Meridian Audio Home Theater System G61 User Manual

M E R I D I A N

S E R I E S

G 6 1 D I G I T A L S U R R O U N D C O N T R O L L E R

I N S T A L L A T I O N G U I D E

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G61 Digital Surround Controller

Installation Guide

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i i

P r e f a c e

Important safety instructions

• Read the instructions.

To avoid overheating

• Leave at least 10cm around the equipment to ensure sufficient

ventilation.

• Keep these instructions.

• Follow all instructions.

• Do not use this apparatus near water.

• Clean only with a dry cloth.

Do not position the product:

• Install only in accordance with the manufacturer’s instructions.

• Refer all servicing to approved service personnel.

• In direct sunlight.

• Near heat sources, such as a radiator.

• Directly on top of heat producing equipment, such as a power

amplifier.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE

• On a soft surface, such as a carpet, which would obstruct the

ventilation holes in the base.

This apparatus has been designed with Class 1 construction and

must be connected to a mains socket outlet with a protective

earthing connection (the third grounding pin).

The product normally runs warm to the touch.

Radio interference

Safety warnings

FCC Warning: This equipment generates and can radiate radio

frequency energy and if not installed and used correctly in

accordance with our instructions may cause interference to radio

communications or radio and television reception. It has been type-

tested and complies with the limits set out in Subpart J, Part 15 of

FCC rules for a Class B computing device. These limits are intended

to provide reasonable protection against such interference in home

installations.

• Do not expose the product to dripping or splashing.

• Do not place any object filled with liquid, such as a vase, on the

product.

• Do not place naked flame sources, such as lighted candles, on the

product.

To avoid interference

Do not position the product:

EEC: This product has been designed and type-tested to comply

• 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.

with the limits set out in EN55013 and EN55020.

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i i i

C o n t e n t s

Contents

Introduction

Provides information about the digital surround controller,

and technical specifications.

Specifications

DSP presets

Gives details of the DSP presets and their parameters, and

describes how to modify them.

DSP presets

Defining your own presets

Installing the digital surround controller 5

Describes how to install the digital surround controller and

connect it to the other equipment in the system.

Troubleshooting

Provides suggested solutions to problems while installing,

configuring, or operating the product.

Service and guarantee

Communications connections

Index

Configuring the digital surround

controller

Explains how to configure the digital surround controller

using the front-panel controls.

Configuration Wizard

Stage 1: Resetting the product

Stage 2: Configuring speakers

Stage 3: Configuring sources

Stage 4: Configuring other settings

Calibrating the system

Describes how to fine-tune the digital surround controller

to achieve the optimum performance from your sources and

speaker layout.

Introduction

Calibration tests

Speaker size

Using the Sine/Sub/Sens controls

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i v

P r e f a c e

Sales and service in the UK

Meridian Audio Ltd

Latham Road

Sales and service in the USA

Meridian America Inc

8055 Troon Circle

Suite C

Huntingdon

Cambridgeshire

PE29 6YE

Austell

GA30168-7849

USA

England

Tel +44 (0)1480 445678

Fax +44 (0)1480 445686

Tel +1 (404) 344 7111

Fax +1 (404) 346 7111

World Wide Web – http://www.meridian-audio.com/

Boothroyd|Stuart Meridian, Meridian, and Meridian Digital Theatre

are registered trademarks of Meridian Audio Ltd.

This guide was produced by Human-Computer Interface Ltd,

http://www.interface.co.uk/

Designed and manufactured in the UK by Meridian Audio

Ltd. Meridian Audio reserves the right to make changes and

improvements to any of the products described in this document

without prior notice.

Manufactured under license from Dolby Laboratories, Lucasfilm Ltd.

(US patents 5,043,970;5,189,703;5,222,059. European patent

0323830), Trifield Productions Ltd, and Nimbus Records Ltd.

Dolby, Dolby Digital, Pro Logic, AC-3, PLII, PLIIx, AAC, and the

double-D symbol are trademarks of Dolby Laboratories Licensing

Corporation. Lucasfilm, THX, and THX Cinema are registered

trademarks of Lucasfilm Ltd. Surround EX is a jointly developed

technology of THX and Dolby Laboratories, Inc and is a trademark

authorisation. 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.

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.

Part no: G61/1

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I n t r o d u c t i o n

carrying explicit information about the nature of the datastream as

well as encrypted high-resolution digital signals from DVD-Audio

– the first system of its kind to be approved. Virtually all other

manufacturers oblige you to go through an analogue connection,

losing quality in the process.

You can also store separate parameters for each source (such

as DVD) depending on whether the incoming signal is stereo or

surround, so that any source material is played with the DSP mode

of your choice.

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I n t r o d u c t i o n

Specifications

Digital coax inputs

Digital optical inputs

Analogue inputs

Digital outputs

Unbalanced outputs

Trigger outputs

Comms

6 coax digital inputs, 2 6-channel coax inputs, all MHR.

5 optical digital inputs.

5 stereo unbalanced inputs; 1 6-channel unbalanced input.

Main, Centre/Sub, Sides, Rears, A/B*.

†

Main L/R, Centre/Sub, Rears, LZ, RZ .

3 12VDC/100mA trigger outputs configurable by source.

2 5-pin 240º DIN sockets, BNC socket, USB, RS232 interface.

Up to 192kHz, 24-bit Sigma-Delta conversion on all analogue inputs and outputs.

Include Dolby Digital, DTS, MPEG Surround, and AAC.

Conversion

Formats

DSP modes

Direct, Music, Trifield, Ambisonics, Super, Stereo, MusicLogic, Mono, TV Logic, PLIIx Music, PLIIx Movie, PLIIx

THX, Discrete, Cinema, PLIIx Mov6, PLIIx Mus6, THX, THX Surround EX, THX Ultra2 Cinema, THX Music.

Power

Universal supply 100-240V, 50-60Hz, 40W.

Processing

3 Motorola 56367s running at 150MHz to give a total of approximately 450MIPS. 48-bit arithmetic

throughout.

Dimensions

Weight

440mm x 90mm x 350mm (17.32" x 3.54" x 13.78") WHD.

((to be added))

Controls

Front-panel soft keys include control of Source, Preset, etc. Standby and display buttons, volume control,

mute. Full remote control of all features via MSR+.

Display

Multi-character dot-matrix Vacuum Fluorescent Display.

Standby button lit when off.

Indicators

*A/B: Subs if two or three subs are used. Optional ceiling speakers with future software update.

†LZ/RZ: May be chosen to be any pair from: Main L/R, Centre/Sub, Sides, Rears, Subs.

Note: Current software supports a maximum of eight outputs. Future software will support up to 12.

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I n t r o d u c t i o n

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Installing the

digital surround

controller

Installing the digital surround controller

This chapter explains how to install the digital surround controller. It describes what you

should find when you unpack the product, and how you should connect it to the other

equipment in the system.

You should not make any connections to the product or to any other component in the

system while the AC power supply is connected and switched on.

Unpacking

The G61 Digital Surround Controller is supplied with the following

accessories:

• MSR+ remote control with batteries, manual, and spare key caps.

• Meridian Comms lead.

• Power cord.

• This manual.

• Meridian G Series System Guide.

If any of these items are missing please contact your dealer.

Note: You should retain the packaging in case you need to

transport the unit.

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Installing the

digital surround

controller

Audio inputs

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-ULTICHANNEL ANALOGUE INPUTS

$IGITAL COAX INPUTS

-ULTICHANNEL DIGITAL COAX INPUTS

!NALOGUE INPUTS

Use this connector

To connect to this

MULTI DIGITAL INPUT 1 (DVD) or D1-D3,

MULTI DIGITAL INPUT 2 or D4-D6

The multichannel digital output of a source such as the G98DH DVD Audio Transport, or

three digital sources.

DIGITAL INPUT D7 (CD), D8 (DISC), D9

(VCR2), D10-D12

The digital output of a source such as a G08 24-bit Upsampling CD Player or DAB tuner.

