the image can be
adjusted.
Music and Trifield DSP preset
parameters
Ambisonics
The Ambisonics DSP preset is designed for replaying material
Parameter
Options
What it changes
HS Out? *
Y or N
High-rate audio.
Centre
Flat, EQ1 to 3
The timbre of the centre
reproduction and can give breathtakingly realistic sound when
loudspeaker.
replayed using the digital surround processor.
encoded in UHJ format, the two-channel stereo-compatible
encoding found on Ambisonically recorded discs and
broadcasts. This material is specifically encoded for surround
Width †
0 to 1.5
The width of the image.
Surr. Rear
Surr. Rear,
Switches the surround signal
special microphone technique picks up the sound of the original
Surr. Side,
between the side and rear
performance in all three dimensions, allowing an archive to be
Surr. All
speakers.
made which describes the sound field exactly at that position.
R Filter
Off, 1kHz, 3kHz, The cutoff of high frequencies
7kHz
S Filter
from the rear surrounds.
Ambisonic surround sound is quite unlike conventional stereo. A
The microphone signals are then encoded using a phaseamplitude matrix to allow the effect to be conveyed on twochannel carriers (like FM radio, LP, or CD).
Off, 1kHz, 3kHz, The cutoff of high frequencies
7kHz
from the side surrounds.
The digital surround processor uses accurately matched,
frequency-dependent, phase-amplitude matrices to decode the
signal and construct the signals for each speaker feed.
standard-rate audio, downsampled if necessary.
† Trifield only.
The fundamental difference between Ambisonic surround sound
and conventional stereo is that the signals from all the speakers
combine to produce a coherent sound field at the listening
position, giving the illusion that you are sitting inside the
DSP presets
* Y gives high-rate audio, upsampled if necessary. N gives
43
off to one side.
Ambisonics and Super Stereo DSP
preset parameters
Of all the signal-processing options, Ambisonics is the one that
Parameter
Options
What it changes
Width *
0 to 1
The width of the image.
Row †
A, C, E, G, I,
The seating position; the letters
K, M
are like rows in a hall.
5 Channels
7, 6, 5, 4
The number of speakers.
R Filter
Off, 3kHz, 7kHz, The cutoff of high frequencies
recording space whether you are at the exact central seat or well
requires the greatest attention to speaker choice and
positioning.
Super Stereo
Super Stereo synthesises a signal from a conventional stereo
recording or broadcast so that it can be decoded using the
Ambisonic decoder. The result is especially effective for two
particular types of recordings:
❍ Those using true coincident microphone techniques.
❍ Multi-tracked or multi-miked recordings.
9kHz
S Filter
from the rear surrounds.
Off, 3kHz, 7kHz, The cutoff of high frequencies
9kHz
from the side surrounds.
* Super Stereo only.
† Ambisonics only.
DSP presets
Music Logic
44
Music Logic is a music DSP preset with user-adjustable
steering, designed to provide an exciting experience with many
types of studio-produced music.
Music Logic DSP preset parameters
PLII Music preset parameters
Parameter
What it changes
Parameter
Options
What it changes
Off, Low,
The degree of left-right
Steered All
Steered Rear,
Which of the four surround
Med, High
steering.
Roll
Yaw
Mono Rear
Options
Steered Side,
channels are generated by
All Steered
steering.
Off, Low,
The degree of front-rear
Med, High
steering.
R Delay
10ms to 15ms
The delay of the rears.
S Delay
10ms to 15ms
The delay of the sides.
Width
0 to 7
The centre spread, where 0 is
Steered Rear,
Which of the surround
Steered Side,
channels are generated by
Steered All,
steering.
full centre and 7 is full left and
Mono All, Mono
right.
Rear, Mono Side
Dimension
-3 to +3
PLII Music
The spatial soundfield, where
-3 puts the balance to the rear
of the room and +3 puts it to
the front.
The PLII Music preset is designed to use the Pro Logic II DSP
processing mode to decode music sources. It provides
to allow you to adjust the sound field.
Panorama
No, Yes
Extends the front stereo image
to include the surround
speakers, providing a wraparound effect.
DSP presets
additional Width, Dimension, and Panorama preset parameters
45
DTS Music
Stereo and Direct DSP preset
parameters
DTS Music is a special version of the DTS preset designed with
a lower LFE level of -10dB to match the bass levels applied to
DTS music CDs.
MPEG Music
MPEG Music is a special version of the MPEG preset designed
for listening to MPEG encoded music CDs.
For details of the DTS Music and MPEG Music DSP preset
parameters see 5.1 Movie DSP preset parameters, page 48.
Stereo and Direct
The Stereo preset passes the left and right input signals directly
to the left and right main speakers. Any mono or front left and
DSP presets
right subwoofers continue to be used.
46
With the Direct preset only the left and right main speakers are
used.
Parameter
Options
What it changes
HS Out? *
Y or N
High-rate audio.
* Y gives high-rate audio upsampled if necessary. N gives
standard-rate audio, downsampled if necessary.
5.1 Movie DSP presets
The discrete digital formats can encode up to eight separate
MPEG
channels, which can be decoded to provide separate signals to
the eight speakers in a surround configuration.
MPEG surround is the preferred audio format for DVD in PAL
territories.
Dolby Digital
Dolby Digital is a totally digital format capable of encoding five
Dolby Digital THX, DTS THX, and
MPEG THX
full frequency-range channels, together with one restricted
frequency-range channel used for extreme bass.
As with the standard THX Cinema DSP preset, Dolby Digital
THX, DTS THX, and MPEG THX re-equalise the signals to suit
The digital surround processor’s Dolby Digital preset is capable
domestic listening conditions, and applies frequency-response
of decoding the range of different options provided by Dolby
correction and decorrelation to the surround channels to make
Digital. In addition, it provides bass power management to
the surround sound more realistic, and can be used whether or
protect systems from the potentially high bass levels that Dolby
not your other equipment is THX approved.
Digital can produce.
THX Surround EX and Meridian EZ
DTS
THX Surround EX and Meridian EZ are DSP processing modes
that are designed to give improved surround imaging with four
used to deliver multi-channel music from a CD or surround
surround speakers.
sound from a DVD or LaserDisc to accompany a movie. CDs,
DVDs, and LaserDiscs are currently available which provide a
Both THX Surround EX and Meridian EZ can be used with THX
DTS signal in place of the normal digital audio.
Surround EX encoded material. In addition, Meridian EZ can be
used to give improved surround imaging with DTS ES encoded
material.
DSP presets
DTS is an alternative compressed sound format that can be
47
THX Surround EX and Meridian EZ can also be used with non-
Using dynamic range control
encoded material, and often give a good effect depending on
the soundtrack.
Because Dolby Digital is a digital format it allows dynamic range
control without the distortion involved in analogue methods. The
5.1 Movie DSP preset parameters
Compress parameter can be set to one of the following options:
Parameter
Options
What it changes
Option
Description
Surr. Rear
Surr. Rear
Switches the surround signal
Compress off
No compression.
Surr.Side
between the side and rear
Surr. All
speakers.
0 to -30dB
The relative level of the LFE
which is ideal for demonstration and quiet
bass channel.
listening.
LFE
Max SPL *
Limit *
Quiet boost
105 to 120dB
The peak-level limit for an LFE
Compress
Moderate amounts of both bottom-up and top-
SPL
subwoofer.
med
down compression.
-15 to -5dBFS
The peak-level limit of the total
Loud cut
A moderate amount of top-down compression.
bass signal added to the main
DSP presets
speakers.
Compress †
Off, Low, Med,
The dynamic range control; see
Top, Max, Mix
opposite.
This reduces loud sounds.
Compress
max
Full bottom-up and top-down compression.
Quiet sounds are raised to be audible and loud
passages are minimised to avoid disturbance,
which is useful for late-night listening.
* See Using peak-level limiting, page 49.
† Dolby Digital and Dolby Digital THX only.
48
Moderate bottom-up compression. This raises
quiet sounds above the background noise,
Compress
Bypasses dialogue normalisation and
mix
references the sound pressure level in the studio
where the material was mixed.
Dialog normalisation display
Using peak-level limiting
Dolby Digital audio streams include Dialog Normalisation and
The Max SPL or Limit parameters allow you to set up peak-level
Mix levels, to specify the recommended listening level of the
limiting for bass signals, and the setting applies to all the
soundtrack.
discrete digital DSP presets.
The digital surround processor uses the Dialog Normalisation
If your loudspeaker layout includes one or more subwoofers the
level to adjust the volume level so that the soundtrack is
parameter is named Max SPL, and it sets the peak-level limit for
reproduced at the correct absolute level, assuming the system is
the LFE channel.
calibrated to produce 75dB SPL at volume 87.
If your loudspeaker layout contains no subwoofer the parameter
The Mix level is an alternative level which you can select by
is named Limit, and it sets the peak-level limit of the bass signal
setting the Compression parameter to Mix.
added to the main loudspeakers. For loudspeaker layouts using
Meridian DSP loudspeakers as the main left and right, or centre
The Dialog Normalisation or Mix level is shown in a separate
speakers, the Limit value is fixed at -11dBFS and the parameter
display option for Dolby Digital sources:
does not appear in the menu.
DialNorm -31
For example:
DSP presets
Mixlevel -27
Or:
49
THX Surround EX
Meridian EZ
THX Surround EX allows 5.1-channel film soundtracks to be
Meridian have used their experience in developing algorithms for
encoded with an extra surround channel during the mixing
multiple surround speakers to create a proprietary DSP
process. EX post-processing can be used with THX when
processing mode, called Meridian EZ. This is designed to give
decoding a 5.1-channel Dolby Digital signal. The decoded
an exciting spacious surround enhancement for non-THX
surround signals are matrixed to the four surround speakers
enhanced 5.1 sources, such as Dolby Digital and DTS.
giving more detailed imaging behind the listener and bringing
more depth, ambience, and localisation than before.
EZ post-processing is available with the following DSP presets:
Digital, DTS, DTS Music, MPEG, and MPEG Music.
EX post-processing is available with Digital THX preset:
Parameter
Options
What it changes
THX-EX
On, Off, Auto
Switches on or off the EX post-
Parameter
Options
EZ
Off, On, Auto *
What it changes
Switches Meridian EZ postprocessing on or off.
processing. Auto automatically
detects bitstreams marked as
DSP presets
EX encoded *.
50
* Some EX-encoded discs may not be marked as EX encoded,
in which case select On rather than Auto.
* Auto is only available for Dolby Digital sources.
Multi-channel presets
With the optional multi-channel input card the 568.2 Digital
The Discrete preset uses the subwoofer configuration specified
Surround Processor can process sources consisting of up to six
for Music presets.
discrete multi-channel digital inputs.
Cinema
Each source can be configured to use either the multi-channel
input, or a two-channel input such as D5, D6, or D7.
