Size : 5.04 MB - Abbingdon Music Research
Contents
1. 47 48 49 50 Nbbingson Musa Peescarch This page has been intentionally left blank Section 1 Setup Please that check all contents are present Nbbingsion Pasic Peescarch Thank you for purchasing this AMR Reference Class component We hope you derive as much pleasure from using this component as we have enjoyed making it for you 1 1 Unpacking This section refers to the unpacking of the AM 77 and its subsequent setup Upon unpacking please find 1 IV V Vi VII vill AM 77 Reference Class Dual Mono Pre Main Amplifier RC 77 Remote Commander Mains power cable Synchronisation 3 5mm jack cable for linking up multiple AM 77s AM 77 Owner s Manual AMR Warranty Card AMR Test Disk Aluminium professional flightcase Please ensure that all items are present Should an item be missing please contact your AMR distributor dealer Ain een l e lresecrah 1 2 Setup Pre Main Stereo Amplifier Connection The following diagrams illustrate the standard connection of the AM 77 in pre main stereo amplifier mode This 1s Default pre main the default factory setting and is suitable for the majority of audio systems Figure 1 1 depicts the use of standard mode the AM 77as banana spade speaker connectors while Figure 1 2 illustrates the use of Speakon connectors an integrated amplifier Figure 1 1 System connection using banana plug spade connector equipped speaker cables Speaker R Speaker2. 0 870 420 5505 Fax 44 0 700 596 1065 www amr audio co uk
3. 3 2 Volume Adjustment 3 3 Rear Inputs 3 4 Speakon Outputs 3 5 Synch Connectors 3 6 Mode Switch 3 7 Int Power Switch Axbbingeon l e Peescarch 13 16 17 17 17 18 18 18 18 A Nbbingdon l e Peescarch 3 8 Hifi Pro Switch 3 9 RS232 Option Connector 3 10 Menu RC 77 only 3 11 OK RC 77 only 3 12 Mute RC 77 only 3 13 Brightness RC 77 only Section 4 Advanced Features 4 1 Labelling of Inputs and Setting Level Offset 4 2 Labelling Input X 4 3 Setting Level Offset 4 4 Setting Fixed Input Level 4 5 OptiProtect Speaker Overload Protection 4 6 OptiMains Protection for Excessive Under Over Voltages Section 5 System Configurations 5 1 OptiOperation Different System Configurations 5 2 Connection of more than one AM 77 Mode I Pre Main Stereo Mode Il Pre Main Monoblock Mode III Pre Main Bi Amplifier Mode IV Power Stereo 18 19 19 19 19 21 23 23 25 26 27 29 30 32 Mode V Power Monoblock Mode VI Power Bi Amplifer 5 3 Switching and Connection Diagrams for Different Modes Mode I Pre Main Stereo Mode Il Pre Main Monoblock Mode III Pre Main Bi Amplifier Mode IV Power Stereo amplifier Mode V Power Monoblock Amplifier Mode VI Power Bi Amplifer Section 6 Additional Connectivity 6 1 Input for iPod other portable music players 6 2 HiFi Pro Switches for Balanced XLR inputs 6 3 RS232 Options Connector Appendix A Troubleshooting Axbbingeon l e Peescarch
4. L Warning ensure no speaker connector 19 in contact with the chassis to cause a M short circuit E Speaker Cabla Speaker Cable Interconnect Cable _ Interconnect Cable CD 77 10 Arbbingcon l Le Peescarch Figure 1 2 System connection using Speakon connector equipped speaker cables Speaker R Speaker L AMR recommends the sonically superior Speakon connectors Speaker Cable Speaker Cable mi 14 H len Pr ES Doa Interconnect Cable CD 77 L Connect the respective spade banana Speakon connectors of the speaker cables to the AM 77 i Connect the source s via the respective left and right XLR or RCA connectors to Inputs 1 5 in Connect the IEC of the mains power cable to the AM 77 and the socket to a mains source 11 Nbbingson Musa Peescarch This page has been intentionally left blank 12 Section 2 Component Overview Antbingalon Musa Peescarch 2 1 AM 77 Front Panel The plastic protec tive film covering the display may be removed F1 STANDBY to place the AM 77 in active or standby mode F2 SOURCE to select between the 5 different inputs F3 VOLUME to adjust the volume level F4 iPod 3 5mm input connector for the connection of an iPod or similar portable music device F5 iPod USB charging connector for re charging an iPod or similar portable music device 13 Nbbingson l e lresecra