MULTI ANALOGUE INPUT (AUX) or A1-A3

A multichannel analogue source such as an SACD player.

ANALOGUE INPUT A4 (TAPE), A5 (TV),

A6 (CABLE), A7 (VCR1)

The unbalanced analogue output of a source such as a tape recorder, TV tuner, cable box,

or VCR.

OPTICAL INPUT O1 (SAT), O2 (GAME), O3-O5 The optical output of a source such as a satellite receiver or computer game console.

The default assignment of the sources to each input is shown in brackets after the input name in the above table. To assign a different

input to a source see Configuring sources, page 20 .

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Installing the

digital surround

controller

To connect to a digital source (eg G07 24-bit CD Player)

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You can connect up to 12 digital coax sources to the G61 Digital

Surround Controller.

If the source is a Meridian product connect together the COMMS

sockets using the Comms lead provided.

• Connect the digital source to one of the digital input sockets of

the digital surround controller, using a 75Ω screened coax phono

lead.

To connect to an analogue source (eg TV tuner)

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You can connect up to eight analogue sources to the G61 Digital

Surround Controller.

• Connect the analogue source to one of the analogue input

sockets of the digital surround controller, using screened coax

phono leads.

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Installing the

digital surround

controller

To connect to a DVD-Audio player with digital multichannel outputs (eg G98DH DVD Audio Transport)

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The G61 Digital Surround Controller provides 12 digital coax

inputs, six of which can be used as two multichannel inputs from

a source with a suitable digital multichannel output, such as the

G98DH DVD Player.

• Connect the MAIN DIGITAL OUT on the G98DH to the MULTI

DIGITAL INPUT 1 on the G61, using three 75Ω screened coax

phono leads.

• Connect together the COMMS sockets using the Comms lead

provided.

To connect to a source with analogue multichannel outputs (eg SACD or DVD-A player)

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The G61 Digital Surround Controller provides eight analogue

inputs, three of which can be used as a multichannel input from a

source with a suitable analogue multichannel output, such as an

SACD player.

You can then select the source corresponding to the multichannel

input (AUX) for playing surround material, and the source

corresponding to the digital input (DISC) to decode other formats.

Note: Multichannel analogue sources may have subwoofer level

outputs that vary by up to 10dB, so it may be necessary to reduce

the LFE level to give correct bass integration; see DSP presets, page

33.

• Connect the ANALOGUE OUTPUT sockets from the source to the

analogue multichannel inputs on the digital surround controller

using six phono leads.

• Optionally connect a digital output from the source to digital

input D8 (DISC) on the digital surround controller, using a digital

phono lead.

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Installing the

digital surround

controller

Audio outputs

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!NALOGUE OUTPUTS

$IGITAL OUTPUTS

Use this output

To connect to this

DIGITAL OUTPUT MAIN L/R, CENTRE/SUB,

SIDES, REARS, A/B

Digital loudspeakers, using digital coax cables.

ANALOGUE OUTPUT LEFT, RIGHT, REAR L, REAR The unbalanced analogue input of a power amplifier or active loudspeakers, using

R, CENTRE, SUB, LZ, RZ screened coax phono leads.

The G61 hardware architecture is designed to process up to 12

completely independent output channels. Currently the software

limits the number of outputs to a total of eight: Main L/R, Centre,

Sub, Rears, and either Sides or two more additional subwoofers.

The G61 provides analogue and/or digital output sockets for these

eight speakers.

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1 0

Installing the

digital surround

controller

To connect the G61 to Meridian DSP loudspeakers

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• Use the Comms part of an M5 lead to connect one of the

COMMS sockets on the G61 to the digital speaker you have

chosen as the master (typically the centre speaker).

• Link each pair of speakers together with an S5 lead, out of

the first speaker and into the second speaker, as shown in the

diagram for the main L&R.

• Use the audio part of the M5 lead to connect the digital speaker

to the appropriate digital output socket.

• Connect the inputs to the first speaker of each additional pair to

the 511 (Comms) and the appropriate output of the G61 (audio),

using an S5 lead.

If the 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.

The speakers should then be configured appropriately as master

and slaves, and Left, Right, Centre, Surround; see Meridian DSP

Loudspeaker User Guide for more details.

• Connect the COMMS output from the master digital speaker to

one socket on the 511 using an S5 lead.

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1 1

Installing the

digital surround

controller

To connect the G61 to active unbalanced loudspeakers (eg Meridian M33s)

M33

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PHONO LEAD

• Connect the appropriate analogue out sockets from the digital

surround controller to the speaker inputs, using phono leads.

To connect the G61 to a stereo power amplifier (eg Meridian G56 or G57)

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• Connect the appropriate analogue output sockets from the digital

surround controller to the stereo power amplifier inputs, using

phono leads.

• Connect the speaker outputs from the stereo power amplifier to

suitable speakers.

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1 2

Installing the

digital surround

controller

To connect an active subwoofer (eg Meridian M1500 or M2500)

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• Connect the SUB analogue output socket from the G61 Digital

Surround Controller to the subwoofer’s line-level input using a

phono lead.

Use RZ and LZ if you have two subwoofers.

The digital surround controller provides a very high-quality

crossover for the subwoofer, and for best results you should use

this instead of the subwoofer’s crossover. To do this remove any

crossover in the subwoofer or set it to its highest setting (eg

200Hz). The subwoofer crossover can be set from the front panel of

the G61; see Subwoofer crossover frequency, page 30.

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1 3

Installing the

digital surround

controller

Communications connections

-ERIDIAN $). # OMMS

-ERIDIAN ".# # OMMS

4RIGGER OUTPUT ꢁ

53" CONNECTION

23ꢄꢌꢄ CONNECTION

4RIGGER OUTPUTS ꢄ ꢋ ꢌ

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)NFRAꢆRED REPEATER INPUT

0OWER ꢋ FUSE

Use this connector

DIN COMMS

To connect to this

Other Meridian G Series, 500 Series, or 800 Series equipment, or Meridian DSP loudspeakers.

Other Meridian G Series equipment or some Meridian DSP loudspeakers.

A computer, for configuring the digital surround controller.

BNC COMMS

RS232 connection

USB connection

IR IN

A computer, in future applications.

A G12 IR Receiver, or approved alternative infra-red repeater. Contact your dealer for details.

TRIG 1, TRIG 2, TRIG 3

Other equipment, via mono 3.5mm jack plug outputs (centre pin hot) providing 12VDC. They are always low

in standby. By default they are high for all sources, so can be used to bring a G56 or G57 Power Amplifier

out of standby. Alternatively you can program them to be high for specific sources; eg to control a projection

screen.

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1 4

Installing the

digital surround

controller

To connect to other Meridian G Series, 500 Series, or 800 Series equipment

'ꢀꢁ $IGITAL 3URROUND # ONTROLLER

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In a system of Meridian products the products should be linked

together in a chain, via the COMMS sockets, using the Comms

leads supplied with each product. The sequence in which you

connect the units is not important.

All the other units will be configured as non-controllers, and

display:

Not Con.

One of the products acts as the controller for the system, receiving

infra-red commands from the MSR+, and then, if appropriate,

relaying them to the other products via the Comms link. The

following procedure should be used to set up the Comms correctly

between several products:

The system is now ready for use.

If the automatic setup does not work, first make sure you are

operating the MSR+ from a position where all the units can receive

the infra-red, and try again. Then:

• Switch all the units to standby.

• Press Clear (MSR+).

• Check that none of the units have been configured to be IR

Controller; see Configuring other settings, page 22. Either all

products should be set to Auto, or one should be configured as

Controller and the others as Not Controller.

Each unit will display:

Auto

Note: Do not, under any circumstances, connect any equipment

other than Meridian G Series, 500 Series, or 800 Series to any

socket marked COMMS on the back of the product.

One unit will then be designated as the controller, and display:

Con.