The Cinema preset is a user preset which is provided when you
reset the 568.2 to a standard Type; see Choosing a standard
If a source, such as DVD, is configured to use the multi-channel
setting, page 68. It is based on the built-in Discrete preset, but
input, you can specify a separate two-channel preset and six-
with settings more appropriate for movie soundtracks. When
channel preset to be selected automatically, depending on the
using the Meridian Smart Link it is automatically selected for the
audio format of the source.
enhanced source for Movie 6 materials.
In addition, for one enhanced multi-channel source you can
The Cinema preset can be modified, or even deleted if you
specify four alternative presets: Music 2, Music 6, Movie 2, and
prefer to use Discrete for all the multi-channel materials; see
Movie 6, which will be selected according to the audio content.
Defining your own presets, page 34.
The Music or 5.1 Movie subwoofer configuration will also be
selected automatically, as appropriate. For more information see
The Cinema preset uses the subwoofer configuration specified
MHR Smart Link, page 2.
for 5.1 Movie presets.
The Discrete preset is designed for music, and treats the inputs
very much like 5.1 channel compressed sources; for example
the same dynamic bass limiting is used to protect the speakers.
DSP presets
Discrete
51
Discrete preset parameters
Ambisonics
Parameter
Options
What it changes
The Ambisonics preset allows you to decode multi-channel
HS Out? *
Y or N
Select Y for high-rate audio,
upsampled if necessary. Select
N for standard-rate audio,
downsampled if necessary.
LFE cut?
2+2+2
Off, On
DSP presets
Limit
52
information to give a three-axis representation of the sound at
the recording position. The signals are: mono sound pressure,
left-right velocity component, front-back velocity component,
input.
and up-down velocity component.
Off, 5.1,
Determines how channels 3+4
Side, 7.1
are used. Side uses them for
-18dB to
The relative level of the LFE
+10dB
bass channel.
-15 to
The peak-level limit of the total
-5dBFS
bass signal added to the main
speakers.
* Only available with compatible hardware; contact your
Meridian dealer.
Ambisonics B format contains four independent channels of
Adds a 10dB cut to the LFE
the side speakers.
LFE
sources which have been encoded in Ambisonics B format.
The Ambisonics preset uses the subwoofer configuration
specified for Music presets.
Setting up the digital
surround processor
This chapter explains how to install the digital surround processor. It
describes what you should find when you unpack the unit, how you should
constraints.
Before you begin installation you should ensure that your digital surround
processor is the correct voltage for your local AC supply. If it is not, do not
try to install the unit, and contact your dealer.
You should not make any connections to the digital surround processor,
or to any other component in your system, while the AC power supply is
connected and switched on.
Setting up the digital surround processor
connect it to your other audio equipment and speakers, and the siting
53
Unpacking
The digital surround processor comes in a box containing the
Radio interference
following components:
Setting up the digital surround processor
FCC Warning: This equipment generates and can radiate radio
54
❍ Meridian 568.2 Digital Surround Processor.
frequency energy and if not installed and used correctly in
❍ Meridian System Remote.
accordance with our instructions may cause interference to
❍ Power cord.
radio communications or radio and television reception. It has
❍ 500 Series communications lead.
been type-tested and complies with the limits set out in Subpart
❍ RS232 computer serial lead.
J, Part 15 of FCC rules for a Class B computing device. These
❍ This manual.
limits are intended to provide reasonable protection against
such interference in home installations.
If the 568.2 Digital Surround Processor is supplied with a multichannel input card, a Meridian Smart Link lead is also provided.
EEC: This product has been designed and type-tested to
comply with the limits set out in EN55013 and EN55020.
If any of these items are missing please contact your dealer. We
suggest that you retain the packing in case you need to
transport the unit.
Positioning the digital surround processor
Safety warnings
To avoid interference
❍ Do not expose the unit to dripping or splashing.
Do not position the digital surround processor:
❍ Do not place any object filled with liquid, such as a vase, on
the unit.
❍ Do not place naked flame sources, such as lighted candles,
on the unit.
❍ Near strong magnetic radiation, such as near a power
amplifier.
❍ Near to a television, or where connecting cables may be
subject to or cause interference.
Do not position the digital surround processor:
❍ In direct sunlight.
❍ Near heat sources, such as a radiator.
❍ Directly on top of heat producing equipment, such as a power
amplifier.
Ensure that air can flow through the cooling slots on the base
and top cover. Alternatively, an optional Fan kit can be fitted to
ensure adequate ventilation when the 568.2 is installed in an
enclosed space.
Setting up the digital surround processor
To avoid overheating
55
Connecting the digital surround processor
Rear panel
Smart Link
connector
Power input
and fuse
Analogue
speakers
Balanced analogue
outputs
REAR-L SIDE-L/SUB
Analogue
inputs
Analogue
speakers
CENTRE
RADIO
MAIN-L
TV
Setting up the digital surround processor
SMART LINK
OFF
56
ON
7
5
8
6
3
1
4
REAR-R SIDE-R/SUB
CENTRE
RIGHT
2
SUB
LEFT
L
R
MAIN-R
A2
A1
ANALOGUE
INPUT
BALANCED OUTPUT
CDR/D3
CD/D1
7–8
5–6
3–4
1–2
OUT
IN
LD/O1
RS232
MERIDIAN COMMS
PC
Comms
TAPE2/D4 DVD/D2
DIGITAL INPUT
BYPASS
Optical
input
REARS
Digital Digital
inputs output
Video connections
To take advantage of the on-screen display you should loop
SIDES/SUB CENTRE/SUB
DIGITAL OUTPUT
Digital
speakers
Use this connection
COMPOSITE/S IN
COMPOSITE
VIDEO
S
Video
connections
To connect to this
The video output from the 581
Video Controller, or a video
either composite or S-video through the 568.2; do not connect
recorder, TV tuner, or cable
both inputs.
Both video loop inputs include DC rejection.
MAIN
television.
COMPOSITE/S OUT
The video input of a television or
monitor.
Digital audio inputs
The Smart Link connection uses a standard 75Ω SVGA
computer monitor cable.
The following table gives details of the digital audio inputs:
Analogue audio inputs
Use this input To connect to this
D1 to D4
A digital source, such as a CD player, DVD
player, digital tape recorder, or digital
LD/01
A digital-optical source, such as a LaserDisc
Use this input
To connect to this
TV/A1, RADIO/A2
An analogue source such as a radio tuner,
tape recorder, TV tuner, or cable
player, the 519 Demodulator, or a CD player
television.
with no digital-cable output.
SMART LINK
Six discrete digital channels from a Meridian
The analogue connections should be made using high-quality
598 DVD Player. Only available if a multi-
screened cable, taking care to connect the left and right
channel input card is fitted.
channels correctly.
The digital connections should be made with high-quality 75Ω
screened cable. Suitable cables are available from Meridian. We
do not recommend using audio cables, which do not have
adequate shielding or the correct impedance, or cables intended
for UHF applications, as these do not provide adequate
shielding in the 1–30MHz region.
Setting up the digital surround processor
television tuner.
The following table gives details of the analogue audio inputs:
Optical connections should be made using a suitable optical
fibre supplied by your dealer.
57
Setting up the digital surround processor
Audio outputs
Communications connections
The following table gives details of the analogue and digital
The following table gives details of the communications
outputs:
connections:
Use this output
To connect to this
Use this connection
MAIN 1-2
Main left and right speakers.
COMMS
CENTRE/SUB 3-4
Centre speaker and centre or mono
Left and right subwoofers, or side left and
speaker.
RS232
digital surround processor using a
Left and right rear surround speakers.
To use a Meridian DSP loudspeaker in a particular position
The serial port of a PC, to configure
the 568.2. See Configuring the
side right surround speakers.
REARS 7-8
Other Meridian 500 Series
equipment, and the master digital
subwoofer.
SIDES/SUB 5-6
To connect to this
computer, page 81.
Other connections
connect it to the appropriate digital output.
The following table gives details of the other connections:
To use a Meridian active loudspeaker, or an analogue speaker in
conjunction with a suitable power amplifier, connect the input of
the power amplifier to the appropriate analogue output.
Use this connection
BYPASS
To connect to this
A digital tape recorder, or second
digital surround processor.
EXPANSION
Depends on the expansion card
fitted; consult your Meridian dealer.
58
Connecting video
On-screen display
● Connect the corresponding VIDEO OUT socket from the 568.2
to the television or monitor.
Television/Monitor
The on-screen display automatically locks to an NTSC, PAL, or
SECAM signal, and requires an input signal to operate. The
MONITOR
IN
video circuits in the 568.2 are of broadcast quality, and passing
568.2 Digital Surround Processor
Video source
(eg 562V, 581, or DVD Player)
VIDEO
Video lead
If your surround system includes video the 568.2 can add a text
overlay to the video signal, to provide additional information
about its operation in the form of a textual on-screen display
(OSD). In normal operation this repeats the information provided
on the 568.2 front panel display. During calibration the onscreen display provides additional guidelines to help you
perform the calibration sequence.
● Connect either the composite or S-video output from the
video source to the appropriate VIDEO IN socket on the 568.2
Digital Surround Processor.
affect its quality.
Setting up the digital surround processor
VIDEO OUT
OUT
IN
the video signal through the digital surround processor will not
59
Connecting speakers
To connect to Meridian DSP
loudspeakers
● If your system includes more than two Meridian DSP
loudspeakers you will need a 511 S-patch box (available
separately) to link together the S5 leads from each speaker.
DSP5000C
Centre (master)
Connect the COMMS output from the master digital speaker
to one socket on the 511 using an S5 lead.
568.2 Digital Surround Processor
Setting up the digital surround processor
INPUT
COMMS
OUTPUT
60
DIGITAL
OUTPUT
DIGITAL
INPUTS
● Link all the other digital speakers together using S5 leads, as
shown in the illustration. The other sockets on the 511 can be
COMMS DIGITAL OUTPUTS
used to distribute the comms to each slave speaker.
M5 lead
1
● Use the duplicate sockets on each digital speaker to link the
511 S-patch box
2
S5 lead (digital unused)
S5 lead
speakers together in pairs, corresponding to the pairs of
channels on the digital outputs.
DSP5000 – Main R
DSP5000 – Main L
DIGITAL INPUTS DIGITAL
COMMS
OUTPUT OUTPUT INPUT
2
1
DIGITAL INPUTS DIGITAL
COMMS
OUTPUT OUTPUT INPUT
2
1
S5 lead
● Use the comms part of an M5 lead to connect one of the
COMMS sockets on the 568.2 to the digital speaker you have
chosen as the master (typically the centre speaker).
● Use the audio part of the M5 lead to connect the digital
speaker to the appropriate digital output socket.
To connect to active loudspeakers
(eg Meridian M33s)
M33 Active
Loudspeaker
M33 Active
Loudspeaker
568.2 Digital Surround Processor
INPUT
557 Stereo Power Amplifier
MAIN–L
1
2
MAIN–R
INPUT
INPUT
INPUT
Audio leads
● Connect the appropriate analogue output socket from the
digital surround processor to the speaker inputs, using
screened audio cable.
568.2 Digital Surround Processor
Audio leads
● Connect the appropriate analogue output sockets from the
digital surround processor to the stereo power amplifier line
inputs, using screened audio cable.
