Owners Manual
7 Channel Power Amplifier
5 Channel Power Amplifier
3 Channel Power Amplifier
2 Channel Power Amplifier

www.halcro.com

Contents
Introduction..3 Important Safety Information.5
Symbols.. 5 Electrical safety.. 5 Protection from fluids.. 6 Service warnings.. 6 Protection from overheating..7 Additional Important Safety Instructions for US.. 8 Interference warning - US FCC Regulations.. 9 Wiring to the Loudspeaker Terminals to Class 2 Wiring (US Wiring Regulations).. 9

Operation.. 25

Starting up... 25 Shutting down.. 25

Care and Maintenance. 27

Cleaning.. 27
Troubleshooting.. 29 Halcro Reliabilty Assurance Service (HRAS)..31
Installing HRAS Monitor software. 31 Launching HRAS Monitor.. 32 Setting up HRAS Monitor. 32 Viewing the events log. 41 Shutting down HRAS Monitor. 42 Uninstalling HRAS Monitor. 42
MC20 Features..11 MC30 Features.. 12 MC50 Features.. 13 MC70 Features.. 14 Installation.. 15
Unpacking..15 Storing packaging..15 Positioning..15

Communications. 43

Setting the IP address. 43 Ethernet communications. 43 Serial communications.. 43
Service and Warranty Information. 47
Overview... 47 Product warranty.. 47 Exclusions to the warranty.. 47 Transferability... 48 Warranty verification.. 48 Warranty registration.. 48 If service is required.. 48 Transportation of products.. 49 Freight damage claims.. 49 If you have moved.. 49 Thank you for choosing Halcro!.. 49
Controls and Connections. 17
Front panel...18 Rear panel..18 MC20/30/50/70 inputs..19 Connecting loudspeakers..19 Connecting an audio source.21 Connecting a processor.. 22 Connecting the trigger.. 23 Connecting to a PC.. 23 Connecting the mains supply cable. 23 Break-in period.. 23

Index...51

Introduction
Congratulations on purchasing the Halcro Logic MC20, MC30, MC50 or MC70 multichannel power amplifier. Born from a decade of high-performance two-channel Research and Development that produced the worlds finest super-high-end amplification systems, comes home theater at the highest level. Halcro Logic provides unprecedented levels of leading technology, resulting in reliability and Super-Definition performance. Halcro Logic is used throughout the world by home theater connoisseurs with a genuine love and passion for home entertainment at its best. Halcro has enjoyed creating perfect audio reproduction for the world's music connoisseurs. Please enjoy experience. the Halcro Logic audio Amplification for your home theater system must meet a stringent set of requirements. It must have a dynamic range to suit the most explosive action, the subtlest of tender moments and all that lies between. It must not distract with any intrusive distortion, and it must deliver all of this with pinpoint timing and accuracy. Each Halcro Logic multi-channel amplifier is a powerhouse that responds precisely to each of these demands, utilizing LYRUS technology to ensure the maximum detail and impact is drawn from all soundtracks. LYRUS amplification technology was developed by Bruce Candy, one of the world's leading commercial physicists and a passionate audiophile. LYRUS is the only genuine high-performance Class D amplification technology on the world market. It delivers very low levels of Total Harmonic Distortion (THD), the key feature of the Halcro range of monoblock and stereo amplifiers.
If you wish to contact Halcro to give us feedback on your purchase or for general enquiries, please feel free to: E-mail us at: admin@halcro.com or phone: +8238 0807.
Important Safety Information

Symbols

The following symbols are used on this equipment: The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated hazardous voltage that may be of sufficient magnitude to constitute a risk of electric shock to a person if exposed or contacted. The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the following pages. The CE symbol indicates compliance of this device with the relevant directives of the European community including the EMC (Electromagnetic Compatibility) and LVD (Low Voltage Directive) standards. Warning of electrical shock hazard. Do not open cover (or back). There are no user serviceable parts inside. Refer servicing to qualified service personnel.