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1 5

Configuring the

digital surround

controller

Configuring the digital surround controller

This chapter explains how to configure the digital surround controller using the Configuration Wizard.

Alternatively, for complete control over all aspects of the product’s configuration you can set up the unit

from a computer using the Meridian Configuration Program. For full information refer to the Meridian

Configuration Program Guide available separately.

The displays then shows:

Configuration Wizard

The Configuration Wizard leads you through the correct

sequence to configure your digital surround controller. Alternatively,

Version

Wizard Calib Lock

you can skip between the configuration stages, which allow you to

reset the configuration, or configure the sources or other settings

of the digital surround controller.

• Press Wizard.

Follow the sequence of configuration stages described in the

To run the Configuration Wizard

• If necessary press On/Off to put the digital surround controller

into standby.

following pages, pressing Next to proceed after each stage.

At any stage in the Configuration Wizard the following options are

available:

• Press More.

If the product is locked the display shows:

To do this

Press

Back

Go back to an earlier configuration option

Return to the title screen for the stage

Exit from the configuration menus

Display help about the current option

Home

On/Off

Version

Unlock

• Press Unlock to unlock it, then press More.

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1 6

Configuring the

digital surround

controller

Stage 1: Resetting the product

The digital surround controller provides several alternative standard

settings, called Types, which configure all aspects of the product

into the most commonly needed configurations.

• Press A or V to step through the available Types.

A description of the speakers for each type is shown on the top

line of the display. As you select each Type the digital surround

controller is reset to that Type.

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.

When you have selected the Type you want:

To reset the configuration

Either:

• Press Wizard.

• Press Next to proceed to configuring speakers, as described in

the next section.

The display shows the title screen for stage 1:

Or:

Press More for help

• Press On/Off to return to standby.

1: Reset settings

Back

Enter

Skip

• Press Enter to proceed or Skip to go stage 2.

If you pressed Enter the display shows:

Reset all settings?

Back Yes

• Press Yes to proceed or Back to exit.

The display shows the current Type:

7.1, All An, Mono/THX Sub

Type 1

Back Next

óòô

öõú

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1 7

Configuring the

digital surround

controller

Types

The following table lists the available Types:

Type

Speakers

Music Sub

LFE

Logic Sub

Centre

Mono

5.1 Movie Sub

All analogue.

LFE

All analogue.

Mono

LFE

Mono

LFE

All digital.

Centre

None

All digital, large centre.

Digital left, right, and centre.

Digital left and right.

None

LFE

None

LFE

Centre

LFE

Music Sub refers to a subwoofer used for all Music DSP presets, Logic Sub to a subwoofer used for all Logic DSP presets, and 5.1 Movie

Sub to a subwoofer used for all 5.1 Movie DSP presets; see Speaker layouts, page 33.

LFE subwoofer is only active in multichannel presets. Mono and Centre Subwoofers are active in all presets.

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1 8

Configuring the

digital surround

controller

Stage 2: Configuring speakers

The Speakers configuration stage allows you to set up the digital

surround controller for the particular arrangement of loudspeakers

in your system.

The options are summarised in the table on the next page.

To change an option

• Press A or V to step between the alternative values for the

To configure the speakers

option.

Either:

When you have stepped through all the speaker options the display

shows:

• Press Next after resetting the product; see page 16.

Or:

Speaker choice finished.

Back Next

• Press Wizard; see page 15.

• Press Skip to skip past the Reset settings menu.

Either:

The display shows the title screen for stage 2:

• Press Next on the last option of the last speaker to proceed to

Press More for help

configuring sources, as described in the next section.

2: Select speakers

Back

Enter

Skip

Or:

• Press On/Off to return to standby.

• Press Enter to proceed or Skip to go to stage 3.

If you press On/Off before completing the configuration a warning

is displayed, giving you the option of continuing or abandoning the

configuration.

The display shows the first speaker configuration option:

Number of Subwoofers:

one

Back Next

óòô

öõú

• Press Next or Back to step between options.

A description of each option is shown on the top line of the

display, and its current value is shown below this to the right.

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1 9

Configuring the

digital surround

controller

Speaker options

The following table summarises the speaker options:

Option

Values

Description

Number of Subwoofers:

none, one, two, three

How many subwoofers.

The main L&R speakers are: small analogue/THX, small DSP, large The types of the main left and right speakers. If you have no

analogue, large DSP

subwoofers, you cannot specify small main speakers.

When the centre speaker is to be used.

The Centre is used:

always, never, for music, for movies

The Centre speaker is a:

small analogue/THX, small DSP, large The type of the centre speaker.*

analogue, large DSP

Number of Surrounds:

The Side speakers are:

none, two, four

The number of rear or side surround speakers.

small analogue/THX, small DSP, large The types of the side speakers.*

analogue, large DSP

The Rear speakers are:

The Subs are used:

The Sub handles:

small analogue/THX, small DSP, large The types of the rear speakers.*

analogue, large DSP

for movies only, always

all the bass, only the LFE

neutral, heavy

When the subwoofers are used. If you have small main speakers,

the subwoofer must always be used.

Whether to use the subwoofer for all bass or just the LFE channel.

Only available if there is only one subwoofer.

The bass balance is:

Whether the bass is distributed to all the large speakers and

subwoofer (heavy) or just the subwoofer (neutral – recommended).

Only available if there is only one subwoofer, and it handles all the

bass not just the LFE.

The 2 Subs are used for:

The sub is:

Left and Right, Front and Surround

analogue, digital

If there are two subwoofers, their position. Only available if there

are two subwoofers.

The type of subwoofer.

*If you have small main speakers, you cannot specify large centre or surrounds.

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2 0

Configuring the

digital surround

controller

Stage 3: Configuring sources

The digital surround controller provides up to 12 sources

corresponding to the 12 source keys on the MSR+:

The display shows the first source and the first configuration option

for that source, whether it is in use:

This source is:

CD, RADIO, DVD, AUX, DISC, TAPE, TV, CABLE, SAT, VCR1, VCR2,

GAME.

Radio

in use

Source Back Next

óòô

öõú

For each source the Configure sources stage allows you to

configure a series of options, including:

• Press Next or Back to step between options.

The top line of the display shows a description of each option, and

its current value is shown to the right of the source name.

• Whether it is in use.

• The label used for it on the front-panel display.

• The audio input it selects.

When changing the source name, Next and Back step between

• The TRIGGER output level it selects.

character positions.

The procedure for doing this is as follows.

The options are summarised in the table on the next page.

To configure a source

To change an option

Either:

• Press A or V to step through the alternative values for the

• Press Next after configuring speakers; see page 18.

option.

Or:

To move to the next source

• Press Source.

• Press Wizard; see page 15.

• Press Skip to skip past the Reset settings and Select

When you have finished configuring sources:

speakers menus.

Either:

The display shows the title screen for stage 3:

• Press Next on the last option of the last source (Game) to

Press More for help

proceed to configuring settings, as described in the next section.

3: Configure sources

Back

Enter

Skip

Or:

• Press On/Off to return to standby.

• Press Enter to proceed or Skip to go to stage 4.

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2 1

Configuring the

digital surround

controller

Source options

The following table summarises the source options:

Option

Values

Description

The source is:

Audio input:

in use, not in use

Whether the source is enabled.

D1-D12, MD1-MD2, O1-O5, A1-A8,

MA1, Last Valid*

The audio input used for the source; digital, multichannel

digital, optical, tuner, analogue, or multichannel analogue.

Source name:

Trigger #1:

Trigger #2:

Trigger #3:

Comms Type:

Any name of up to five characters.

Trigger outputs for the source.

High, Low

Trigger outputs for the source.

CD 1C, Tuner 2C, DVD 3C, 4C-8C,

No Comms NC

Set to NC unless the source is a Meridian product.

Comms Address:

1A-8A

Allows you to have up to eight of each source type.

*Last Valid leaves the input set to the last input you selected.