● Connect the speaker outputs from the stereo power amplifier
to suitable speakers.
The Meridian 557 Stereo Power Amplifier provides balanced
inputs, so you have the option of connecting to it using the
balanced outputs of the 568.2 Digital Surround Processor.
Setting up the digital surround processor
MAIN–L
1
2
MAIN–R
To connect to a stereo power
amplifier (eg Meridian 556 or 557)
61
To connect an active subwoofer
(eg Meridian M1500 or M2500)
568.2 Digital Surround Processor
4
SUB
Subwoofer
DIRECT
INPUT
CROSSOVER
INPUT
Setting up the digital surround processor
Audio lead
62
● Connect the SUB analogue output socket from the 568.2
Digital Surround Processor to the subwoofer’s line level input.
The digital surround processor provides very high-quality
crossovers for the subwoofer, and for best results you should
use these instead of the subwoofer’s crossover. To do this set
the subwoofer filtering to Narrow, and remove any crossover in
the subwoofer or set it to its highest setting (eg 200Hz). If you
cannot do this set the subwoofer filtering to wide to switch off
the digital surround processor’s crossover and use Sine/Sub
mode to match the subwoofer’s crossover frequency. For more
information see Setting up subwoofers, page 78.
If you are using an M1500 or M2500 use the L+ input and
configure it for Bypass; refer to the subwoofer’s user guide for
more information.
Connecting sources
To connect to a digital source
(eg Meridian 588 24-Bit CD Player)
588 24-Bit CD Player
DIGITAL
OUTPUT
To connect to an analogue source
(eg Meridian 504 FM Tuner)
568.2 Digital Surround Processor
DIGITAL INPUT
CD/D1
Digital lead
568.2 Digital Surround Processor
504 FM Tuner
OUTPUT
ANALOGUE INPUT
RADIO/A2
Audio lead
You can connect up to two analogue sources to the 568.2
Surround Processor.
Digital Surround Processor.
● Connect the digital source to one of the digital input sockets
● Connect the analogue source to one of the analogue input
of the 568.2, using a high-quality digital phono lead.
sockets of the 568.2, using a standard phono lead.
Setting up the digital surround processor
You can connect up to five digital sources to the 568.2 Digital
63
To connect to a DVD-Audio player
(eg Meridian 598 DVD Player)
To connect to a LaserDisc player
LaserDisc player
Meridian 598 DVD Audio Player
SMART
LINK
S-video
output
568.2 Digital Surround Processor
SMART
LINK
OPTICAL
OUTPUT
RF
OUTPUT
VIDEO
OUT
RF
lead
RF
INPUT
568.2 Digital Surround Processor
VIDEO
IN S
DIGITAL INPUTS
LD/O1
VIDEO IN
S
S-video lead
Setting up the digital surround processor
SVGA lead
64
S-video lead
Optical
lead
OPTICAL OPTICAL
INPUT
OUTPUT
Meridian 519
Demodulator
● Connect the S-video output from the DVD player to the
Optical lead
S VIDEO IN socket of the 568.2, using an S-video lead.
● Connect the SMART LINK output from the DVD player to the
SMART LINK input of the 568.2, using an SVGA computer
monitor lead.
● Connect the S-video output from the LaserDisc player to the
S VIDEO IN socket of the 568.2, using an S-video lead.
● Connect the RF output from the LaserDisc player to the 519
RF input.
● Connect the optical output from the LaserDisc player to the
519 optical input, and the 519 optical output to the LD/O1
digital input socket on the 568.2, using optical leads.
To connect to a 562 or 562V
Multimedia Controller
562V Multimedia Controller
MAIN
DIGITAL OUTPUT ANALOGUE
MAIN
Digital lead
● Connect up to eight analogue, five digital, and two optical
sources to the appropriate inputs of the 562 or 562V.
568.2 Digital Surround Processor
DIGITAL INPUT
CD/D1
ANALOGUE INPUT
TV/A1
Audio lead
D1 digital input socket of the 568.2, using high-quality 75Ω
screened cable.
● Connect the MAIN analogue output of the 562 or 562V to the
TV/A1 analogue input socket of the 568.2, using screened
audio cable.
This takes advantage of the high-quality 24-bit analogue-todigital converter in the 568.2 to perform the conversion of
analogue sources.
● If you are using a 562V to switch the video signals, route the
video through the 568.2 to take advantage of the on-screen
display; see On-screen display, page 59.
● Configure each 562 or 562V source as required; refer to the
562/562V User Guide for more information.
● Configure the 568.2 to a 562 Type option; see Choosing a
standard setting, page 68.
Setting up the digital surround processor
● Connect the MAIN digital output of the 562 or 562V to the CD/
● Configure the 562 to Type 1.
65
Connecting to other Meridian equipment
To connect to other Meridian 500
Series equipment
One unit will then be designated
● Connect one of the COMMS sockets on the back panel of the
This is the unit that will respond to the remote.
Controller
as the controller, and display:
Setting up the digital surround processor
568.2 Digital Surround Processor to one of the COMMS
66
sockets on another 500 Series unit, using the 500 comms lead
All the other units will be configured
provided with the digital surround processor.
as non-controllers, and display:
Not Con.
The sequence in which you connect the units is not important.
Your system is now set up and ready for use.
568.2 Digital Surround Processor
● If for any reason the automatic setup does not give the
COMMS
500 Series unit
COMMS
configuration you want, restore the default operation by
selecting one of the standard types; see Choosing a standard
setting, page 68.
Then configure the units with the following automatic setup
Note: Do not, under any circumstances, connect any equipment
procedure:
other than Meridian 500, 800, 600, or 200 Series to the socket
marked COMMS on the back of the digital surround processor.
● Switch all the units to standby.
● Press Clear (remote).
Auto Setup
Each unit will display:
The 568.2 Digital Surround Processor can be set up for most standard
configurations of loudspeakers and sources using just the front panel
controls and Meridian System Remote.
This chapter explains how to configure the digital surround processor
without using a computer, and then how to calibrate the loudspeakers and
sources for your particular system.
Alternatively, for complete control over all aspects of the digital surround
processor’s configuration you can set up the unit from a computer using
the Meridian Configuration program. For full information refer to the next
chapter.
Configuring the digital surround processor without a computer
Configuring the digital
surround processor
without a computer
67
Configuring the digital surround processor without a computer
Choosing a standard setting
68
The digital surround processor provides several alternative
The following diagram shows the meaning of the standard Type
standard settings, called Types, which configure all aspects of
codes:
the 568.2 into the most commonly needed configurations. In
addition, any User Types you create using the Meridian
Configuration program are also available.
Choosing one of the Types overrides any other configuration you
may have performed, and so can be used to reset the
configuration of the unit.
If your digital surround processor is connected to a television or
Type 5.S DAA
Number of main speakers:
2 Main only
3 Main & centre
4 Main & rear
5 Main, centre, & rear
7 Main, centre, side, & rear
Subwoofer:
0 No sub
1 Mono/THX sub
S Special sub
Main/centre/surround
speaker types:
D Digital
A Analogue
monitor, the on-screen display also provides additional text
explaining what to do. For information about setting up the on-
The Special sub option gives no subwoofer for Music DSP
screen display refer to Connecting video, page 59.
presets, a centre subwoofer for Logic presets, and an LFE
subwoofer for 5.1 Movie presets.
The Type you choose depends on the following aspects of your
system:
❍ The number of speakers in your system.
❍ Whether your system includes a subwoofer.
❍ Whether the speakers are analogue or digital.
To set up the 568.2 for use with a 562
or 562V Multimedia Controller
● Put the digital surround processor into standby by pressing
While in Type, select 562 Mode as follows:
Off (front panel or remote).
● Hold down the A key on the front
Type in... 3
panel until the display shows:
● Hold down the A key for three
● Press the Source key on the front
562 Mode on
panel; the display shows:
Type,wait...
● Press the Source key again to turn off 562 Mode. While 562
more seconds until the display shows:
Mode is on the Dolby indicator is illuminated.
It will then show the current Type
Type 5.1 AAA
setting; for example:
In 562 Mode all the digital and analogue sources use CD/D1 and
TV/A1 respectively:
● Press ▲or ▼on the front panel to select the Type.
For example, if you have two analogue
Type 2.0 A__
speakers select the display:
● Wait for a few seconds, while the
Source
Input
CD, Tape 2, CDR, Cable, DVD, and LD
CD/D1
Radio, LP, TV, Tape 1, VCR 1, and VCR 2
TV/A1
Typing, wait
display shows:
If a multi-channel input card is present, the DVD source is
assigned to the M1 input.
● Press the Off key on the front panel.
For information about connecting up the 568.2 see To connect
Exiting Type
The display shows:
to a 562 or 562V Multimedia Controller, page 65.
Configuring the digital surround processor without a computer
To select a Type
69
Configuring the digital surround processor without a computer
Standard source settings
70
The digital surround processor provides 12 sources
When the digital surround processor is reset to one of the
corresponding to the 12 source selection keys on the Meridian
standard Types the sources are set up with the labels, inputs,
System Remote.
and presets shown in the table below.
Source
Audio
input
2-channel
preset
Digital
preset
DTS
preset
MPEG
preset
CD
CD/D1
Trifield
Digital
DTS Mus
MPEG Mus
Radio
RADIO/A2
Music
Digital
DTS Mus
MPEG Mus
LP
RADIO/A2
Music
Digital
DTS
MPEG
TV
TV/A1
TV Logic
Digital
DTS
MPEG
Tape 1
RADIO/A2
Music
Digital
DTS
MPEG
Tape 2
TAPE2/D4
Music
Digital
DTS
MPEG
CDR
CDR/D3
Trifield
Digital
DTS
MPEG
Cable
TAPE2/D4
TV Logic
Digital
DTS
MPEG
DVD *
DVD/D2
Trifield
Digital
DTS
MPEG
VCR 1
TV/A1
Pro Logic
Digital
DTS
MPEG
VCR 2
RADIO/A2
Pro Logic
Digital
DTS
MPEG
LD
LD/01
THX Cinema
Digital THX
DTS THX
MPEG THX
* If a multi-channel card is present, the DVD source is chosen as the advanced source with the following settings; see MHR Smart link,
page 2:
Source
Audio
input
Music2
preset
Movie2
preset
Music6
preset
Movie6
preset
DVD
M1
Trifield
PLIIMovie
Discrete
Cinema
Calibrating the system
If your digital surround processor is connected to a television or
sound with any particular combination of associated equipment,
monitor, the on-screen display also provides additional text
the 568.2 Digital Surround Processor includes a built-in
explaining what to do. For information about setting up the on-
calibration procedure.
screen display refer to Connecting video, page 59.
This calibration procedure uses test signals to present a series
Each calibration test uses a test signal designed to give the best
of sounds, which you use to adjust certain aspects of the
results.
system to their optimum settings.
