Meridian Audio Home Theater System G61 User Manual

M E R I D I A N  
G
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  
 
G61 Digital Surround Controller  
Installation Guide  
 
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.  
 
i i i  
C o n t e n t s  
Contents  
Provides information about the digital surround controller,  
and technical specifications.  
Gives details of the DSP presets and their parameters, and  
describes how to modify them.  
Describes how to install the digital surround controller and  
connect it to the other equipment in the system.  
Provides suggested solutions to problems while installing,  
configuring, or operating the product.  
Explains how to configure the digital surround controller  
using the front-panel controls.  
Describes how to fine-tune the digital surround controller  
to achieve the optimum performance from your sources and  
speaker layout.  
 
i v  
P r e f a c e  
Copyright and acknowledgements  
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  
Copyright © 2003-2005 Meridian Audio Ltd  
Boothroyd|Stuart Meridian, Meridian, and Meridian Digital Theatre  
are registered trademarks of Meridian Audio Ltd.  
This guide was produced by Human-Computer Interface Ltd,  
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  
of Dolby Laboratories, Inc. All rights reserved. Used under  
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  
 
2
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.  
 
3
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.  
 
 
4
I n t r o d u c t i o n  
 
5
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.  
 
 
6
Installing the  
digital surround  
controller  
Audio inputs  
/PTICAL 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 .  
 
 
7
Installing the  
digital surround  
controller  
To connect to a digital source (eg G07 24-bit CD Player)  
'ꢂꢃ ꢄꢅꢆBIT # $ 0LA ER  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
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#/--3  
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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 75screened coax phono  
lead.  
To connect to an analogue source (eg TV tuner)  
46 TUNER  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
!.!,/'5% ).054  
!ꢁ 4  
/54054  
0(/./ ,%!$3  
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.  
 
8
Installing the  
digital surround  
controller  
To connect to a DVD-Audio player with digital multichannel outputs (eg G98DH DVD Audio Transport)  
'ꢇꢈ$( $6$ !UDIO 4RANSPORT  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
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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 75screened 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)  
3!# $ꢉ$6$ꢆ! PLA ER  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
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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.  
 
9
Installing the  
digital surround  
controller  
Audio outputs  
!NALOGUE 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.  
 
 
1 0  
Installing the  
digital surround  
controller  
To connect the G61 to Meridian DSP loudspeakers  
$30ꢊꢂꢂꢂ#  
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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.  
 
1 1  
Installing the  
digital surround  
controller  
To connect the G61 to active unbalanced loudspeakers (eg Meridian M33s)  
M33  
M33  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
!.!,/'5% /54054  
PHONO LEAD  
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)  
'ꢀꢁ 'ꢊꢀꢉ'ꢊꢃ 4WOꢆ# HANNEL 0OWER !MPLIFIER  
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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.  
 
1 2  
Installing the  
digital surround  
controller  
To connect an active subwoofer (eg Meridian M1500 or M2500)  
3UBWOOFER  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
35"  
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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.  
 
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.  
 
 
1 4  
Installing the  
digital surround  
controller  
To connect to other Meridian G Series, 500 Series, or 800 Series equipment  
'ꢀꢁ $IGITAL 3URROUND # ONTROLLER  
' 3ERIESꢍ ꢊꢂꢂ 3ERIESꢍ OR ꢈꢂꢂ 3ERIES UNIT  
#/--3  
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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.  
 
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  
More  
Version  
Unlock  
• Press Unlock to unlock it, then press More.  
 
   
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  
 
 
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  
0
1
2
3
4
5
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  
Centre  
LFE  
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.  
 
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.  
 
 
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.  
 
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.  
 
 
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  
High, Low  
High, Low  
Trigger outputs for the source.  
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.  
 
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.  
 
 
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  
1-8  
Advanced setting (normally 1).  
 
2 4  
Configuring the  
digital surround  
controller  
 
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.  
 
 
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  
Next  
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.  
 
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.  
 
 
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  
 
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  
0
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.  
 
 
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.  
CD  
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  
65  
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  
65  
-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.  
 
 
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.  
CD  
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.  
CD  
>> 88.5Hz  
öõú Sound Exit  
Chan óòô  
Slow sweep up.  
Paused.  
CD  
> 81.5Hz  
öõú Sound Exit  
Chan óòô  
CD  
CD  
Pause 80.0Hz  
öõú Sound Exit  
Chan óòô  
Slow sweep down.  
Fast sweep down.  
< 78.5Hz  
öõú Sound Exit  
Chan óòô  
CD  
<< 70.5Hz  
öõú Sound Exit  
Chan óòô  
 
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  
TV  
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:  
TV  
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.  
 
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:  
 
 
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  
+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>  
Y
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  
-30dB to +10dB  
0ms to 30ms  
+0.0dB  
+0.0ms  
+0dB  
+0dB  
Varies  
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  
0ms to 30ms  
*These parameters apply to all DSP presets.  
†Axis is only available with Meridian DSP loudspeakers.  
 
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  
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.  
 
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  
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.  
 
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.  
 
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.  
 
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  
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.  
 
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  
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.  
 
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.  
 
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.  
 
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  
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  
 
 
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.  
 
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.  
 
 
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.  
 
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.  
 
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.  
 
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.  
 
 
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.  
 
 
5 1  
Index  
I n d e x  
compression 42  
A
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  
audio outputs 9  
cleaning 49  
automatic setup 14  
Axis (DSP parameter) 34  
communications 13  
Controller, setting 14  
B
Balance (DSP parameter) 34  
Bass (DSP parameter) 34  
built-in presets, replacing 43  
D
Depth (DSP parameter) 34  
digital source, connecting 7  
Dimension (DSP parameter) 37  
Direct (DSP preset) 38  
Discrete (DSP preset) 40  
DSP parameters  
Academy 39  
C
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  
 
 
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  
G
S Filter 35, 36, 40  
2+2+2 40  
guarantee 50  
Treble 34  
Width 35, 36  
Yaw 37, 39  
H
HS Output? (DSP parameter) 34  
DSP presets  
Ambisonics 36, 42  
Cinema 40  
I
Input (DSP parameter) 39  
clearing 44  
Direct 38  
Discrete 40  
L
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  
 
5 3  
I n d e x  
M
S
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  
P
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  
R
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  
 
5 4  
I n d e x  
T
U
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  
W
Width (DSP parameter) 35, 36, 37  
2+2+2 (DSP parameters) 40  
Types 16, 17  
Y
Yaw (DSP parameter) 37, 39  
 

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