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2 2

Configuring the

digital surround

controller

Stage 4: Configuring other settings

The next stage allows you to configure other aspects of the

product’s operation.

To change a setting

• Press A or V to step through the alternative values for the

setting.

To configure other settings

Either:

When you have finished configuring the settings:

• Press Next after configuring the sources; see page 20.

Either:

Or:

• Press Next to proceed to calibrating the system, as described in

the next chapter.

• Press Wizard; see page 15.

• Press Skip to skip past the stages 1 to 3.

Or:

• Press On/Off to return to standby.

The display shows the title screen for stage 4:

Press More for help

4: Other settings

Back

Enter

Skip

• Press Enter to proceed or Skip to go to the calibration

procedure.

The first setting is displayed:

The fan is:

used as necessary

Back Next

óòô

öõú

A description of each setting is shown on the top line of the

display, and its current value is shown to the right of the display.

The settings are summarised in the table on the next page.

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2 3

Configuring the

digital surround

controller

Settings

The following table summarises the product settings:

Option

Values

Description

The fan is:

used as necessary, never used

Specifies how the optional temperature controlled fan

operates.

Distance measurement:

feet/inches, metres

No, THX Ultra2/yes

Units for displaying and entering distances.

Subwoofer frequency response.

Do your subs play to 20Hz?

Boundary Gain Compensation: off, on

Reduces the bass to compensate for listening positions close

to a wall.

Rear speaker separation

<12"/0.3m, 12-48"/0.3-1.2m,

Separation between rear speakers.

>48"/1.2m

Timeout to Home buttons:

Diagnostic displays:

on, off

Whether the soft keys revert to the home keys after a delay.

Whether diagnostic displays are shown.

on, off

Is the G61 IR Controller?

Main System Address

Product Address

Auto, Controller, Not Controller

Whether the product is the infra-red controller for the system.

Advanced setting (normally 1).

1-8

Advanced setting (normally 1).

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2 4

Configuring the

digital surround

controller

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2 5

C a l i b r a t i n g

t h e s y s t e m

Calibrating the system

To help you to set up the installation to give the best possible sound with any particular

combination of associated equipment, the G61 Digital Surround Controller includes a built-in

calibration procedure.

This calibration procedure uses test signals to present a series of sounds, which you use to

adjust certain aspects of the system to their optimum settings.

You should use the calibration procedure the first time you set up the system, and whenever

you want to check the calibration, such as after changing the layout of the room.

Using a Sound Pressure Level meter

Introduction

Although you can perform the calibration procedure by ear, it is

recommended that you perform the tests using a Sound Pressure

Level meter. These are available fairly cheaply from Tandy/Radio

Shack, or your Meridian dealer may be able to lend you one.

We recommend that you perform the calibration procedure using

the MSR+ and from the listening position.

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.

Set the Sound Pressure Level meter to C weighted, and Slow. Take

readings with the meter at the listening position, pointing vertically.

You should hold the meter with an outstretched arm to minimise

reflections from your body.

Each calibration test uses a test signal designed to give the best

results.

You can choose to display and enter distances in either feet and

inches or metres.

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2 6

C a l i b r a t i n g

t h e s y s t e m

To start the calibration procedure

For more detailed information about this and the other calibration

tests see the following sections.

Either:

• Press Next on the last option of configuring settings; see page

To exit from the calibration procedure

22.

You can exit from the calibration procedure at any time, and any

parameters you have set will be retained:

Or:

• Press On/Off to put the digital surround controller into standby.

• Press On/Off.

• Press More.

To complete the calibration procedure

When you reach the end of the calibration procedure the following

display confirms that you have completed the calibration of the

system:

If the product is locked the display shows:

Version

Unlock

Calibration complete.

• Press Unlock.

The display shows:

Back

Restart

• Press Restart to restart the calibration procedure, or Next to

complete the wizard.

The display shows:

Version

Wizard Calib Lock

Press More for help

• Press Calib.

Wizard complete

Back

Exit

Restart

The displays shows Please wait….

Either:

After a few seconds the display shows the first calibration test:

• Press Exit to return to standby.

Press More for help

Or:

Left Level +0.0dB

ìî

ïñ

óòô

öõú

• Press Restart to return to stage 1; see page 16.

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2 7

C a l i b r a t i n g

t h e s y s t e m

Calibration tests

• When you have completed the Levels section press > to proceed

Levels

to the next test.

These tests allow you to adjust the output level to each speaker

individually, and it follows the general guidelines from Dolby

Laboratories and THX.

Distance

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 coincident

when they arrive at the listening position.

In each test the display shows the speaker being tested, and the

current relative level. For example:

Press More for help

Before setting up the speaker outputs you need to measure the

distance to each speaker from the listening position:

Left Level +0.0dB

ìî

ïñ

óòô

öõú

Sub

Centre

Left

Right

• Use > and < to move between each of the speakers in the

layout in the sequence: Left, Centre, Right, Side R, Rear R, Rear L,

Side L, and subwoofers.

• 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 the speakers are not THX

approved this setting is recommended.

Left

Side

Right

Side

If you have Meridian DSP loudspeakers they cannot be set above

+0dB.

Left Rear

Surround Sub

Right Rear

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.

Measure from ear height at the listening position to the tweeter

on each speaker (where applicable), in the distance units you have

chosen; see Settings, page 23.

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2 8

C a l i b r a t i n g

t h e s y s t e m

The next display shows the distance for the same speaker. For

example:

• Use > and < to move between each of the speakers in the

layout.

Press More for help

The display shows the speaker being tested, and the distance:

Left Distance 18'0

ìî

ïñ

óòô

öõú

Press More for help

Left Distance 18'0

Units ìî

ïñ

óòô

öõú

• Choose the correct setting as follows:

Setting

What it sounds like

• Use A and V to change the distance.

Correct

The sound between the speakers is very even, and

does not change radically as you move your head.

• You can press Units to change between feet/inches and metres.

Repeat this for each of the speakers in your layout.

• Press > to proceed to the next calibration stage.

Incorrect

The sound appears diffused, and changes in timbre

and apparent location as you move your head.

Pay particular attention to the centre channel, as this can have a

dramatic effect on the overall sound.

Fine tuning

These tests allow you to fine-tune the phase and delay of each

speaker when used in conjunction with other speakers on the

layout.

• Press > to proceed to the next calibration stage.

• Use > and < to move between each of the speakers in the

layout.

The first display allows you to adjust the phase. For example:

Press More for help

Left Phase

ìî

ïñ

óòô

öõú

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2 9

C a l i b r a t i n g

t h e s y s t e m

Speaker size

These tests allow you to determine the bass handling capability

of large analogue speakers and subwoofers. Once set, the digital

surround controller will limit the bass level to protect the speakers

from potential damage.

On starting the test the speaker sizes are set to zero to avoid the

possibility of damaging the speakers, and the display shows:

Press More for help

Sizes set to zero

ìî

ïñ

óòô

öõú

The display then shows the first large analogue speaker; for

example:

Press More for help

Left Size

ìî

ïñ

óòô

öõú

• Press A or V to adjust the size value for the speaker until it just

begins to distort distinctly, and then reduce the value by one.

• Press > or < to move between each of the speakers to be

adjusted.

This is the last test in the calibration procedure; see To complete

the calibration procedure, page 26.

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3 0

C a l i b r a t i n g

t h e s y s t e m

Using the Sine/Sub/Sens controls

This section explains how to use the Sine/Sub/Sens controls

to check for room resonances, adjust the subwoofer crossover

frequency, or adjust the sensitivity of the analogue sources.

• Press Xovr- or Xovr+ to decrease or increase the crossover

frequency.

The display shows the current crossover frequency:

To display the Sine/Sub/Sens controls

• If necessary, unlock the digital surround controller as described in

Configuration Wizard, page 15.