Using a Sound Pressure Level meter
You should work through the calibration procedure the first time
you set up your surround sound system, and whenever you want
Although you can perform the calibration procedure by ear, it is
to check the calibration, such as after changing the layout of
recommended that you perform the tests using a Sound
your room.
Pressure Level meter. These are available fairly cheaply from
Tandy/Radio Shack, or your Meridian dealer may be able to lend
Using the calibration procedure
you one.
We recommend that you perform the calibration procedure
Set the Sound Pressure Level meter to C weighted, and Slow.
using the Meridian System Remote and from the listening
Take readings with the meter at the listening position, pointing
position.
vertically. You should hold the meter with an outstretched arm to
minimise reflections from your body.
As you run the calibration procedure the name of each
calibration test is shown on the front panel display, followed by
the parameters adjusted in the test.
Configuring the digital surround processor without a computer
To help you to set up your installation to give the best possible
71
Configuring the digital surround processor without a computer
To choose the distance units
To start the calibration procedure
You can choose to display and enter distances in either feet and
● Put the digital surround processor into standby by pressing
inches, or metres.
Off (front panel or remote).
● Press and hold the Off key on the front panel for at least five
To change the distance units:
seconds.
● Put the digital surround processor into standby by pressing
Off (front panel or remote).
● Press and hold the V key on the front panel for at least five
Calibration
The display shows:
If you have an on-screen display it shows:
seconds.
The display shows the distance
Metric
units:
Imperial
or:
After a few seconds the display
Left
shows:
For more detailed information about this and the other
72
calibration tests see the following sections.
+0.0
● Press > (remote) or Source (front panel) to move to the next
test.
● Press < (remote) to move back to an earlier test.
● Press Store (front panel or remote) to jump to the next set of
tests.
The calibration tests are described in the following sections.
To exit from the calibration procedure
You can exit from the calibration procedure at any time, and any
parameters you have set will be retained.
● Press Off (front panel or remote).
Configuring the digital surround processor without a computer
To move between the calibration tests
73
Configuring the digital surround processor without a computer
Calibration tests
74
● Use the > and < keys to move between each of the speakers
Levels
in the layout in the sequence: Left, Centre, Right, Side R, Rear
These tests allow you to adjust the output level to each speaker
individually, and it follows the general guidelines from Dolby
Laboratories and Lucasfilm. A Sound Pressure Level (SPL) meter
can be useful at this stage; ask your dealer for more information.
In each test the display shows the speaker being tested, and the
current relative level.
If you have an on-screen display it shows:
● Use A and V to adjust the level of the speaker. Ignore any
tonal difference.
For correct THX reproduction you should adjust each speaker to
75dB SPL using an SPL meter. Even if your speakers are not
THX approved this setting is recommended.
Left
For example:
R, Rear L, Side L, and subwoofers.
+0.0
If you have Meridian DSP loudspeakers they cannot be set
above +0db.
Note: You cannot set the level of a subwoofer by ear, because
low-frequency noises sound quieter. To set the subwoofer
correctly either use an SPL meter, or set it by ear and then
reduce the subwoofer gain by 15dB to correct for human
hearing.
● When you have completed the Levels section press > or
Store to proceed to the next test.
Measure from the ear height at the listening position to the
tweeter on each speaker (where applicable), in the distance units
These tests allow you to adjust the delay of each of the speakers
in the layout to time-align the system so that sounds are
● Use the > and < keys to move between each of the speakers
coincident when they arrive at the listening position.
in the layout.
Before setting up the speaker outputs you need to measure the
distance to each speaker from the listening position:
Left
Sub
Centre
Left
Side
you have chosen; see To choose the distance units, page 72.
The display shows the speaker being
Left
18'0
tested, and the distance:
Right
If you have an on-screen display it shows:
Right
Side
● Use A and V to change the distance.
Repeat this for each of the speakers in your layout.
Left Rear
Surround Sub
Configuring the digital surround processor without a computer
Distance
Right Rear
● Press > or Store to proceed to the next calibration stage.
75
Configuring the digital surround processor without a computer
Fine tuning
The next display shows the distance (or delay) for the same
speaker.
These tests allow you to fine-tune the phase and delay of each
speaker when used in conjunction with other speakers on the
Left
18'0
For example:
layout.
If you have an on-screen display it shows:
● Use the > and < keys to move between each of the speakers
in the layout.
The first display allows you to adjust the phase.
Left
+
For example:
If you have an on-screen display it shows:
Choose the correct setting as follows:
Setting
What it sounds like
Correct
The sound between the speakers is
very even, and does not change
radically as you move your head.
Incorrect
The sound appears diffused, and
changes in timbre and apparent
76
location as you move your head.
dramatic effect on the overall sound.
As you increase the delay the speaker will appear to move away
from you.
You have now completed the calibration of your system.
● Press Off (front panel or remote) to exit from the calibration
procedure.
Configuring the digital surround processor without a computer
Pay particular attention to the centre channel, as this can have a
77
Configuring the digital surround processor without a computer
Setting up subwoofers
This section explains how to use Sine/Sub mode to adjust the
subwoofer crossover frequency to suit the subwoofers in your
system, and use a sinewave test signal to check for room
resonances.
The 568.2 allows the crossover frequency for any subwoofers
which you have to be adjusted between 30 and 120Hz. The
To turn on Sine/Sub mode
crossover can be set independently for Music, Logic, and 5.1
Movie presets. The default is the THX standard of 80Hz.
● Put the digital surround processor into standby by pressing
● Turn on Sine/Sub mode, as described above, and select a
Off (front panel or remote).
● Press and hold the Mute key on the front panel for at least
source.
● Press < or > (remote) until the display shows the current
five seconds.
Sine/Sub On
crossover frequency.
The display shows:
Xover
80Hz
For example:
The 568.2 will then return to standby with Sine/Sub mode turned
on.
● Press A or V (remote) to set the crossover frequency.
Sine/Sub mode adds two extra options to the DSP parameter
For THX loudspeaker systems you should not adjust these
menus: Sine and Xover.
settings – they should be left at 80Hz. 80Hz is also the
recommended setting for all movie listening. You may prefer,
To turn off Sine/Sub mode
however, to lower the crossover frequency for music if your main
speakers have good bass handling down to, say, 50Hz.
● Repeat the above procedure until
the display shows:
78
To adjust the subwoofer crossover
frequency
Sine/Sub Off
To change the sweep rate
Sine/Sub mode includes a sinewave signal test, to help you set
● Press < or > (remote) until the
the subwoofer crossover frequencies, or check for room
Pause
80Hz
display shows:
resonances.
● Press [ or ] (remote) to change the frequency in steps of
● Turn on Sine/Sub mode, as described above, and select a
1Hz.
source.
● Press A or V to change the sweep rate and direction, as
● Press < or > (remote) until the
follows:
Sine
Off
display shows:
Display
Description
● Press A to turn on the sinewave signal.
Pause
The display shows:
Sine >> 88Hz
Fast sweep up.
Sine >
82Hz
Slow sweep up.
Pause
80Hz
Paused.
Sine <
78Hz
Slow sweep down.
Sine << 65Hz
Fast sweep down.
80Hz
An 80Hz sinewave will be played through all channels.
You can change the test signal using the menu keys, as
described in the following sections.
Configuring the digital surround processor without a computer
To use the sinewave sweep test
79
Configuring the digital surround processor without a computer
80
To change the volume
To select other test signals
● Use the volume keys in the usual way.
● Press < or > (remote) until the display shows the current
signal.
Warning: Very loud low-frequency signals may damage
Signal Sine
speakers.
For example:
To select the channel
● Press A or V to choose between the following test signals:
● Press < or > (remote) until the display shows the current
Display
Description
channels.
All Channels
Signal Sine
A sinewave.
Signal Off
Silence.
Signal Noise
Pink noise (band pass 500Hz to
For example:
● Press A or V to select a specific channel, or All Channels.
2kHz for main channels).
The 568.2 Digital Surround Processor provides a flexible range of
customisation options which you can change to suit your own preferences
and the other equipment in your system. To configure the 568.2 you use
the Meridian Configuration program, an intelligent Windows-based
application that is supplied with the 568.2. This allows you to create one or
more custom configurations, and download them to the 568.2 so that they
are available alongside the built-in types.
This chapter explains how to install the Meridian Configuration program,
and then how to use it to create your own configurations of the 568.2.
Configuring the digital surround processor using a computer
Configuring the digital
surround processor
using a computer
81
Configuring the digital surround processor using a computer
The Meridian Configuration program
82
The Meridian Configuration program is a stand-alone Windows-
and the type of each speaker, to ensure that you
based application that lets you design your own configuration of
get perfect surround sound performance.
the 568.2 Digital Surround Processor to suit your own personal
preferences and the particular configuration of equipment in
Sources
your system.
Lets you customise the operation of each of the
sources, including the presets used by each source
The Meridian Configuration program provides the following
for each of the audio formats, the digital, analogue,
sections to allow you to control the corresponding aspects of
and/or video inputs used for that source, and
the digital surround processor’s operation:
additional information about the type of each
source.
Setup
Lets you specify general features of the digital
surround processor’s operation, including the
position of the on-screen display, the information
provided on the front panel displays, the startup
volume, and settings affecting its operation in multiroom systems.
Speakers
Lets you configure the digital surround processor to
suit the layout of the loudspeakers in your system,
Presets
Lets you customise the settings of the built-in DSP
presets, and create additional presets of your own
based on the built-in presets.
Installing the Meridian Configuration program
Planning the configuration
To use the Meridian Configuration program you need:
Before creating a configuration for your 568.2 Digital Surround
Processor it is a good idea to plan the following aspects of your
❍ A computer running Windows 95 or Windows NT 4.00.
setup:
❍ A 100MHz or faster Pentium-class processor.
❍ At least 16 Mbytes of RAM.
❍ 5 Mbytes of free disk space.
❍ How you are going to set up the different speakers in your
layout.
❍ A vacant 9-pin serial port assigned to one of COM1 to 4.
❍ Whether the bass is going to be handled by the main
The software requires a mouse or similar pointing device – it
❍ Which analogue or digital inputs you are going to use for each
speakers, or by one or more subwoofers.
cannot be operated solely from the keyboard.
of your sources.
❍ Which DSP preset you want as the default preset for each
To install the Meridian Configuration
program
● Insert the first Meridian Configuration program installation
disk.
● Choose Run... from the Start menu.
● Type A: setup and press R.
● Follow the on-screen instructions, inserting the second
installation disk when prompted.
source and audio format.
Configuring the digital surround processor using a computer
Requirements
83
Configuring the digital surround processor using a computer
84
To run the Meridian Configuration
program
● Click Start, point at Programs, then click Meridian
Configuration.
Button
Option
Function
New
Creates a new settings file.
Open
Opens an existing settings file.
Save
Saves the current settings file to
disk.
The Meridian window will be displayed:
Fetch
Fetches the current configuration
of the attached product(s).
Store
Stores the current settings and
User Types to attached products.
Disconnect
Disconnects the program from
attached products.
Add product
Adds a product to the current
settings.