5. 7 may become warm during normal operation Given this it is imperative that the AM 77 when installed its location or position DOES NOT interfere with its proper ventilation For example it should not be situated on a bed sofa rug or similar surface that may block the top or bottom ventilation openings or placed in a built in installation such as a bookcase or cabinet that may im pede the flow of air through its top and bottom ventilation openings Do not place the component in a location near heat sources or in a place subject to direct sunlight excessive dust or mechanical shock Do not place the component in an inclined position It is designed to be operated in a horizontal position only Do not place heavy objects on the component Keep the component away from equipment with strong magnets such as microwave ovens or large loudspeakers To prevent fire or shock hazard do not place vessels filled with liquids such as vases on the component Running In AMR estimates that the AM 77 may take between 300 500 operating hours for all of the internal components to be fully broken in Please anticipate the sonic performance of the AM 77 to settle only after it has been used for this approximate length of time Contents WARNINGS Section 1 Setup 1 1 Unpacking 1 2 Setup Section 2 Component Overview 2 1 AM 77 Front Panel 2 2 AM 77 Rear Panel 2 3 RC 77 Remote Control Section 3 Operation 3 1 Power On Off
6. AR Antbbingalon Muzio Peesecarch AM 77 Reference Class Dual Mono Pre Main Amplifier Owner s Manual Nbbingson Masio Peescarch FCC Declaration of Conformity United States only This device complies with Part 15 of the FCC rules Operation is sub ject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation FCC WARNING Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to op erate the equipment NOTE 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 interfer ence 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 Reorient or re
7. ER AM 77 On the front right side panel there is a 3 5mm jack F4 This is for the connection of an iPod or any other portable music device for music playback through this medium To select this source change selection to Input 4 disconnect any RCA connection to Input 4 at the rear panel The USB connection F5 is purely for supplying power to the iPod other portable music device It serves no other function 47 Ain een l e lresecrah 6 2 HiFi Pro Switches for Balanced XLR inputs Pro switch is for the few pre amplifiers that have floating trans former balanced outputs For the majority of sources the HiFi Pro switch R3 is best left in the HiFi position However if the source has a pro audio style transformer balanced output the HiFi Pro switch needs to be set to Pro A transformer balanced output uses a floating secondary from an audio transformer unlike electronic balanced outputs of any description the signal is NOT referenced to ground Pin 1 For such rather rare equipment the Pro switch is engaged to short scircuit Pins 1 amp 3 thus establishing the ground connection 48 Adiringelon l Le Peescarch 6 3 RS232 Options Connector For future up grades The RS232 Options connector port R9 is for upgrading the functionality of the AM 77 in future Contact your local AMR distributor dealer for more details 49 A Nbbingdon Pasic Peescarch Sympt
8. NT POWER AMP switch R4 to the right to select INT AMP v Repeat this process for the other AM 77 vi Power both AM 77s back on via the POWER switch R12 39 Adiringelon Masio Peescarch Mode IV Power Stereo amplifier Speaker R Speaker L Speaker Cable Speaker Cable Power Int SERIAL NO Interconnect Cable Interconnect Cable 40 Antbingalon Pus lresecrah i Power OFF via the POWER R12 switch at the rear of the AM 77 ii Connect the desired separate pre amplifier to the AM 77 via the Balanced or RCA female connector of Input 1 R6 iii Using a small flat blade screwdriver move the MODE switch R5 to the centre to select L R iv Using a small flat blade screwdriver move the INT POWER AMP switch R4 to the left to select POWER AMP v Power the AM 77 back on via the POWER switch R12 41 Adiringelon Masio Peescarch Mode V Power Monoblock amplifier 4 d A E U o Speaker R Speaker L o o o GA eB g MO E Power Int Amp mp Speaker a oner Int Anp Amo AM 77 Master AM 77 Slave Interconnect Cable _ Interconnect Cable 42 Antbingalon Pus lresecrah Note This function requires at least 2 x AM 77 synchronised Pre Main amplifiers i Power OFF via the POWER R12 switch at the rear of both AM 77s ii Using a sma