Xover 85Hz

-Xover+

Sine

-Sens.+

• Press More until the bottom line of the display shows:

For THX loudspeaker systems you should not adjust these settings;

they should be left at 80Hz. 80Hz is also the recommended setting

for all movie listening. You may prefer, however, to lower the

crossover frequency for music if the main speakers have good bass

handling down to, say, 50Hz.

Radio Trifield

Sine/Sub/Sens. StoreClear

• Press Sine/Sub/Sens.

The bottom line of the display shows the Sine/Sub/Sens controls:

Sinewave sweep test

The G61 includes a sinewave signal test, to help you set the

subwoofer crossover frequencies, or check for room resonances. To

avoid possible damage to the speakers the volume is reduced to

50, if necessary, on entering the test.

Radio Trifield

Sine

-Xover+

-Sens.+

Subwoofer crossover frequency

Warning: This test is very loud. Very loud low-frequency

signals may damage the speakers.

The G61 Digital Surround Controller allows the crossover frequency

for any subwoofers which you have to be adjusted between 30 and

150Hz. The crossover can be set independently for Music, Logic,

and 5.1 Movie layouts. The default is the THX standard of 80Hz.

To use the sinewave sweep test

• Select a source, then display the Sine/Sub/Sens controls as

described above.

To adjust the subwoofer crossover frequency

• Select a source, then display the Sine/Sub/Sens controls as

described above.

• Press Sine to turn on the sinewave signal.

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3 1

C a l i b r a t i n g

t h e s y s t e m

The display shows:

To change the volume

• Use the volume keys in the usual way.

Sine

80.0Hz

öõú Sound Exit

To change the input

Chan óòô

• Press Sound.

An 80Hz sinewave will be played through all channels.

You can select between the following inputs:

You can change the test signal using the menu keys, as described

in the following sections.

Option

Input

Sine

Description

The current input.

A sinewave.

To select the channel

Noise

Pink noise, band bass 500Hz to 2kHz for main

channel.

• Press Chan.

Silent

Silence.

You can select any individual channel, or All Channels.

Alternatively you can switch between inputs using the menu keys

on the MSR+.

To change the sweep rate

• Press A or V to change the sweep rate and direction, as

follows:

Display

Description

Fast sweep up.

>> 88.5Hz

öõú Sound Exit

Chan óòô

Slow sweep up.

Paused.

> 81.5Hz

öõú Sound Exit

Chan óòô

Pause 80.0Hz

öõú Sound Exit

Chan óòô

Slow sweep down.

Fast sweep down.

< 78.5Hz

öõú Sound Exit

Chan óòô

<< 70.5Hz

öõú Sound Exit

Chan óòô

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3 2

C a l i b r a t i n g

t h e s y s t e m

The display shows, for example:

Setting up sources

This section explains how to use the Sine/Sub/Sens controls to

2.0V Clip -0

-Xover+

adjust the sensitivity of the analogue sources.

Sine

-Sens.+

To adjust the sensitivity of a source

In this case reduce the sensitivity by selecting a higher number.

To obtain the best signal-to-noise ratio for each analogue source

you can adjust its sensitivity to give the highest level that does not

produce clipping.

If you have selected a digital source you cannot adjust the

sensitivity and the display shows, for example:

• Select the source you want to adjust, with loud source material

playing.

DVD Not Analogue

Sine

• Display the Sine/Sub/Sens controls as described above.

-Xover+

-Sens.+

• Press Sens- or Sens+ to decrease or increase the sensitivity.

The display shows the current sensitivity and the peak level; for

example:

1.4V Peak -3

-Xover+

Sine

-Sens.+

You can adjust the sensitivity between 0.7, 1.0, 1.4, 2.0, and 2.8V

(least sensitive).

If the sensitivity is set too high the input will clip the loudest

passages, and the peak will be 0dB.

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3 3

D S P p r e s e t s

DSP presets

This chapter gives details of the DSP presets and their parameters, and describes how to

modify them.

Layout

Description

DSP presets

Music

For music presets: two-channel (eg Trifield) and

multichannel (eg Discrete).

The G61 Digital Surround Controller provides two types of DSP

preset. One set is available if the input is two-channel; eg from a

traditional stereo source or a two-channel DVD-A. The other set is

available if the input is 5.1 or 6 channels of discrete audio; eg from

a Dolby Digital DVD-V or a music DVD-A. The DSP presets available

in each set are described in the following pages.

Logic

For two-channel movie presets: eg PLIIx Movie.

For multichannel movie presets: eg Cinema.

5.1 Movie

Speaker layouts

The G61 Digital Surround Controller provides great flexibility in

the way in which you use the loudspeakers in your system. For

example, the speaker step of the Configuration Wizard allows

you to use the subwoofers and centre speaker only for movie

material see Configuring speakers, page 18. With the Meridian

Configuration Program you can specify three different speaker

layouts, each with a different use of subwoofers and centre

speaker:

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3 4

D S P p r e s e t s

Standard parameters

All DSP presets (except Mono and Direct) provide the following

standard parameters.

Individual DSP presets provide additional parameters, to allow you

to adjust specific features provided by that preset. For full details

refer to information about each preset later in this chapter.

Parameter

Treble*

Range

Default

+0dB

What it changes

-10dB to +10dB

-5dB to +5dB

+ or -

The slope of the frequency response.

The bass response.

Bass*

Phase*

The phase of all loudspeakers.

The vertical balance.

Axis†

-2 to +3

-1

Balance

HS Output?*

<10 to 10>

Y or N

<0>

The L-R balance.

Select Y for high-rate audio, upsampled if necessary. Select N for

standard-rate audio, downsampled if necessary.

Centre

Depth

Rear

-3.0dB to +3.0dB

-2.5ms to +5.0ms

-30dB to +10dB

0ms to 30ms

+0.0dB

+0.0ms

+0dB

Varies

0ms

The level of the centre.

The delay of the centre.

The level of the rears.

The level of the sides.

The delay of the rears.

The delay of the sides.

The sync. delay.

Sides

R Delay

S Delay

LipSync

0ms to 30ms

*These parameters apply to all DSP presets.

†Axis is only available with Meridian DSP loudspeakers.

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3 5

D S P p r e s e t s

for the fact that the frequency response of human hearing changes

with direction.

DSP presets for two-channel material

The G61 provides several signal processing options for two-channel

material. The Music DSP presets are designed for use with music

from sources such as CD, radio, or two channel DVD-A:

The Music DSP preset is recommended for recordings made with

spaced omnidirectional microphones, or using a mono-surround

technique.

• Music, Trifield, Ambisonics, Super Stereo, Music Logic, PLIIx Music,

Stereo, and Direct.

Trifield

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.

The Logic DSP presets are designed for use with film soundtracks

or TV programmes:

• PLIIx Movie, PLIIx THX, TV Logic, and Mono.

The Music and Logic DSP presets use the Music and Logic speaker

layout respectively; see Speaker layouts, page 33.

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.

Music

The Music DSP preset extracts the mono and surround components

of the original recording. These components provide an alternative

representation of the original sound, and this 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 compensate

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

Parameter

Centre

Options

What it changes

Flat, EQ1-3

The timbre of the centre loudspeaker.

Width†

0-1.5

The width of the image.

Surr. Rear

R Filter

Surr. Rear, Surr. Side, Surr. All

Off, 1kHz, 3kHz, 7kHz

Switches the surround signal between the side and rear speakers.

The cutoff of high frequencies from the rear surrounds.

The cutoff of high frequencies from the side surrounds.

S Filter

†Trifield only.

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3 6

D S P p r e s e t s

Ambisonics

The fundamental difference between Ambisonics surround sound

and conventional stereo is that the signals from all the speakers

combine to produce a coherent soundfield at the listening position,

giving the illusion that you are sitting inside the recording space

whether you are at the exact central seat or well off to one side.

The Ambisonics DSP preset can decode UHJ format, the two-

channel stereo-compatible encoding found on Ambisonically-

recorded discs and broadcasts. This material is specifically encoded

for surround reproduction and can give breathtakingly realistic

sound when replayed using the digital surround controller.