Copy
The toolbar provides a convenient way of accessing the most
Copies text or settings onto the
clipboard.
important menu options:
Paste
Pastes text or settings from the
clipboard.
About
Displays program information.
The serial cable is symmetrical, and can be connected either
way round.
● Connect one end to the RS232 connector on the back panel
of the 568.2 Digital Surround Processor.
● Connect the other end to one of the serial ports on the PC or
PC notebook computer.
Then specify the serial port you are using as follows:
● Choose Options from the View menu to display the Options
dialogue box:
● Select the port you want to use and click the OK button.
Configuring the digital surround processor using a computer
To connect the serial cable
85
Configuring the digital surround processor using a computer
Creating a new settings file
86
The section explains how to create a new settings file, using the
A new settings file will be created for you, with the initial name
Meridian Configuration program, and how to enter personal
MSF1, and the Meridian window will show a Surround
information to identify the settings in your product.
processor icon to identify the product you are configuring:
The first step is to fetch the initial settings from the digital
surround processor, to use as a starting point for your
configuration.
● Click the Fetch button in the toolbar:
The Progress dialogue box will show you the progress as the
settings are fetched:
● Check that the correct product version number is displayed in
the Product version drop-down menu.
● Choose Save As from the File menu, enter an appropriate
name for the file, such as your name, and click the Save
button.
To enter your personal details
● Double-click the Surround processor icon, to open it and
● Click the Owner icon in the left-hand panel.
display the settings it contains.
The left-hand panel of the Meridian window will change to show
the following three icons:
● Enter any text you like in the Dealer, Owner, and Description
fields.
You can enter up to 12 characters in each field, the size of the
568.2 front panel display:
Owner lets you enter personal information, for future reference,
and choose the message displayed when you first switch the
unit on, and Settings is the initial configuration in the settings
file.
The Owner text will be displayed when you turn the 568.2 on.
The Dealer and Description text are displayed after the product
version and serial numbers if you press the front panel Display
Double-clicking Return to top level takes you back to the
previous level.
key in standby.
Configuring the digital surround processor using a computer
To display the settings
87
Configuring the digital surround processor using a computer
88
The options on the Advanced tab are for use by dealers in
setting up multi-room systems, and to upload a new version of
the software to the product, and it is recommended that you do
not change these settings.
To display or edit the settings
● Double-click the Settings icon.
The Meridian window will change to show the four categories of
settings contained in the settings file: Setup, Speakers,
Sources, and Presets.
The options available in each case are explained in the following
sections.
At this stage you may find it useful to maximise the Meridian
Configuration program window so you can see all the options on
each screen.
Setting up speakers
program to configure the 568.2 Digital Surround Processor for
● If necessary click the Layout tab to display the Layout page
of speaker settings:
the configuration of loudspeakers in your system, and specify
information about the type of each speaker, for optimum
performance.
The first stage in setting up the speakers is to specify the
number of speakers in the layout, and the type and size of each
speaker.
The 568.2 Digital Surround Processor can support up to eight
analogue or digital loudspeakers.
To specify the speaker layout
● Click Speakers in the left-hand panel of the Meridian
window.
● Specify the type of each speaker by selecting the appropriate
option from each of the drop-down menus.
As you change the options the layout illustration will change to
Configuring the digital surround processor using a computer
This section describes how to use the Meridian Configuration
show the resulting layout.
89
Configuring the digital surround processor using a computer
If you select a combination of options that is not supported, the
a good bass response and you want to use one or more
whole configuration is valid.
subwoofers to handle the bass for the system.
For example, if you specify Two rears and two sides, and then
select two subwoofers, the side speakers will be removed to
allow you to have the subwoofers.
If you specify 96.24 DSP for the left, right, and centre speakers,
an additional Meridian High Resolution setup option allows you
to specify when to use Meridian High Resolution; see Changing
the setup options, page 101.
The options available for the Mains, Centre, Surrounds, and
Subwoofers drop-down menus are explained in the following
sections.
Mains
Use the Mains drop-down menu to specify the size and type of
the main Speakers.
● Choose Large if your main left and right speakers are large,
with good bass performance, and you want to use them for
full range reproduction.
90
● Choose Small if your main left and right speakers do not have
other options will be adjusted accordingly to ensure that the
● Choose analogue DSP or 96.24 DSP according to the type of
each speaker.
The following table gives recommended settings for Meridian
loudspeakers:
Loudspeaker
Recommended setting
DSP8000, DSP5500HC
Large 96.24 DSP
DSP5000, DSP5500,
Large DSP or Large 96.24 DSP *
DSP6000, or DSP6000C
DSP5000C
Small DSP or Small 96.24 DSP *
M60
Large analogue
M60C, M33, or A500
Small analogue
DSP33
Small 96.24 DSP
* 96.24 versions.
Use the Centre drop-down menus to specify which presets use
the centre speaker, and its size and type.
speakers and side speakers you have in your surround
system.
● Use the Sides and Rears drop-down menus to specify the
● From the first drop-down menu choose one of the following
type of the side and rear speakers.
options:
Subwoofers
Option
Description
None
If you do not have a centre speaker.
Movies only
If you want to use the centre speaker for
Logic and 5.1 Movie DSP presets only.
Movies and music
● Use the Subwoofers drop-down menus to specify the
number of subwoofers, and the DSP presets that use them.
If your main left and right speakers are small you will need to use
one or more subwoofers to handle the bass. You can choose
If you want to use the centre speaker for
between appropriate combinations of mono (front), centre, left
all presets.
and right, or surround.
● From the second drop-down menu specify the type of the
centre speaker; the options are as for the main speakers.
If your main left and right speakers are large you can use one or
more subwoofers to augment the bass from the centre channel.
With 5.1 sources an additional option is to use the subwoofer
Surrounds
Use the Surrounds drop-down menus to specify the number
and type of the surround speakers.
only for the LFE channel.
You can specify a different subwoofer configuration for Music,
Logic, and 5.1 Movie DSP presets.
Configuring the digital surround processor using a computer
● From the first drop-down menu specify the number of rear
Centre
91
Configuring the digital surround processor using a computer
92
The Advanced checkbox is for dealer use only, and it is
This allows you to set up speaker protection for the 5.1 sources,
recommended that you leave this unchecked unless you have
the type of each subwoofer, and peak-level limiting.
special requirements.
Speaker protection
To specify the speaker sizes
● Once you have specified the speaker layout for you system,
click the Sizes tab to display the Sizes page of speaker
settings:
Because of the high bass levels that 5.1 materials are capable of
reproducing, the digital surround processor allows you to set up
automatic protection of each full-range speaker or subwoofer.
A setting of Max corresponds to no protection, and 0
corresponds to full protection. By default any Meridian DSP
loudspeakers in your system are set to Max, as these include
built-in protection.
You can use SizeCalc to help you calculate the correct value for
your speakers:
● Click the Size calculator button to display the SizeCalc
window:
the size of each unit, and the design of the speaker.
The size value is displayed in the SizeCalc display.
● Type the size into the appropriate field.
If you prefer you can copy and paste the size directly.
Subwoofer filtering and type
Peak-level limiting
The Max SPL or Bass limit parameter allows you to set up
peak-level limiting for bass signals, and the setting applies to all
the discrete digital DSP presets.
If your loudspeaker layout includes one or more subwoofers the
parameter is named Max SPL, and it sets the peak-level limit for
the LFE channel.
If your loudspeaker layout contains no subwoofer the parameter
For each subwoofer in the system you can specify the
is named Bass limit, and it sets the peak-level limit of the bass
subwoofer filtering, and its type.
signal added to the main loudspeakers. For loudspeaker layouts
using Meridian DSP loudspeakers as the main left and right, or
● Specify the filtering from the following options:
centre speakers, the Bass limit value is fixed at -11dBFS and
you cannot adjust it.
Option
Description
Narrow
The digital surround processor
Wide
To complete the speaker setup
provides a low-pass cutoff; the
You have now completed the first stage of setting up the 568.2,
subwoofer’s crossover should be
and you should save the changes you have made by choosing
bypassed. This is the recommended
Save from the File menu. You can ignore the Distances,
option.
Crossovers, Precision, Phase/Gain, and Connections pages
The subwoofer includes a crossover.
● Specify the type of subwoofer as Analogue or DSP.
of settings for the moment; these will allow you to check the
values you have set up when you calibrate the digital surround
processor.
Configuring the digital surround processor using a computer
● Specify the number of bass units in each speaker (woofers),
93
Configuring the digital surround processor using a computer
Setting up sources
94
This section describes how to use the Meridian Configuration
To configure the source options
program to configure the sources provided by the digital
surround processor.
To set up sources
● Select the source in the list of sources.
● Click the Options tab:
● Click the Sources icon in the left-hand panel of the Meridian
window.
The right-hand panel shows a list of the 12 sources that are
available. For each source you can display two pages of settings
by clicking on the Options or Advanced tabs.
● Select Source exists if you want to use this source.
This enables the source to select automatically between one of
you press the Source key, or the corresponding source key on
four alternative presets depending on the type of material you
the Meridian System Remote.
are playing: Music 2 (two-channel music), Music 6 (multi-channel
music), Movie 2 (two-channel movie soundtrack), or Movie 6
● If you want, you can change the name displayed when the
source is selected by editing the Name field.
The name can consist of up to five letters, digits, or the
characters space, full-stop, and minus. The name you specify is
shown in the list of sources followed by the Meridian System
Remote key used to select the source in brackets.
To set up an enhanced source
If you have a suitable source, such as the 598 DVD Player,
connected to the 568.2 via the MHR Smart Link, you can
designate one of the 12 sources as an enhanced source to take
advantage of the additional content information provided by the
MHR Smart Link.
(multi-channel movie soundtrack):
Configuring the digital surround processor using a computer
Disabling this options prevents the source from appearing when
95
Configuring the digital surround processor using a computer
96
Presets
● In the Presets section specify the DSP preset you want to use
for each of the five alternative audio formats: PCM, Dolby
Digital, MPEG, DTS, or Discrete.
Each drop-down menu gives the built-in and user-defined DSP
presets appropriate for that audio format.
Audio
● From the Audio input drop-down menu specify the digital or
analogue audio input you want to use for the source.
The Audio input option can be set to Last valid to leave the
input unchanged when you select the source. This allows you to
create a source that changes some other aspect of the current
source, such as its DSP preset, without changing the selected
input.
If you have specified a digital input for the main audio input:
● Specify the precision for the source by choosing an option
from the Precision drop-down menu.
All CDs and LaserDiscs are currently 16-bits. The 518 and 800
DVD/CD Player provide 24 bits. If in doubt choose 24-bit.
For analogue inputs the precision is automatically set to 24-bit.
To set the advanced source options
● Click the Advanced tab to show the Advanced page of
settings.
Comms type to 1C for a Meridian CD player, 2C for a
Meridian FM tuner, and 3C for a Meridian DVD player.
Otherwise set it to none.
Option
Description
Number of video frames of
Adds a delay required by
delay to apply to audio
certain video systems.