9. bbingcion ml en Peescarch 5 3 Switching and Connection Diagrams for Different Modes The following is a description of the switch settings and connections required to engage the various modes Mode Pre Main Stereo amplifier default Speaker R Speaker L The default factory setting Speaker Cable Speaker Cable lance d input m Le ES ri da aw Mei i Ld 24 SE Ini T mom de D E su Lio 4 SERIAL NO AM 77 Interconnect Cable Interconnect Cable Gre CD 77 This is the factory default setting the connection for which has been described in detail in Section 1 Setup We have illustrated the default switch positions here for ease of reference to re configure from an alternative system setup back to the Pre Main Stereo amplifier mode 35 Adiringelon Masio Peescarch Mode Il Pre Main Monoblock amplifiers TN CH r MI i IE Speaker R Speaker L Mode ML O Qu Synchronisation Cable Speaker Cable Speaker Cable cee im B RA Laas Inputs dl 0 20 e L OOOO lL Ma e E Amp Amp Amp AM 77 Slave AM 77 Master Interconnect Cable Interconnect Cable CD 77 36 Antbingalon Pasic Peescarch Note This function requires at least 2 x AM 77 synchronised Pre Main amplifiers i Power OFF via the POWER R12 mains switch at the rear of both AM 77s ii Connect the cable from the Sync Out connector R of the master amplif
10. current clipping This is best suited to driving very low impedance speakers R mmm mm Right Speaker 2nd AM 77 30 Axbbingeon l e Peescarch Mode III Pre Main Bi Amplifier Need 2 or more AM 77s Drive speakers that have more than one set of terminal connections with improved per 1st AM 77 Left formance and dynamic range a mma D D AO GD Speaker Virtually all the power supply power is avail able to the low frequency channel with imp proved channel separation amm aja aj 42 A 2nd AM 77 amm umm GR AA p gt AA A Speaker 31 ANtbingalon Vd aic Peescarch Mode IV Power Stereo L Left Speaker 1st AM 77 Right Speaker 32 Same as Mode I except the Pre Amplifier sec tion has been bypassed A separate pre amplifier is needed to control the volume Axbbingeon l e Peescarch Mode V Power Monoblock Same as Mode II except the Pre Amplifier section has been bypassed A separate pre amplifier is needed to control 1st AM 77 the volume Left Speaker 2nd AM 77 Right Speaker 33 Axiringeon l e Peescarch Mode VI Power Bi Amplifier Same as Mode III except the Pre Amplifier section has been bypassed A separate pre amplifier is needed to control the volume 1st AM 77 s am 4D 4D DD AA AA am Speaker amm D D D AA 42 AA 2nd AM 77 Right Speaker 34 Arp
11. dy for use This should take just under 1 minute as the OptiMains circuit is verifying and the AM 77 is warming up 3 2 Volume Adjustment Adjust the volume up or down to attain a comfortable level for listening While adjusting volume levels there may be a very minor click from AM 77 and the speakers This 1s the normal operation of the relays within the OptiLevel direct path precision volume control 3 3 Rear Inputs At the rear of the AM 77 there are 5 inputs for the connection of source components Input 1 R6 is of most consequence because first while all 5 inputs can be connected via RCA only Input 1 also allows for the optional connection of XLR connectors Second in other configurations where the AM 77 is used in single channel mode all other inputs are defeated Signal input is allowed only through the LEFT channel white of Input 1 via XLR or RCA Please refer to Section 5 System Configurations for a detailed explanation 17 Axiringeon l e Peescarch 18 3 4 Speakon Outputs At the rear of the AM 77 are Speakon female connectors R2 to allow speaker cables terminated with Speakon male connectors to be connected to the AM 77 3 5 Synch Connectors At the rear of the AM 77 are Synchronisation In and Out connection points R8 This is for the linking of multiple AM 77s for alternative system configurations Please refer to Section 5 System Configurations for a detailed explanation 3 6 M