Of all the signal-processing options, Ambisonics is the one that

requires the greatest attention to speaker choice and positioning.

Ambisonics surround sound is quite unlike conventional stereo. A

special microphone technique picks up the sound of the original

performance in all three dimensions, allowing an archive to be

made which describes the soundfield exactly at that position. The

microphone signals are then encoded using a phase-amplitude

matrix to allow the effect to be conveyed on two-channel carriers

(like FM radio, LP, or CD).

Super

Super 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:

The digital surround controller uses accurately matched, frequency-

dependent, phase-amplitude matrices to decode the signal and

construct the signals for each speaker feed.

• Those using true coincident microphone techniques.

• Multi-tracked or multi-miked recordings.

Ambisonics and Super DSP preset parameters

Parameter

Width*

Row†

Options

What it changes

0 to 1

The width of the image.

A, C, E, G, I, K, M

7, 6, 5, 4

The seating position; the letters are like rows in a hall.

The number of speakers.

Channels

R Filter

Off, 3kHz, 7kHz, 9kHz

The cutoff of high frequencies from the rear surrounds.

The cutoff of high frequencies from the side surrounds.

S Filter

*Super only.

†Ambisonics only.

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3 7

D S P p r e s e t s

MusicLogic

MusicLogic is a music DSP preset based on Pro Logic II with

the addition of user-adjustable steering, designed to provide an

exciting experience with many types of studio-produced music.

MusicLogic DSP preset parameters

Parameter

Roll

Options

What it changes

Off, Low, Med, Max

The degree of left-right steering.

Yaw

Off, Low, Med, Max

The degree of front-rear steering.

Steered All

Steered Rear, Steered Side, Steered All

Which of the four surround channels are generated by steering.

PLIIx Music

The PLIIx Music preset is designed to use the Pro Logic IIx DSP

processing mode to decode music sources. It provides additional

Width, Dimension, and Panorama preset parameters to allow

you to adjust the soundfield.

PLIIx Music DSP preset parameters

Parameter

Steered All

Width

Options

What it changes

Steered Rear, Steered Side, Steered All

Which of the four surround channels are generated by steering.

The centre spread, where 0 is full centre and 7 is full left and right.

0 to 7

Dimension

-3 to +3

The spatial soundfield, where -3 puts the balance to the rear of the room

and +3 puts it to the front.

Panorama

No, Yes

Extends the front stereo image to include the surround speakers,

providing a wrap-around effect new to Pro Logic.

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3 8

D S P p r e s e t s

Stereo and Direct

stability compared with the original Pro Logic decoding. Meridian’s

implementation of Pro Logic IIx uses proprietary code based on 48-

bit precision to give outstanding clarity.

The Stereo preset passes the left and right input signals directly to

the left and right main speakers. Any mono or front left and right

subwoofers continue to be used.

The PLIIx THX DSP preset uses the same PLIIx processing as PLIIx

Movie, but adds THX Cinema processing. THX is a set of standards

and technologies developed by Lucasfilm Ltd. with the aim of

making your experience of the film soundtrack as faithful as

possible to what the director intended.

With the Direct preset only the left and right main speakers are

used, bypassing any spatial processing and bass management.

There are no additional DSP preset parameters for Stereo and

Direct.

Re-equalistion is used to restore the correct tonal balance for

watching a film soundtrack in a small home environment.

PLIIx Movie and PLIIx THX

PLIIx Movie and PLIIx THX use the Dolby Pro Logic IIx DSP

processing mode, and are the recommended choice for Dolby

Surround encoded material. They also give excellent results with

two-channel sources not specifically encoded for Dolby Surround,

including two-channel Dolby Digital sources.

Timbre matching filters the information going to the surround

speakers so that they more closely match the tonal characteristics

of the sound coming from the front speakers. This ensures seamless

panning between the front and surround speakers.

Pro Logic IIx re-creates 7.1-channel movie surround from the two-

channel source, using improved decoding techniques that preserve

the directness of the soundfield, resulting in enhanced image

THX can also be used with the 5.1 Movie DSP presets; see THX,

page 41.

PLIIx Movie and PLIIx THX DSP preset parameters

Parameter

Surrounds

Pro Logic

Options

Rear, Side, All

Off, On

What it changes

Which of the four surround channels are generated by steering.

On selects an emulation of the original Pro Logic decoding.

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3 9

D S P p r e s e t s

TV Logic

TV Logic is a Logic preset based on Pro Logic IIx with the addition

of user-adjustable steering, designed to give higher intelligibility

and a more appropriate spatial presentation for studio-based TV

material.

TV Logic DSP preset parameters

Parameter

Roll

Options

What it changes

Off, Low, Med, Max

Rear, Side, All

The degree of left-right steering.

Yaw

The degree of front-rear steering.

Which of the surround channels are generated by steering.

Surrounds

Mono

If Party? is set to No, the combined or selected signal is played

only through the centre speaker, or the left and right speakers if

there is no centre, to centrally localise high-frequency hiss and

clicks.

In the Mono DSP preset you can choose to listen to:

• Only one of two input channels, such as when different

languages or material are carried on each channel.

• A combined version of the two input channels, such as if the

material was originally mono and has been conveyed on a two-

channel carrier.

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

damage small speakers at high volume levels.

Mono DSP preset parameters

Parameter

Input

Options

What it changes

Auto L+R, Input L, Input R, Input L+R

Off or On

The channel selected.

Academy

Select On to include an equalisation (recommended by Lucasfilm Ltd) to

correct for a high-frequency balance in some old mono films.

Party?

No or Yes

Select Yes to play the mono signal through all speakers, including

subwoofers.

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4 0

D S P p r e s e t s

There are five multichannel Movie presets:

DSP presets for multichannel material

Multichannel audio signals can come from either encoded data

streams (such as Dolby Digital) or as discrete channels from a DVD

player. If you are using Meridian SmartLink then all formats will

reach the G61 as discrete channels. With suitable loudspeakers the

G61 can upsample these to provide a more enjoyable surround

experience.

• Cinema, PLIIx Mov6, THX, THX Surround EX, and THX Ultra2

Cinema.

The multichannel Music presets all use the Music speaker layout

and the multichannel Movie presets all use the 5.1 Movie speaker

layout; see Speaker layouts, page 33.

The G61 Digital Surround Controller will automatically select the

right decoder algorithm and present the same set of preset choices

for all streams. Note: Some presets are only available if there are

four surround speakers in the system.

Cinema

The Cinema preset is recommended for listening to multichannel

movie soundtracks when no further processing is required.

Discrete

There are four multichannel Music presets:

The Discrete preset is similar to Cinema, except that it uses the

Music speaker layout and sets the LFE level to -10dB.

• Discrete, PLIIx Mus6, THX Music, and Ambisonics B format

(discrete inputs only).

Discrete and Cinema DSP preset parameters

Parameter

Options

What it changes

2+2+2*

Off, 5.1, Side, 7.1

Allows you to specify how DVD Audio channels 3+4 should be

interpreted: Off ignores them, 5.1 and 7.1 use them for centre and LFE,

Side uses them for the side speakers, 7.1 adds side speakers to 5.1.

Surround†

Surr. Rear, Surr. Side, Surr. All

Allows you to specify which speakers the surround channels should be

sent to in a system with four surrounds.

R Filter

S Filter

LFE

Off, 1kHz, 3kHz, 7kHz

-28dB to 0dB

The cutoff of high frequencies from the rear surrounds.

The cutoff of high frequencies from the side surround.

The relative level of the LFE bass channel.

*Discrete only.

†Cinema only.

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4 1

D S P p r e s e t s

THX

As with the PLIIx THX DSP preset, THX re-equalises the signals to

suit domestic listening conditions, and applies frequency-response

correction and decorrelation to the surround channels to make the

surround sound more realistic. It can be used whether or not your

other equipment is THX approved.