Poor digital audio source –
Select this if you have difficulty
frequency out of range
locking to the source.
can then select the appropriate source by specifying its
Source uses validity flag
May reduce switching noise
Comms address in the Comms address field.
properly
● If you have two Meridian source units of the same type you
can configure them to have different Comms addresses. You
The following additional options are available. You should only
change these with advice from your dealer:
Option
Description
Delay for audio sources to
Avoids the noise caused by
avoid DTS noise (DTS delay)
switching to a DTS audio
source.
Only ever play DTS for this
Creates a video DTS source
source (two-channel
that will avoid any DTS noise
sources only)
when switching audio formats.
Force this source to be
Select this to avoid automatic
six-channel (multi-channel
preset switching if you are
sources only)
using a non-Meridian source
on certain sources where this
is a problem.
Configuring the digital surround processor using a computer
● If the source is connected to another Meridian unit, set
on the MHR Smart Link input.
97
Configuring the digital surround processor using a computer
Configuring presets
98
The 568.2 Digital Surround Processor provides 24 built-in
To modify a built-in preset
presets and the Meridian Configuration program lets you
configure the DSP parameters of any of the built-in presets to
● Select the preset in the list of presets.
suit your own preferences.
The default DSP parameters will be displayed:
You can also create up to 10 additional user-defined presets.
Each user-defined preset is based on one of the built-in presets,
and can have any name of your choice.
To set up presets
● Click the Presets icon in the left-hand panel of the Meridian
window.
The right-hand panel shows a list of the 24 built-in presets, and
the 10 unused user-defined presets.
● Adjust the parameters as required.
The new preset is created in the first available space after the
your system includes DSP loudspeakers, because in this case
built-in presets.
the DSP speakers handle the treble and bass adjustments.
● Select the new preset you have created.
For more information about the DSP parameters available for
each DSP preset see DSP presets, page 37.
If you have modified the DSP parameters from their defaults,
(modified) is displayed after the preset name in the list of
presets.
To restore the DSP parameters to
their defaults
● Select the preset in the list of presets.
● Click the Reset to default button.
To create a user-defined preset
● Select the preset you want to use as the basis for the userdefined preset.
● Click the Copy as new preset button.
● Edit the preset name to identify the preset.
Initially the name is set to be the same as the built-in DSP preset it
was based on, but you can chose any name of up to eight letters,
digits, or the characters space, full-stop, or minus; eg Football:
Configuring the digital surround processor using a computer
Note: That the treble and bass settings will not be available if
99
Configuring the digital surround processor using a computer
100
To delete a user-defined preset
● Select the preset in the list of presets.
● Click the Delete this preset button.
To copy a preset to a specific position
in the list of user-defined presets
● Highlight the preset you want to copy.
● Choose Copy from the Edit menu, or click the
Copy button in the toolbar:
● Highlight the user-defined preset or empty position you want
to replace.
● Choose Paste from the Edit menu, or click
the Paste button in the toolbar:
Changing the setup options
The options are described in the following table:
Setup options.
To change the setup options
● Click the Setup icon in the left-hand panel of the Meridian
window.
The Setup options will be displayed:
Option
What it means
Lock settings on
Locks the DSP preset parameters.
product
On-screen display
Specifies the default position of the
position
on-screen display.
Multi-room displays
Includes displays of information from
Meridian sources; eg CD track number or
FM tuner frequency.
Diagnostic displays
Includes diagnostic displays in the
display options.
Fan
Sets the fan operation, if fitted.
Volume on startup
Specifies the startup volume; only
available for analogue speakers.
Comms controller
Specifies whether the 568.2 is controller,
status
not controller, or set automatically.
System and Copy
For multi-room setups.
address
Configuring the digital surround processor using a computer
The final stage in editing the settings is to configure the general
101
Configuring the digital surround processor using a computer
102
Option
What it means
Meridian DVD present
If selected, the <, >, V, A, Store,
and Clear keys on the Meridian
System Remote operate the DVD
player menus rather than the Digital
Surround Controller menus.
Meridian High Resolution
Specifies whether the digital output
uses Meridian High Resolution for
all sources, or only when necessary.
This option is only available if the
left, right, and centre speakers are
96.24 DSP types; see To specify the
speaker layout, page 89.
Module installed
Specifies whether the multi-channel
input card is fitted.
Calibrating the settings with your system
your system, the next step is to store the settings to the 568.2
To store the settings to the digital
surround processor
and use the calibration listening tests built into the 568.2 to
calibrate it for correct performance.
● Switch on the 568.2 Digital Surround Processor, and check
that the serial cable is connected between the 568.2 and the
To save the settings
First save the settings to your PC hard disk.
PC.
● Click the Store button in the toolbar:
● Choose Save from the File menu, or click the
Save button in the toolbar:
To print a summary of settings
At this stage it is useful to print a summary of the speaker and
Receiving...
The 568.2 will display:
The following Progress dialogue box shows how the operation
is progressing:
source settings, so that you can check that they correspond to
your system configuration.
● Check that there is a printer connected to your PC.
● Click the Settings icon in the left-hand panel of the Meridian
window.
● Click the Print sources and output summary button.
If there is a problem click the Details>> button to see more
information about the problem.
Configuring the digital surround processor using a computer
Once you have edited the settings to suit the configuration of
103
Configuring the digital surround processor using a computer
104
When the download is complete the 568.2 will automatically
To fetch the calibrated settings
reset itself to use the new settings, and show the owner name
you defined.
Finally fetch the calibrated settings back from the digital
surround processor as follows:
Zachary Ford
For example:
● Make sure your settings file is loaded into the Meridian
Configuration program.
To calibrate the loudspeakers
Now proceed through the calibration procedure to set the
correct relative level, delay, and phase for each of the
loudspeakers in the system. See Calibrating the system,
● Click the Fetch button in the toolbar:
The Progress dialogue box will show you the progress as the
settings are fetched:
page 71.
You can verify that the calibrations you made are now included
in the settings by checking the Distances and Phase/Gain
pages of the Speakers settings option.
Creating a User Type
To name the User Type
surround processor, the final step is to store them permanently
to the 568.2 as a User Type, so that you can reset the unit to
them whenever you need to.
● Click the Settings icon in the left-hand panel of the Meridian
window:
When you store one or more User Types to the 568.2 they
become available in the list of Types, alongside the built-in
Types. For more information about selecting one of the Types
see Choosing a standard setting, page 68.
● Enter a suitable name in the Type name field to identify your
User Type, such as Standard.
The name can have up to 12 characters.
Configuring the digital surround processor using a computer
Once you have fetched the calibrated settings from the digital
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Configuring the digital surround processor using a computer
106
To create additional User Types
Initially the new type will be created with the same settings as
the type you based it on, and with the name New type:
If you wish you can create several User Types, and store them
all to the digital surround processor. You can then reset the
digital surround processor to any of the User Types by selecting
the appropriate Type name.
To create a new User Type:
● Select the User Type you want to base it on in the left-hand
panel of the Meridian Setup window; eg Standard.
● Click the Copy as new user type button.
The new User Type will be specified as In use, as
identified by the circle icon in the left-hand panel
You can then change the name of the new Type, and configure
of the Meridian window:
its settings, in exactly the same way as for the original Type.
A suggested naming convention is to name User Types with the
date they were created: for example, 06/05/98.
● Highlight the User Type you want to copy the settings from.
● Choose Copy from the Edit menu, or click
the Copy button in the toolbar:
● Highlight the User Type you want to copy the settings to.
● Choose Paste from the Edit menu, or click the
Paste button in the toolbar:
You can also copy and paste source and preset settings from
one section of a user type to the same section of another user
type as follows:
● Highlight the icon corresponding to the section of settings you
want to copy: Sources or Presets.
● Choose Copy from the Edit menu, or click the
Copy button in the toolbar:
● Highlight the same icon in the User Type you want to copy to.
● Choose Paste from the Edit menu, or click the
Paste button in the toolbar:
Configuring the digital surround processor using a computer
To copy settings between User Types
107
Configuring the digital surround processor using a computer
Completing the configuration
108
The final stage in creating a settings file is to save it, and then
If the download was successful the 568.2 will briefly display the
store it to the digital surround processor.
owner name you have defined.
To save the current settings
Zachary Ford
For example:
● Choose Save from the File menu or click the Save toolbar
button, to save the changes you have made to the
It will then switch itself to standby.
settings file to your PC hard disk:
The User Type you have created will now be available in addition
To store the settings to the 568.2
Digital Surround Processor
to the built-in Types, and will be selected by default if you need
to reset the configuration of the digital surround processor; see
Choosing a standard setting, page 68.
● Click the Store button:
The settings will then be downloaded
Receiving...
to the 568.2. The 568.2 will display:
As the download proceeds the following dialogue box shows its
progress:
Troubleshooting
This chapter provides suggested solutions to typical problems that may
occur when setting up the digital surround processor.
If you are still not able to resolve a difficulty with the help of this guide and
the suggestions in the following pages, please contact your Meridian
dealer or Meridian Audio Ltd.
Troubleshooting
109
General operating problems
Standby point not lit
Remote not working
Check the following:
Check the following:
❍ There is AC power connected to the socket on the rear of the
❍ The battery in the Meridian System Remote.
568.2.
❍ The power switch on the rear panel of the 568.2 is turned on.
❍ Remove the 500 Comms connections from the 568.2, does it
respond now? If so, replace the connections and perform an
Auto Configure procedure as described opposite.
If the 568.2 will still not illuminate, check any fuses in your power
❍ See if the 568.2 has been set up as not controller in the
supply and the fuse in the inlet of the 568.2. If these are all
Meridian Configuration program; see Changing the setup
intact, contact your dealer.
options, page 101. Note: This may be deliberate by your
dealer.
Erratic or unexpected system
behaviour
When playing a Dolby Digital DVD, the
568.2 selects the Pro Logic preset
Redo the Auto Configure process as follows:
Troubleshooting
DVDs include a two-channel Dolby Digital soundtrack, which will
110
❍ Put the whole system into standby.
use the default two-channel preset.
❍ Press Clear on the Meridian System Remote.
❍ Observe all units responding correctly.
❍ Select a six-channel soundtrack, if it is available.
If this fails, the memory of the 568.2 may have been corrupted. If
Unit is overheating
this is suspected perform a full reset; see Choosing a standard
setting, page 68.
If there is not adequate ventilation around the unit, or you are
operating it in an enclosed space, you will need to fit the
optional Fan kit.
Audio problems
Hum on analogue input
❍ Ensure that the receiver uses well-screened antenna cable.
❍ Relocate the receiver with respect to the 568.2.
There is no reason for the 568.2 to produce hum on the
❍ Connect the receiver and this product to different AC outlets.
analogue input.
❍ If the problem persists contact your dealer.
❍ Check the source equipment. Disconnect each source in turn.