Electrical safety

WARNING: This product must always be connected to a mains socket outlet with a protective earth connection.
Only use a suitable approved mains cord complying with European individual country requirements in the CE Low Voltage Directive Scheme.
DANGER: Do not open the cover or back, or remove any panels, or try to modify or repair the MC20/30/50/70. Opening the MC20/30/50/70 may expose you to dangerous voltages and will void the warranty.
WARNING: The Standby/On button does not disconnect the unit from the mains power. To disconnect the unit from the mains, switch off the unit at the mains socket outlet and withdraw the mains plug from the socket outlet.
The unit should be installed in a position where the mains plug is easily accessible. Disconnect the unit from the mains if it is to be left unused for a long period.
Cleaning may be performed with a slightly damp cloth that has been wrung until nearly dry. Refer to the section on Cleaning on page 27.
WARNING: No naked flame sources, such as lighted candles, should be placed on the unit. If naked flame sources tip over they could result in a fire.
WARNING: To reduce the risk of fire or electric shock, do not expose this equipment to rain or moisture. Do not allow liquids to enter the unit or contact electrical terminals.

Protection from fluids

The Halcro Logic MC20/30/50/70 units are designed for indoor use only and are not protected against liquids. They must not be exposed to dripping or splashing and no objects filled with liquids, such as vases, should be placed on them. If liquid is accidentally spilled on the device, immediately disconnect the unit from the mains. Allow sufficient time for complete evaporation before using the MC20/30/50/70 again. If the liquid is anything other than water, do not use the device before a qualified service technician has examined it.

Service warnings

All compartments are sealed at the factory. If the seals are broken, the warranty will be void and all service costs will be charged to the owner.
DANGER: Contains no user serviceable parts. Do not attempt to open any of the MC20/30/50/70 compartments as this may expose you to dangerous voltages and will void the warranty.

Requires F 10A L 250V fuse for continued protection against the risk of fire. Never bypass or use any other type of fuse. The fuse is located on the rear panel of the multichannel power amplifier (13).
Follow the precautions listed below. If these precautions are not followed, overheating or failure may result. Overheating also shortens the working life of all components. do not block the ventilation holes in the top or bottom of the unit with any object, including paper, cloths or curtains do not place the unit on a soft surface such as a rug, or carpet with a thick pile, into which it could sink avoid placing the unit in a built-in installation place such as a bookcase or a rack unless you can provide proper ventilation do not operate the unit inside a cabinet unless it has adequate ventilation (such as an open back panel) allow at least 4 in (10 cm) on all sides of the unit (except the bottom)
WARNING: Always replace the fuse with the same type and rating as specified: F10AL250V.
Always disconnect the unit from the mains before touching the loudspeaker terminals or replacing the fuse.
Protection from overheating
The MC20/30/50/70 generates a certain amount of heat and requires ventilation. Slots and ventilation holes are provided for ventilation purposes, and to ensure reliable operation of the product. To prevent fire hazards, these openings must never be blocked or covered. The MC20/30/50/70 may be stacked on top of a Halcro Logic SSP80/100 amplifier but overheating may result if ventilation is inadequate. Ensure there is at least 4 in (10 cm) above the uppermost unit for ventilation.
WARNING: Do not obstruct ventilation slots in the chassis.
Additional Important Safety Instructions for US
The following instructions should be followed by customers in the USA in addition to the safety instructions in the rest of this chapter: o Read these instructions. o Keep these instructions. o Heed all warnings. o Follow all instructions. o Do not use this apparatus near water. o Clean only with dry cloth or according to the cleaning instructions. o Do not block any ventilation openings. o Install in accordance manufacturers instructions. with the Additional instructions continued: o Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. o Only use attachments/accessories specified by the manufacturer. o Unplug this apparatus during lightning storms or when unused for long periods of time. o Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as if the power-supply cord or plug is damaged, liquid has been spilled, or objects have fallen into the apparatus, if the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

o Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. o Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades, with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
Interference warning - US FCC Regulations
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: o Increase the separation between the equipment and receiver. o Connect the equipment into an outlet on a circuit different from that to which the amplifier is connected. o Consult the dealer or an experienced radio/TV technician for help. Changes or modifications not expressly approved by Halcro could void the user's authority to operate the equipment.
Wiring to the Loudspeaker Terminals to Class 2 Wiring (US Wiring Regulations)
This equipment has been classified as having a Class 2 loudspeaker output requiring wiring to connect the output terminals to class 2 according to the National Electrical Code. Consult a qualified installer or electrical contractor for further information.