THX DSP preset parameters

Parameter

Options

What it changes

Surround

Surr. Rear, Surr. Side, Surr. All

Switches the surround signal between the side and rear speakers.

PLIIx Mov6, THX Surround EX, PLIIx Mus6, THX Ultra2

Cinema, and THX Music

THX Ultra2 Cinema and THX Music use a THX proprietary process

called advanced speaker array to provide a mix of ambient and

These presets are available if you have four surround speakers. They directional surround sounds using four surround speakers. Optimum

use Dolby Pro Logic IIx, Dolby Surround EX, and THX Ultra2 Cinema performance of THX Ultra2 Cinema and THX Music is produced

processing to generate multiple signals for larger home theatres.

when the two rear speakers are placed close together behind the

listening position. THX Ultra2 Cinema is recommended for movie

soundtracks that are not Dolby Surround EX encoded, and THX

Music is recommended for listening to multichannel music.

PLIIx Mov6 uses extended PLII technology from Dolby to generate

four surround signals from traditional multichannel source material

like Dolby Digital 5.1. It is intended for use with movie soundtracks.

PLIIx Mus6 also creates four surround signals; it is intended for

multichannel music playback from sources such as DVD-A or SACD

music discs.

PLIIx Mov6, THX Surround EX, PLIIx Mus6, THX Ultra2 Cinema, and THX Music preset parameters

Parameter

Options

What it changes

LFE

-28dB to 0dB

The relative level of the LFE bass channel.

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4 2

D S P p r e s e t s

Ambisonics

The Ambisonics preset allows you to decode multi-channel sources

which have been encoded in 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.

Using dynamic range control

If the input format is Dolby Digital, the 5.1 Movie DSP presets

provide an additional Compress parameter to allow you to take

advantage of the dynamic range information provided in the

Dolby Digital format to provide dynamic range control without the

distortion involved in analogue methods.

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4 3

D S P p r e s e t s

Defining your own presets

The G61 Digital Surround Controller allows you to modify any of

the built-in presets, and save them for future use.

Alternatively press V to choose the built-in preset you started

with. For example:

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 choice, so

you can use them alongside the built-in presets.

Pick Preset

Trifield

to overwrite

Store

óòô

öõú

• Press Store.

To save the preset settings

• Make sure the menus are unlocked; see To run the Configuration

Wizard, page 15.

The settings have been stored in the new or existing preset you

selected.

• Press DSP to select the preset you want to modify.

• Change the preset parameters to the values you want to store.

• Press More then Store, or Function + Store on the MSR+.

If you are defining a user preset you can now edit the name of the

preset if you wish.

A flashing cursor shows the letter you are editing:

The display shows the next available user-defined preset. For

example:

Write label

User 1

for preset

Pick Preset

User 1

ìî

ïñ

óòô

öõú Store

to overwrite

Store

óòô

öõú

• Press > or < to select the character position you want to edit.

• If you want to overwrite an existing user-defined preset press A

• Press A or V to change the character.

to select the preset you want to overwrite.

Each press steps through the sequence A to Z, a to z, 0 to 9, full

stop, and blank. You can also select a blank directly by pressing

Clear on the MSR+.

For example:

Pick Preset

Classical

to overwrite

Store

óòô

öõú

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4 4

D S P p r e s e t s

For example, you could change the name to:

Write label

for preset

Concert

ìî ïñ

óòô

öõú Store

• When you have entered the name you want to use press Store.

The display shows:

Stored

ìî

ïñ

óòô

öõú Assign

To make the new preset the default for the current source and

audio format:

• Press Assign.

To clear a user-defined preset

• Make sure the menus are unlocked; see To run the Configuration

Wizard, page 15.

• Press DSP to select the preset you want to clear.

• Press More then Clear, or Function + Clear on the MSR+.

The display shows Preset Clear.

If you clear a preset that was saved over a built-in preset, the

original settings are restored.

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4 5

Trouble shooting

Troubleshooting

We expect you to achieve superb results with your digital surround controller. If, however, you

encounter any problems, either when installing and configuring it, or during operation, please

check the following pages for suggested solutions.

If these suggestions fail to cure the problem, please contact your Meridian dealer for further

assistance.

Erratic or unexpected system behaviour

General operating problems

Standby light not lit

Redo the Auto Configure process as follows:

• Check that the AC power supply is connected correctly.

• Check that the ON OFF switch on the back panel is in the ON

position.

• Put the whole system into standby.

• Make sure you are operating the MSR+ from a position where all

the units can receive the infra-red.

• Press Clear on the MSR+.

If the light still does not illuminate, check any fuses in your power

supply and the fuse in the inlet of the G61. If these are all intact,

contact your dealer.

• Observe all units responding correctly.

In extreme cases, the memory of the G61 may have been

corrupted. If this is suspected perform a full reset; see Resetting the

product, page 16.

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4 6

Trouble shooting

Remote not working

Audio problems

Hum on analogue input

Check the following:

• Check the source equipment. Disconnect each source in turn.

• If the hum originates from a ground loop, an antenna or cable

supply may be the cause. In this case an antenna-lead isolator

should be fitted.

• The battery in the MSR+.

• Remove the Comms connections from the G61 and check

whether it responds now. If so, replace the connections and

perform an Auto Configure procedure; see To connect to other

Meridian G Series, 500 Series, or 800 Series equipment, page 14.

• See if the G61 has been set up as Not Controller in the

Configuration Menu; see Configuring other settings, page 22.

Note: This may be deliberate by your dealer.

• If the G61 seems to be the cause of hum consult your dealer.

There is radio interference

The G61 is a digital audio and computing device which has been

designed to very high standards of electromagnetic compatibility.

When playing a Dolby Digital DVD, the G61 selects a two-

channel preset

If this equipment does cause or suffer from interference to/from

radio or television reception then the following measures should

be tried:

DVDs include a two-channel Dolby Digital soundtrack, which will

use the default two-channel preset.

• Reorient the receiving aerial (or antenna) or route the antenna

cable of the receiver as far as possible from the G61 and its

cabling.

• Select a six-channel soundtrack, if it is available.

Unit is overheating

• Ensure that the receiver uses well-screened antenna cable.

• Relocate the receiver with respect to the G61.

• Connect the receiver and this product to different AC outlets.

• If the problem persists contact your dealer.

Check that there is adequate ventilation around the unit.

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4 7

Trouble shooting

Audible hiss at high volume settings

Sound not clear

The input dynamic range of most current recordings is at maximum

16 bit. The reason for this is that currently CD, DVD, 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 to be of the order of:

• If speech sounds muffled in a system with a centre speaker,

check that sound is coming from the centre as there may be a

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

playing a subwoofer signal.

• If speech sounds muffled in a system with no centre speaker, you

may have selected a layout that expects one. See Configuring

speakers, page 18.

• VCR, 12 bits.

• FM radio, 13 bits.

• Reel to reel tape, 13 bits.

• Cassette tape, 12 bits.

• LP, 11 bits.

Centre not working

There may be a connection problem.

Note: There may be a difference between the dynamic range of

the source channel when it is operating, and the noise you hear

in standby. For example, LP normally has lower noise when the

stylus is not in the groove; similarly tape will be quieter when it is

stopped. CD may also be quieter when it is stopped, producing so

called ‘digital silence’.

• In a digital or Meridian feed to the centre, you may have set it

up to be right instead of left, and therefore it may be playing a

subwoofer signal.

There is a hiss when starting DTS LaserDiscs or CDs

The DTS audio stream is indistinguishable from a PCM audio

stream; the G61 takes 30ms to identify the encoding, during which

a hiss is heard.

The G61 has a 24-bit capability on its internal analogue-to-digital

converter, which is used for analogue sources. When the volume is

turned up high you may hear its dither as a hiss when the sources

are stopped. This hiss is lower than the background noise of your

recordings and should be of no consequence.

• 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.