Audible hiss at high volume settings
❍ If the hum originates from a ground loop, an antenna or cable
supply may be the cause. In this case an antenna-lead isolator
The input dynamic range of most current recordings is at
should be fitted.
maximum 16 bit. The reason for this is that currently CD, DVD,
❍ If the 568.2 seems to be the cause of hum consult your
dealer.
and LaserDisc use a 16-bit standard although DVD can support
up to 24-bits. The analogue sources you have cannot achieve
this kind of range. For comparison, analogue sources are likely
There is radio interference
to be of the order of:
The 568.2 is a digital audio and computing device which has
❍ VCR, 12 bits.
been designed to very high standards of electromagnetic
❍ FM radio, 13 bits.
compatibility.
❍ Reel to reel tape, 13 bits.
cable of the receiver as far as possible from the 568.2 and its
stylus is not in the groove; similarly tape will be quieter when it is
Troubleshooting
❍ Cassette tape, 12 bits.
cabling.
stopped. CD may also be quieter when it is stopped, producing
111
If this equipment does cause or suffer from interference to/from
❍ LP, 11 bits.
radio or television reception then the following measures should
be tried:
Note: There may be a difference between the dynamic range of
the source channel when it is operating, and the noise you hear
❍ Reorient the receiving aerial (or antenna) or route the antenna
in standby. For example, LP normally has lower noise when the
so called ‘digital silence’.
The 568.2 has a 24-bit capability on its internal analogue-to-
Sound not clear
digital converter, which is used for analogue sources. When the
volume is turned up high you may hear its dither as a hiss when
❍ If speech sounds muffled in a system with a centre speaker,
the sources are stopped. This hiss is lower than the background
check that sound is coming from the centre as there may be a
noise of your recordings and should be of no consequence.
connection problem. In a digital or Meridian feed to the centre
you may have set it up to be right instead of left so that it is
The 568.2 has 24-bit output precision on the analogue outputs.
playing a subwoofer signal.
❍ If speech sounds muffled in a system with no centre speaker,
Other sources of hiss may be tracked down using the Mute
you may have selected a layout that expects one. See To
option. When muted the outputs are reduced to the dither at the
specify the speaker layout, page 89.
selected precision.
Centre not working
Crackling on optical inputs
There may be a connection problem.
Some optical sources, in particular some LaserDisc players,
Troubleshooting
provide poor drive waveforms that do not meet the EIAJ
112
❍ In a digital or Meridian feed to the centre, you may have set it
standard. This is because the light modulates but never goes
up to be right instead of left, and therefore it may be playing a
quite ‘black’ between pulses. If you experience crackling on the
subwoofer signal.
optical input or an occasional reluctance to lock, ie provide a
sound, investigate as follows.
❍ Try other fibres.
❍ Pull the fibre part-way out and see if the problem clears up.
❍ Try another player or CD player on the optical input.
❍ Contact Meridian for up-to-date advice on this point.
There is a hiss when starting DTS
LaserDiscs
Cinema preset is not available
Because the Cinema preset is a user preset based on Discrete it
The DTS audio stream is indistinguishable from a PCM audio
is possible to delete it.
stream; the 568.2 takes 30ms to identify the encoding, during
which a hiss is heard.
❍ Create a new preset from Discrete and name it Cinema.
❍ Assign it to Movie 6 for the enhanced source.
❍ With non-video DTS sources you can add a 30ms delay to
avoid this.
❍ With video sources you can create a DTS-only source to avoid
any hiss.
The preset changes unexpectedly
with a multi-channel source
If you are using a non-Meridian source on the MHR Smart Link
input, proprietary data may cause preset switching.
See To set the advanced source options, page 96.
Troubleshooting
❍ Select Force this source to be six-channel for the source.
113
Video problems
Poor picture quality
Picture quality may suffer if you do not attend to the following:
❍ Are you using suitable quality cables with good connectors?
❍ Is there a ground loop created between any of the
components connected to the 568.2?
Remember that reception of broadcast or cable signals can be
significantly deteriorated by cross-modulation in the RF domain.
It is unwise to attempt to cascade and mix several video
Troubleshooting
sources, eg LaserDisc, VCR, etc, to an antenna system.
114
Meridian Configuration program problems
Preset options do not appear or are
not available
Meridian Configuration program
repeatedly fails to talk to the product
The options available when you are editing the DSP preset
❍ Check that you have selected a COM port.
parameters depend on the speaker layout you have defined in
❍ Check that no other program currently running is using the
Speakers.
COM port.
❍ Check that it is connected correctly.
❍ If you have any DSP speakers in the layout, treble and bass
are not available.
❍ The Speakers options for Centre, Sides, and Rears can only
be edited if your layout includes the corresponding speakers.
❍ Turn off the 568.2 for a few seconds and turn back on, then
retry.
❍ Quit from all other programs and retry.
❍ Reboot the computer and retry.
❍ Ensure you are using the serial lead supplied with the product,
or a null modem cable.
❍ If you are using a laptop try turning off the screensaver or
power management software.
Troubleshooting
115
Service and guarantee
Service
Guarantee
The Meridian 500 Series of hi-fi components have been carefully
The 568.2 Digital Surround Processor is guaranteed against
designed to give years of untroubled service. There are no user-
defects in material and workmanship for two years from the date
serviceable parts inside the case, nor do the units require any
of purchase.
form of maintenance.
The guarantee is void if the 568.2 Digital Surround Processor
In the unlikely event that your 568.2 fails to function correctly, it
has been subject to misuse, accident, or negligence, or has
should be returned, in its original packaging, to your Meridian
been tampered with or modified in any way without the written
dealer.
authorisation of Meridian Audio Limited. Note: Connecting
anything other than the correct network lead to the COMMS
In case of difficulty within the UK or USA please contact the
sockets may cause damage to the 568.2 Digital Surround
appropriate sales and service address shown on page ii.
Processor which will not be covered by this guarantee.
Attempted servicing by unauthorised people may also invalidate
In case of difficulty outside the UK or USA, contact the importing
this guarantee. Labour and carriage charges are not covered
agent for the territory. A list of Meridian agents abroad is
unless by local agreement.
Troubleshooting
available from Meridian Audio.
116
Outside the UK, local warranty liability is restricted to equipment
No responsibility can be accepted for the 568.2 whilst in transit
purchased within the territory. Our agents abroad are only under
to the factory or an agent, and customers are therefore advised
contractual obligation to service under guarantee equipment
to insure the unit. When seeking service under guarantee, proof
sold through them. They are entitled to make a non-refundable
of the date of purchase will be required.
charge for any service carried out on other equipment.
This guarantee does not limit your statutory rights within the
United Kingdom.
Glossary
Absolute phase
Controller
Dolby Surround
A control which changes the phase of the
The product in a Meridian system that
The encoding system used for the majority
signals to all the speakers.
uses the infra-red signals from the remote
of movies on video and many TV
to control the system. The controller is
broadcasts. Dolby Surround encoded
normally chosen automatically, but the
material can be replayed with a surround
installer can override this.
decoder connected to an array of
AC-3
loudspeakers which normally include at
An alternative name for the Dolby Digital
format.
Dolby Digital
least left, centre, right, and rear surround.
Ambisonics
A digital surround-sound which provides
DTS
five full-frequency range channels (left,
A music encoding and decoding system
centre, right, left surround, and right
Digital Theatre Systems originally
designed to re-create the original sound
surround) and an additional Low
produced digital audio tracks for motion
field using an array of loudspeakers.
Frequency Effects (LFE) channel which is
pictures. A version of this format adapted
band limited to 120Hz.
for consumer video and audio products is
Aspect ratio
referred to as DTS Entertainment. Like
Dolby Digital it provides five full-frequency
The overall shape of the speaker layout.
range channels (left, centre, right, left
surround, and right surround) and an
additional Low Frequency Effects (LFE)
channel.
A DSP parameter providing dynamic range
control for Dolby Digital sources.
Glossary
Compress
117
DVD
DVD-Video
LFE sub
Digital Video Disc or Digital Versatile Disc,
A DVD containing video tracks together
A subwoofer which plays the full 120Hz
a versatile CD-sized disc with nearly 30
with one or more soundtracks, menus, and
bandwidth LFE signal in Dolby Digital,
times the storage capacity of CD. It is
other entertainment features.
DTS, and MPEG presets.
Layout
Limit
Refers to a particular arrangement of
A DSP parameter that sets the peak-level
speakers and subwoofers. You can select
limit of the bass signal added to the main
different layouts for the cinema, music,
loudspeakers.
capable of storing digital video, highquality multi-channel audio, or computer
data.
DVD-Audio
A DVD disc containing audio tracks in one
and 5.1 DSP presets.
Max SPL
or more of a number of alternative formats
to provide higher quality or higher capacity
LFE
Glossary
than CD, multi-channel audio, together
118
A DSP parameter that sets the peak-level
with the option of still images or video. A
The Low Frequency Effects (LFE) channel
DVD-Audio disc may also include lower
which enhances movie soundtracks with
quality versions of the material in DVD-
sound effects and ambient sounds. It is
Video format for compatibility with players
band limited to 120Hz in a Dolby Digital
that do not support DVD-Audio.
system.
limit for the LFE channel.
Menus
The flexible system for choosing options
and configuring settings in Meridian
products. On the 568.2 the menus are
controlled by the <, >, A, and V keys on
the MSR.
MHR
Mono surrounds
MSR
Meridian High Resolution is a proprietary
Surrounds which have a common signal
The Meridian System Remote, or handset.
secure encoding format using encryption
steered to them. This may then be
and anti-copy methods that allows secure
decorrelated by the THX process to give
transfer of audio streams between
more spaciousness.
elements of a Meridian-only system for the
purpose of playback only. It provides a
OSD
On-Screen Display, which the 568.2 can
MPEG
secure copyright protection environment
superimpose on a composite video signal
to give information about the state of the
and has the very important benefit of
MPEG Surround is a digital encoding
lowering jitter and improving sound quality
system developed by the Motion Picture
on all material.
Expert Group. Like Dolby Digital it
system, and to help during configuration.
PCM
provides five full-frequency range
MLP
channels and an additional Low Frequency
Pulse Code Modulation, the method used
Effects (LFE) channel.
to encode music digitally, as used on
MLP (Meridian Lossless Packing) is an
audio format that increases the amount of
audio CDs.
MSF
Preset
information that can be recorded on a CD
or DVD, without any loss of quality.
settings and User Types for one or more
A DSP decoding option in the 568.2. You
Meridian products.
can create user-defined presets based on
the built-in presets, and with specific
A subwoofer which handles all the bass for
parameter values; see Defining your own
the system. A THX standard subwoofer
presets, page 23.
has a crossover at 80Hz.
Glossary
Mono sub
Meridian Settings File, a file containing
119
Smart Link
Steered surrounds
Trifield
A six-channel digital audio stream that can
Surrounds which have individual signals
A music decoding system designed to
connect the 568.2 Digital Surround
steered to them by the digital surround
extract centre and surround signals from a
Processor to a multi-channel source, such
processor’s steering matrix.
conventional two-channel stereo source.