MC20 Features

Features of the Halcro Logic MC20 include: 2-channel rack mountable or free standing multi-channel power amplifier 400 watts per channel unbalanced and balanced voltage inputs mains voltage: 100-240 V AC remote trigger switch between On and Standby full control via RS232 or ETHERNET connection Command Functions: switch between On and Standby ability to inhibit individual amplifier modules amplifier module will indicate overtemperature condition amplifier module will indicate overcurrent condition Halcro Reliability Assurance Service (HRAS)

Controls and Connections

The numbers shown on the diagram below are used throughout the manual to refer to the individual controls and connections on the front and rear panel. Refer to this page for a quick reference to all controls and connections.

Front panel

1 Standby/On button
Switches the multi-channel power amplifier between Standby and ON.

Balanced voltage input

Connects to an audio source such as a CD player.

Power LED

LED indicating the unit is in Standby mode.

Selector switch

Selects balanced or unbalanced voltage input.
Amplifier status indicators
LEDs indicating the status of the amplifier modules.
10 Unbalanced voltage input

Loudspeaker connections

Positive and negative loudspeaker connections (maximum of seven in the MC70).

Rear panel

4 Communications card
RS232, trigger and Ethernet connections to computers or home automation systems or control center.
12 Master On/Off switch 13 Fuse 14 Mains inlet socket 15 Amplification modules
Connections to up to seven (in the MC70) amplification modules comprising audio input and loudspeaker connections

Ethernet connection

Connects to a PC.

Trigger connection

Connects to a control center such as the Halcro Logic SSP80/100 to allow it to control the multi-channel power amplifier.

RS232 connection

Interface for connection to a home automation system or computer network.

MC20/30/50/70 inputs

Connect the audio source to the required input, and make sure the selector switch is in the correct position: up for balanced voltage input; down for unbalanced voltage input. Balanced voltage input: High impedance: suitable for a standard preamplifier or CD player for example. XLR output. Input impedance: 10 kohms + 10 kohms. Unbalanced voltage input: High impedance: suitable for a standard preamplifier or CD player for example. RCA output. Input impedance: 10 kohms. Each amplification module is numbered and named (15) for your convenience. To ensure peak performance, and share the load equally between the power supplies, we recommend you connect the speakers as designated by name. For example, connect the Left Front speaker cable to 'L.Front' on your MC20/30/50/70. (Refer to the diagram on following page.) Each amplification module loudspeaker terminals (11): Positive Negative + (red) (black) has two

Connecting loudspeakers

When connected by trigger cable, the MC20/30/50/70 cannot be switched to Standby by selecting the Standby/On button.
If you require more contact your dealer. information, please

Break-in period

The multi-channel power amplifier electronic break-in period is completed at the factory. A further break-in period is not required.

Operation

Numbers in this chapter refer to the controls and connections diagram on page 17.
The multi-channel power amplifier is now ready to drive your loudspeakers.

Starting up

Once the external cables are connected to the units, ensure the Master On/Off switch (12) is in the Off position, and then operate the system as follows: o Plug the mains cable into a mains socket outlet. o Turn on the mains socket outlet switch. o Switch the Master On/Off switch on the rear panel, to ON (12). After a brief initialization sequence, as displayed on the front panel LEDs, the power LED (2) will glow red, which indicates the unit is in Standby mode. In this mode a small current is drawn from the mains supply, but the unit cannot drive the loudspeakers. o Press the Standby/On mode button (1) once to switch between Standby and On modes. In ON mode, the LEDs (3) on the front panel glow blue to show the unit is active. (When switching from Standby to On, some amplifier module LEDs may briefly flash red before operating a steady blue. This is normal operation.)
If the multi-channel power amplifier trigger (6) is connected to a control center such as the Halcro Logic SSP, it can be left in Standby mode since the control center will operate the amplifier when required.