For more information about each of these options see the Meridian

Configuration Program Guide.

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4 8

Trouble shooting

The preset changes unexpectedly with a multichannel

source

If you are using a non-Meridian source on the MHR SmartLink

input, proprietary data may cause preset switching.

• Select Force this source to be six-channel for the source. See

the Meridian Configuration Program Guide.

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4 9

Trouble shooting

Maintenance

To change the mains fuse

Cleaning

To clean the case, display panel, and keypad

• Remove the mains connector, and pull out the drawer above the

power input to access the fuse.

• Disconnect the power cord before cleaning the unit.

Before replacing a blown fuse, it is best to ascertain the cause of

the failure.

The exterior surfaces of Meridian G Series products are made from

solid anodised aluminium, powder coated steel, thermoplastic

rubber, and glass.

The fuse drawer includes a spare fuse. This should be replaced by a

fuse of the same rating.

They are designed to be easily wiped clean with a dry, lint free

cloth. Greasy marks should be removed by light rubbing with a

slightly damp cloth and a trace of proprietary glass cleaner. Do not

use any other solvent or abrasive based cleaners.

Ensure that no liquid enters the casework and that the product is

completely dry before re-connection.

To clean the audio and video connections

The audio and video sockets on the back of the product are gold

plated and do not need to be cleaned if gold-plated phono plugs

are used. Otherwise, it is recommended that you unplug and

reconnect the plugs at least once a year. A proprietary contact

cleaner can be used to some advantage.

The electrical digital output should be treated in a similar way.

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5 0

Trouble shooting

Service and guarantee

Service

Guarantee

The Meridian G Series of hi-fi components has been carefully

designed to give years of untroubled service. There are no user-

serviceable parts inside the case, nor do the units require any form

of maintenance.

The product is guaranteed against defects in material and

workmanship for two years from the date of purchase.

The guarantee is void if the product has been subject to misuse,

accident, or negligence, or has been tampered with or modified

in any way without the written authorisation of Meridian Audio

Limited. Note: Connecting anything other than the correct network

lead to the Comms sockets may cause damage to the product

which will not be covered by this guarantee. Attempted servicing

by unauthorised people may also invalidate this guarantee. Labour

and carriage charges are not covered unless by local agreement.

In the unlikely event that your product fails to function correctly,

it should be returned, in its original packaging, to your Meridian

dealer.

In case of difficulty within the UK or USA please contact the

appropriate sales and service address shown on page iv.

In case of difficulty outside the UK or USA, contact the importing

agent for the territory. A list of Meridian agents outside the UK is

available from Meridian Audio.

Outside the UK, local warranty liability is restricted to equipment

purchased within the territory. Our agents outside the UK are only

under contractual obligation to service under-guarantee equipment

sold through them. They are entitled to make a non-refundable

charge for any service carried out on other equipment.

No responsibility can be accepted for the product whilst in transit

to the factory or an agent, and customers are therefore advised to

insure the unit. When seeking service under guarantee, proof of the This guarantee does not limit your statutory rights within the

date of purchase will be required. country of purchase.

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5 1

Index

I n d e x

compression 42

Compress (DSP parameter) 42

configuration, resetting 16

Configuration Wizard 15

configuring

Academy (DSP parameter) 39

accessories 5

active loudspeakers, connecting to 11

active subwoofer, connecting to 12

Ambisonics (DSP preset) 36, 42

analogue source, connecting 7

audio inputs 6

settings 22

sources 20

connections

audio inputs 6

audio outputs 9

cleaning 49

automatic setup 14

Axis (DSP parameter) 34

communications 13

Controller, setting 14

Balance (DSP parameter) 34

Bass (DSP parameter) 34

built-in presets, replacing 43

Depth (DSP parameter) 34

digital source, connecting 7

Dimension (DSP parameter) 37

Direct (DSP preset) 38

Discrete (DSP preset) 40

DSP parameters

Academy 39

calibration procedure 25

moving between tests 26

starting 26

tests 27

Axis 34

calibration tests 27

distance 27

Balance 34

Bass 34

fine-tuning 28

Centre 34, 35

Channels 36

levels 27

speaker size 29

Compress 42

Centre (DSP parameter) 34, 35

Channels (DSP parameter) 36

Cinema (DSP preset) 40

cleaning 49

Depth 34

Dimension 37

HS Output? 34

Input 39

COMMS, connecting 14

communications connections 13

LFE 40

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5 2

I n d e x

DSP parameters (continued)

LipSync 34

DSP presets (continued)

PLIIx Music 37

Panorama 37

Party? 39

PLIIx THX 38

standard parameters 34

Stereo 38

Phase 34

Pro Logic 38

Rear 34

Super 36

THX 41

Roll 37, 39

THX Music 41

Row 36

THX Surround EX 41

THX Ultra2 Cinema 41

Trifield 35

R Delay 34

R Filter 35, 36, 40

Sides 34

two-channel 35

Steered All 37

Surr. Rear 35

Surround 40, 41

Surrounds 39

S Delay 34

user-defining 43, 44

DVD-Audio player, connecting to 8

dynamic range control 42

S Filter 35, 36, 40

2+2+2 40

guarantee 50

Treble 34

Width 35, 36

Yaw 37, 39

HS Output? (DSP parameter) 34

DSP presets

Ambisonics 36, 42

Cinema 40

Input (DSP parameter) 39

clearing 44

Direct 38

Discrete 40

Mono 39

layouts

multichannel 40

Music 35

5.1 Movie 33

Music 35

MusicLogic 37

PLIIx Mov6 41

PLIIx Movie 38

PLIIx Mus6 41

LFE (DSP parameter) 40, 41

LipSync (DSP parameter) 34

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5 3

I n d e x

mains fuse, changing 49

Meridian DSP loudspeakers, connecting to 10

Mono (DSP preset) 39

MusicLogic (DSP preset) 37

Music (DSP preset) 35

safety warnings ii

settings 23

configuring 22

Sides (DSP parameter) 34

Sine/Sub/Sens controls 30

Sine/Sub/ Sens menu, sources 32

sinewave sweep test 30

Sound Pressure Level meter 25

sources

Panorama (DSP parameter) 37

Party? (DSP parameter) 39

Phase (DSP parameter) 34

PLIIx (DSP preset) 38

PLIIx Mov6 (DSP preset) 41

PLIIx Movie (DSP preset) 38

PLIIx Mus6 (DSP preset) 41

PLIIx Music (DSP preset) 37

PLIIx THX (DSP preset) 38

presets

options 21

sensitivity 32

setting up 32

sources, configuring 20

speakers

configuring 18

options 19

setting up 29

speaker layouts 33

multichannel 40

specifications 3

standard parameters 34

two-channel 35

Steered All (DSP parameter) 37, 38, 39

Stereo (DSP preset) 38

stereo power amplifier, connecting to 11

subwoofers

user-defining 43

Pro Logic (DSP parameter) 38

connecting to 12

crossover frequency 30

subwoofer crossover frequency 30

Super (DSP preset) 36

Surr. Rear (DSP parameter) 35, 40, 41

Surrounds (DSP parameters) 39

S Delay (DSP parameter) 34, 37

S Filter (DSP parameter) 35, 36, 40

Rear (DSP parameter) 34

Roll (DSP parameter) 37, 39

Row (DSP parameter) 36

R Delay (DSP parameter) 34, 37

R Filter (DSP parameter) 35, 36, 40

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5 4

I n d e x

THX (DSP preset) 40, 41

THX Music (DSP preset) 41

THX Surround EX (DSP preset) 41

THX Ultra2 Cinema (DSP preset) 41

Treble (DSP parameter) 34

Trifield (DSP preset) 35

troubleshooting 45

UHJ format 36

user-defined presets 43

clearing 44

editing name 43

Width (DSP parameter) 35, 36, 37

2+2+2 (DSP parameters) 40

Types 16, 17

Yaw (DSP parameter) 37, 39

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