Surround
Type
A sound reproducing system with more
A standard configuration of the digital
than two loudspeakers, and usually with
surround processor. Selecting a Type
speakers behind or to the side of the
resets any configuration and calibration
listener.
changes.
as the Meridian 598 DVD Player. The
Smart Link also provides intelligent stream
content information.
Source
An input to the system, such as CD or TV.
The Meridian 500 and 800 Series provide
12 named sources, corresponding to the
THX
names of the 12 source keys on the MSR.
In the 568.2 you can choose the logo
Additional processing that follows Dolby
displayed for each source, and the input
Pro Logic Surround decoding to give a
used for it.
more faithful reproduction of cinema
sound in the home.
Glossary
SPL
120
Sound Pressure Level, a physical
measurement of the level of sound at a
particular location which can be obtained
using an SPL meter.
Index
A
AC-3 encoding 9
audio outputs 58
crossover frequency, adjusting 78
Academy (DSP parameter) 12, 41
B
accessories 8
Fan kit
Balance (DSP
parameter) 25, 26, 28
8, 55
D
Depth (DSP parameter)
Dialog Normalisation
25, 26, 30
49
Meridian 511 S-patch Box 8
balanced outputs 58
digital audio inputs 57
Meridian 513 Smart Link patch
Bass (DSP parameter) 26, 27
Digital DSP preset 9
bass, changing 27
digital formats, THX 10
built-in presets, changing 34
digital sources, connecting 63
box 8
Meridian 519 Demodulator 8
Dimension (DSP parameter) 45
Rack mount kit 8
C
calibration procedure 72
Direct DSP preset
exiting from 73
Discrete DSP preset
active subwoofer, connecting 62
calibration tests 74
display
Ambisonics B format preset 9
Distance 75
distance calibration test 75
Ambisonics DSP
Fine tuning 76
distance units, changing 72
Levels 74
Dolby Digital DSP preset 9, 47
Centre (DSP
dynamic range control
active loudspeakers,
connecting
preset
61
11, 43, 52
UHJ format
43
analogue audio inputs 57
parameter) 26, 30, 43
12, 46
51
22
48
Dolby Digital encoding 9
analogue sources, connecting 63
centre speaker 30
Dolby Digital THX DSP preset 47
audio formats 20
Cinema DSP preset 51
Dolby Digital THX encoding
Dolby Digital 9, 20
communications connections 58
Dolby Surround encoding
DTS
components 54
DSP loudspeakers. See Meridian
Compress (DSP parameter) 48
10, 21
multi-channel 20
two-channel (PCM)
audio inputs 57
10, 20
DSP loudspeakers
compression 48
DSP parameters
computer, configuring using 81
2+2+2
controller, setting 66
5 Channels
52
44
Index
MPEG
10, 21
10
11
121
DSP parameters (continued)
DSP parameters (continued)
DSP presets (continued)
Academy
Roll 40, 45
DTS THX
Balance 25, 26, 28
S Delay 26, 45
editing name 35
Bass
S Filter
43, 44
Meridian EZ
34
modifying a built-in preset using a
12, 41
26, 27
Centre
26, 30, 43
98
Sides
Compress 48
Steered All 45
Mono
Depth
Surr. Rear 43, 48
MPEG
Treble 26, 27
MPEG Music
25, 26, 30
45
26, 29
12, 41
10, 47
10, 46
Width 43, 44, 45
MPEG THX 47
Input 41
Yaw 40, 45
Music
LFE 48, 52
DSP presets 9, 37
Music Logic 44
LFE cut?
Ambisonics 43, 52
PLII Movie
Limit 48, 49, 52
assigning to sources 33
PLII Music 45
LipSync 26, 32
changing 20
PLII THX
Max SPL
Cinema 51
Pro Logic 39
clearing 36
Pro Logic II
HS Out?
43, 46, 52
52
48, 49
Mono Rear
40, 45
12, 42
39
38, 39
38
configuring using a PC 98
Stereo
Panorama 45
defining
Super Stereo
12, 44
Party?
Direct 12, 46
THX Cinema
40
Phase 26, 27
Discrete 51
THX Surround EX 47
Position 44
Dolby Digital 9, 47
Trifield
R Delay
26, 45
Dolby Digital THX 47
TV Logic
R Filter
43, 44
DTS
DTS DSP preset
OSD
Index
PC
47
changing 25
Dimension
122
saving
47
26, 32
41
Rear 26, 29
23, 34
10, 47
DTS Music 10, 46
12, 46
12, 42
11, 40
10, 47
DTS encoding 10
DTS Music DSP preset
DTS THX DSP preset
DTS THX encoding
10, 46
LFE cut? (DSP parameter) 52
47
Limit (DSP parameter) 48, 49, 52
10
G
DVD player, connecting 64
LipSync (DSP parameter) 26, 32
Meridian 513 Smart Link patch
dynamic range control 48
listening position, moving to the left
locking the menus 24
5.1 Movie DSP presets 47
Logic DSP presets 38
Fan kit 47
loudspeakers
connecting 65
front panel
connecting 60
setting up with
controls 14
setting up using a PC 89
Meridian Analogue Theatre 5
display symbols 22
specifying layout using a PC 89
Meridian comms
specifying the sizes using a PC 92
Meridian Configuration
Max SPL (DSP parameter) 48, 49
installation
menus, locking and unlocking 24
requirements
Meridian 500 Series
running
communications 4
toolbar buttons 84
glossary 117
Controller
69
58, 66
program 82
HS Out? (DSP
Input (DSP parameter)
Meridian 562V Multimedia
41
83
83
84
DSP33 Active Digital Loudspeaker 6
Meridian Digital Theatre 6
inputs, audio 57
DSP6000 Digital Loudspeakers 6
Meridian DSP loudspeakers
interference, avoiding 55
M1500 Active Subwoofer 5
connecting
M33 Active Analogue
using with remote control 16, 25
LaserDisc player, connecting 64
Levels calibration test 74
LFE (DSP parameter)
48, 52
Loudspeaker 5
Meridian 504 FM Tuner,
connecting 63
58, 60
Meridian DVD Player,
connecting
64
Meridian EZ 50
Index
L
box 8
Meridian 519 Demodulator 8
5 Channels (DSP parameter) 44
parameter) 43, 46, 52
I
63
Meridian 511 S-patch Box 8
M
H
connecting
lip sync, changing 32
or right 28
F
Meridian 508.24 24-Bit CD,
123
Meridian EZ DSP preset
10, 47
Meridian High Resolution
(MHR)
3, 102
Meridian M1500 or M2500,
connecting
62
Meridian M33s, connecting
61
Options (View menu) 85
presets (continued)
Options dialogue box 85
Dolby Digital
OSD (DSP parameter) 26, 32
Dolby Digital THX
outputs, audio 58
DTS
overheating 110
DTS Music
Owner icon 87
DTS THX
Meridian System Remote
front panel controls
quick guide
Mix level
49
Mono Rear (DSP
parameter)
40, 45
MPEG
PC, using to configure the
MPEG Music
81
47
MPEG THX
46
10, 47
peak-level limiting 49, 93
Music
personal details, entering using a
Music Logic 44
42
MusicLogic 12
PLII Movie
phase, changing 27
PLII Music 45
MPEG THX DSP preset 47
PLII Movie DSP preset 39
PLII THX 39
MPEG THX encoding 10
PLII Music DSP preset 45
Pro Logic 39
Music DSP presets 12, 42
PLII THX DSP preset 38, 39
Pro Logic II
Music Logic
Position (DSP parameter) 44
Stereo
presets
Super Stereo
44
THX Cinema
40
10, 46
MPEG Surround encoding
muting
Index
Party? (DSP parameter) 41
41
Phase (DSP parameter) 26, 27
MPEG Music DSP preset
124
47
Mono
PC 87
MPEG DSP preset 10, 47
10
44
19
Ambisonics
O
46
10, 47
Panorama (DSP parameter) 45
568.2
12, 41
10, 47
47
Meridian EZ
P
15
16
Mono DSP preset
47
11, 43, 52
39
38
46
On-screen display (OSD) 22
Cinema 51
THX Surround EX 47
changing position
Direct 46
Trifield
Discrete 51
TV Logic
optical input 57
32
42
40
R
Presets icon 82, 98
sample configurations
sources (continued)
Pro Logic DSP preset 11, 39
Meridian Analogue Theatre 5
setting advanced options using a
Pro Logic II DSP preset
Meridian Digital Theatre 6
10, 38
96
setting up
R Delay (DSP parameter) 26, 45
serial cable, connecting 85
setting up using a PC 94
R Filter (DSP parameter)
serial port, specifying 85
standard settings 70
rack mount kit 8
Settings file, creating 86
Sources icon
radio interference 54
Settings icon 87, 88
speakers
Rear (DSP parameter) 26
Setup icon 82, 101
connecting 60
rear loudspeakers
setup options, using a PC 101
setting up using a PC 89
relative delay 31
side loudspeakers
specifying layout using a PC 89
relative level
changing the relative delay 31
Speakers icon 82
rear panel 56
changing the relative level 29
Special sub option
remote 15
Sides (DSP parameter) 26, 29
specification 7
Sine/Sub mode 78
standard settings
Sinewave sweep test 79
choosing
quick guide
43, 44
29
16
requirements (computer
configuration) 83
78
82, 94
68
68
69
SizeCalc 92
sources
Return to top level icon 87
Sound Pressure Level meter 71
standby
Roll (DSP parameter) 40, 45
sources 17
switching on from
room resonances, checking for 79
assigning DSP presets 33
switching to
70
17
18
changing DSP presets 34
Steered All (DSP parameter)
S Delay (DSP parameter) 26, 45
configuring options using a PC 94
Stereo DSP preset
S Filter (DSP parameter)
connecting 63
stereo power amplifier,
S-patch Box 8
safety warnings 55
43, 44
selecting 17
connecting
61
12, 46
45
Index
S
PC
Save As (File menu) 86
125
subwoofers, setting crossover
frequency
two-channel formats (continued)
78, 79
Super Stereo DSP preset
Super Stereo encoding
12, 44
Meridian EZ 10
12
Surr. Rear (DSP parameter)
sweep rate, changing
79
test signals, selecting
80
Pro Logic 11
43, 48
Pro Logic II 10
THX Surround EX 10
Types
T
68
choosing 69
THX Cinema DSP preset 11, 40
standard 70
THX encoding 10
U
THX Surround EX 50
Index
126
UHJ format 43
unpacking 54
THX Surround EX DSP
preset
User Types
10, 47
toolbar buttons 84
copying settings between 107
Treble (DSP parameter) 26, 27
creating 105
treble, changing 27
naming
Trifield DSP preset 12, 42
user-defined presets
troubleshooting
clearing 36
109
105
audio 111
creating 99
Meridian Configuration program 115
deleting 100
video 114
editing names
TV Logic DSP preset
two-channel formats
Ambisonics UHJ
35
11, 40
V
ventilation 55
video connections 56, 59
Ambisonics B 9
11
W
Width (DSP parameter)
Y
Yaw (DSP parameter)
43, 44, 45
Dolby Surround 11
volume 19
40, 45
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