Shutting down

It is safer to turn the mains power off when not using the multi channel power amplifier for extended periods. However the MC unit may be left in Standby mode for periods between active use. Select the Standby/On button to toggle between Standby and On. To turn the unit off, switch the master On/Off switch (12), and then switch off and/or disconnect from the mains at the socket outlet. The multi-channel power amplifier has a very short warm up period when turned on again.
If the unit is connected via the trigger input (6) to a control center (SSP), the unit cannot be switched to Standby mode using the Standby/On button

Care and Maintenance

The multi channel power amplifiers have been designed for indoor use only. Under no circumstances should the amplifier be allowed to get wet. The only maintenance required is to ensure the unit is kept clean. o Immerse the soft cloth in the bucket of water and then wring the cloth out thoroughly until the cloth is nearly dry. o Use the slightly damp cloth to clean the unit surfaces. Never clean any electrical fittings or terminals with the damp cloth. o After using the slightly damp cloth, wipe over the surfaces with a soft dry cloth. o Allow the amplifier to air for at least one hour before turning the power back on. If you are unsure about the cleaning of the amplifier and require more information, please ask your dealer or contact Halcro at: service@halcro.com

Cleaning

Halcro takes no responsibility for any damage caused through careless or improper cleaning techniques.
WARNING: Never use flammable products when cleaning the MC20/30/50/70 as this may damage the surface finish of the product.
Please read the following procedures very carefully: o Before cleaning, disconnect the unit from the mains supply. Use only extremely soft cloths. o Use a soft dry cloth to remove any dust. o Add 0.5 fl oz (15 ml) of very mild household dishwashing detergent to a one-gallon (four-liter) bucket of tepid water.

Troubleshooting

Symptom NO sound and NO lights Remedy Ensure the master switch is On and the mains cable is plugged into the multi-channel power amplifier. Ensure the mains cable is plugged into a working wall socket. (Try testing the wall socket with another appliance.) Check the fuse. NO sound and a RED Light NO sound and all lights are BLUE Press the Standby / ON button to select ON. Ensure the input selector switch is set to the correct input. Ensure loudspeaker cables are correctly connected (both ends). Ensure the input cables are correctly connected (both ends). Try a different audio source. Try a different loudspeaker. NO sound or sound missing from one or more loudspeakers, the power light is BLUE and one or more amp lights FLASH RED NO sound or sound missing from one or more loudspeakers, the power light is BLUE and one or more amp lights are RED NO sound or sound missing from one or more loudspeakers, the power light is BLUE, and one or more amp lights are OFF Amplifier module is too hot. Wait for it to cool and try again.

Setting up E-mail notification
HRAS Monitor can send E-mails to up to three recipients if problems occur with your system. To setup the E-mail addresses: o Click the E-mail Notification Setup tab on the HRAS Monitor window. The E-mail Notification Setup page is displayed: The top section of this page determines whether E-mail notification is enabled or disabled. o To enable E-mail notification, make sure Enable is checked, as shown:
To setup which events should trigger an E-mail (normally failure of an output channel only). o Click Select Events. o Select the checkbox for desired settings and click OK or simply click OK to accept the default.

Notification

The E-mail Server section of the E-mail page sets up your Internet connection details. o Enter the IP address of your Internet Service Provider (ISP) (contact your Internet Service Provider if you are not sure of the address). o Enter 25 at the Port of SMTP server field. o Enter the username you use for your E-mail program to log on to your ISP. o Enter your full E-mail address.
The bottom section of this page allows you to enter up to three E-mail addresses. If a problem occurs with your system, these E-mail recipients will receive notification of the problem. Typically the major recipient would be the Halcro service department, but you may wish to send an E-mail to the installer, your Halcro dealer, or even your own E-mail address. o Enter at least one E-mail address.
We recommend you telephone the recipient(s) to confirm they have received the test E-mail, which will confirm the E-mail setup is correct. Note: Some Internet service providers may block the 'alert' E-mails sent by HRAS.

Customizing settings

If you wish, you can customize the E-mail settings, as follows: o Click the Advanced button to view the Advanced E-mail Settings dialog. o At the top, check the box and insert your name and telephone details if you want them included in the E-mail. o In the bottom section, check the box and insert the installers details if you want them included in the E-mail. o Click OK to save the changes, or Cancel to lose them. The E-mail Notification page is displayed again. If you wish, you can send a test E-mail to the recipient(s) listed at the bottom of this screen. To do this: o Click Send Test E-mail.

Setting HRAS options

To check or change the HRAS setup options: o Select Options from the Tools menu. The Options dialog is displayed. o If a period other than the default is required, select it from the pull-down list. o Make sure Always enable HRAS for newly discovered devices is checked, to ensure any new devices are added automatically. o Make sure Enable logging of HRAS events is checked, to ensure events are logged to aid in troubleshooting.

To view the HRAS events: o Click Source to sort the list by application name. o Scroll through the list to the HRAS application events. To view further information on an event: o Double-click on the event. The Event Properties dialog is displayed.
Shutting down HRAS Monitor
To exit the HRAS Monitor program, right click the HRAS application icon in the Windows Taskbar, and then select Exit from the menu. Note that closing the HRAS Monitor window does not shut down the application. If the icon is present on the Toolbar, the HRAS Monitor is still running.
To remove the application: o Scroll through the list to find and select HRAS Monitor. o Click Remove. o Click Yes on the warning dialog to confirm you do wish to uninstall the program. o Close the window.
Uninstalling HRAS Monitor
If you need to uninstall HRAS Monitor for any reason, proceed as follows: o Shut down the HRAS Monitor if it is running (refer to previous section). o Click the Windows Start button. o Select Settings / Control Panel / Add or Remove Programs. A list of installed programs is displayed.
As with any other software, do not try to uninstall the program by just deleting it. It is important to remove it as described above, or your computers operating system could become unstable.

Communications

The Halcro MC series have can be controlled and monitored via a personal computer (PC). A serial and an Ethernet port are available for this purpose. Each port has two modes of operation: plain ASCII and pseudo-binary. In ASCII mode commands and messages are sent as plain text. In pseudo-binary mode commands and messages are encoded.

Ethernet communications

The multi-channel amplifiers can be connected to an Ethernet network. There are three modes of communication which operate on different ports: port 60001 is Pseudo-binary on TCP/IP port 60002 is ASCII on TCP/IP port 60003 is UDP/IP

Setting the IP address

The IP address can be manually setup or automatically assigned by a DHCP server on the network, depending on the DHCP state of the amplifier. If DCHP is set to never an IP address and netmask must be assigned via the serial port. If DHCP is set to auto and an IP address has been assigned manually; you must reset the IP address to 0.0.0.0 then the DHCP sever will assign a new address at next start up. If DHCP is set to always a new IP address will be obtained at start up. If an IP address is set by DHCP the easiest way to determine the number is to use the Halcro HRAS software. This will communicate with any Halcro equipment on the network via UDP and report the IP addresses found. For more information on HRAS software please see page 31.

Transferability

Transferability means that the warranty stays with the product from the date of original purchase through the full warranty period, regardless of who owns the product. The Halcro warranty is transferable, providing that the original sales receipt or proof of purchase is supplied to both subsequent owners and to Halcro when ownership changes.

If service is required

We suggest that you work with your authorized Halcro dealer when the need for technical service, training, or applications advice arises. If your Halcro product requires service or repair, your product should be shipped to Halcro or your authorized Halcro dealer to be returned to the factory for service. To qualify for free warranty service, the following conditions must be met: the unit must be returned to Halcro or its authorized repair center in the original packing materials This will ensure the safety of the equipment. If you have misplaced or damaged the original packaging, you can purchase new packaging through your dealer or directly from Halcro. the unit must be accompanied by a copy of the Halcro Product Warranty Registration card and the original sales receipt shipments to Halcro must include a Return Authorization number To obtain this authorization, please ask your dealer or email Halcro directly (see contact information below). Halcro cannot be responsible for any damage caused to your equipment during shipping due to improper packaging If the packaging material needs to be replaced on its arrival at the factory, the owner will be informed of the replacement cost.

Warranty verification

It is the owner's responsibility to show proof or purchase verifying that the unit to be serviced is within the warranty period. Proof of purchase options include: copy of sales receipt showing name of original owner, dealer, and purchase date copy of credit card voucher or cancelled check accompanied by owner's record of purchase date and serial number

Warranty registration

While not required for service, we request that you register your Halcro product as soon as you purchase it. Please use the Halcro Product Warranty Registration form that is provided or request a copy from your Halcro dealer.
Transportation of products
Halcro pays freight one-way to return product once warranty repair is completed. Halcro requests prepaid shipment to the factory or to a designated repair center or service agency. We are not equipped to accept freight collect shipments. Halcro is not liable for freight, courier, or other charges incurred in transporting a unit to and from a dealership, service center, or the factory unless written approval and instructions are issued in advance. Such documents must include the Halcro Return Authorization number, a detailed description of the situation, and signature of authorized Halcro representative.

If you have moved

In the event that you have changed locations since your original Halcro purchase, we will happily direct you to your nearest authorized Halcro dealer upon request.
Thank you for choosing Halcro!
We trust you will enjoy the performance of your Halcro equipment long past the warranty period. Thank you for choosing Halcro!

Freight damage claims

If a unit being returned to Halcro is damaged in shipment, Halcro will contact the carrier for inspection. The carrier will contact the shipper regarding the claim. Halcro is not liable for damage or delays caused in shipment to or from Halcro facilities.
7.1 output, 21 Audio input, 21 Balanced voltage input, 19 Break-in, 23 CE mark, 5 Communications, 43 Computer requirements, 31 Control center, 21 Customizing settings, 37 Device properties, 39 Electronics break-in, 23 E-mail, 31 address, 3 notification, 32, 35 EMC, 5 Ethernet, 43 Events viewer, 41 Fault finding, 29 FCC rules, 9 Feedback, 3 Fuse, 7 Halcro SSP, 21 HRAS, 31 customizing, 37 device registration, 33 E-mail notification, 35 events log, 41 installing, 31 launching, 32 manual registration, 35 monitor, 32 options, 38 setting up, 32 shut down, 42 starting, 32 uninstalling, 42 Impedance, 19 Interference, 9 Introduction, 3 IP address, 43 LED, 25 Lightning, 8 Lights, 29 Liquids, 6 Location of components, 18 LVD, 5 Master On/Off switch, 25 MC20, 11 MC30, 12 MC50, 13 MC70, 14 Naked flames, 6 On mode, 25 Operation, 25 Overheating, 7 Packaging, 15, 31 replacement, 31 Packing list, 15 Polarized plug, 8 RCA output, 19 Register devices, 33, 35 Return authorization, 48 Safety, 5 Service warnings, 28 Servicing, 8 Software, 31 SSP, 21 Standby mode, 25 Start up, 25 Symbols, 5
Test E-mail, 37 Troubleshooting, 29 Unbalanced voltage input, 19 Uninstall, 42 Unpacking, 15 US warnings, 8 Ventilation, 7 Voided warranty, 47 Warm up, 25 Warranty, 47 XLR output, 19
Copyright and acknowledgements
This product is manufactured by Extraordinary Technology (Hi-Fi) Pty Ltd trading as Halcro and Halcro Audio (USA) Inc Halcro Logic and Lyrus are trademarks of Extraordinary Technology (Hi-Fi) Pty Ltd, Australia. Microsoft and Windows are trademarks of Microsoft Corporation, USA.

Halcro Logic MC20/30/50/70 Owners Manual Revision 2.0, Halcro 2005

MC70 front & rear panels

MC70 Front Panel

Standby/On button Channel/Module LEDs Amplifier Status Indicators (L-R, modules 1,2,3,4,5,6,7)

MC70 Rear Panel

RISK OF ELECTRIC SHOCK DO NOT OP EN

CAUTION

Manufactured in Australia

7 Left Rear

6 Left Front

5 Left Surround

4 Center

3 Right Surround

2 Right Front

1 Right Rear

Communications Card RS232 Serial Connection Remote Trigger Input Ethernet Connection Balanced Voltage Input Selector Switch
Unbalanced Voltage Input Loudspeaker Connections Master On/Off Switch Fuse (F10AL 250V) Mains Inlet Socket Lyrus Amplification Modules (1-7)