12. g Supreme adaptability The combination of synchronising multiple AM 77s together in practical terms is limited only by room size and cost This approach allows for systems at the core comprising of any number of AM 77s to be constructed to any level of complexity 21 Adiringelon Masio Peescarch In short the AM 77 s flexibility is limited only to that of the imagination For example one may employ 3xAM 77s synchronised along with a high quality digital crossover to drive a fully active 3 way speaker system to the highest possible level of sound reproduction or 3xAM 77s synchronised for a multi channel surround sound system or 2xAM 77s synchronised in monoblock or bi amplification mode to drive suitably equipped speakers 5 2 Connection of more than one AM 77 Before an alternative configuration 1s selected ALWAYS ensure the AM 77 is switched OFF 28 Nbbingsion Pasic Peescarch The following pages provide an outline of the theoretical wiring system behind each of the six different configura tions with a brief accompanying summary Mode I Pre Main Stereo Speaker e Standard system with AM 77 as the only amplifier Right Speaker 29 A Nbbingdon Pasic Peescarch Mode ll Pre Main Monoblock L Need 2 or more AM 77s Drive low impedance speakers that only have one set of terminal connections 1st AM 77 e ee se SS 600W 20hm RMS and 300W 10hm RMS without
13. h 2 2 AM 77 Rear Panel Warning ensure no Ge speaker connector is Lu in contact with the a l pbingdon l sis Pecsearch chassis Dual Mono Amplifier AM 77 Great Britain EI On R1 SPADE BANANA outputs for connection of standard termination speaker cables R2 SPEAKON outputs for connection of Speakon terminated speaker cables Please refer to Sec tions 3 5 par a more R3 HIFI PRO switch to allow for a source with transformer balanced output detailed explanation R4 INT POWER amp switch to alternate between Pre Main and Power Amplification setings R5 MODE switch to alternate between Stereo Monoblock Bi Amplification settings R6 INPUT 1 shared XLR and RCA input for signal input of source equipment 14 Axbbingeon l e Peescarch R7 INPUTS 2 5 RCA inputs for signal input of source equipment R8 SYNC connectors for connection of more than one AM 77 R9 RS232 option connector to facilitate future upgrades R10 Infra Red Link for connection of a wireline remote control R11 IEC power connector for the connection of a mains power cable to the AM 77 R12 POWER rocker switch to power on off mains electricity to the AM 77 In the majority of audio systems the AM 77 is most likely to be operated as a Pre Main Amplifier please inspect the rear panel of the AM 77 to verify
14. heatre system with an external processor controlling the overall system volume it is possible to program one of the five input sources to have a fixed level of input such as for a home theatre system of either 0 775V 0dbu or 1 55V 6dBu This allows the 2 Channel music system to be seamless ly integrated into a high performance multi channel home cinema system Go to Section 4 1 and follow the instructions to select the last label Simultaneously press volume F3 on the front panel of the AM 77 and OK RC7 on the RC 77 Having entered the Fixed Input menu now select Fixed Input 1 55V 6dBu or Fixed Input 0 775V OdBu Warning By selecting Home Theater Direct mode the volume of the amplifier will be switched to full Hence if it is used incorrectly it will damage the connecting speakers AMR assumes no responsibility for any speaker damage arising from use of the AM 77 Sometimes there are excessive mains fluctuations OptiMains will detect and protect Nbbingsion Pasic Peescarch 4 5 OptiProtect Speaker Overload Protection Within OptiProtect the AM 77 has an in built speaker protection circuit This is mainly a final safeguard against equipment failure and or extreme levels of over driving the amplifier and speakers When the display shows This indicates that the AM 77 has detected an output condition that could potentially damage the speakers connect ed to it Normally sw
15. ier to the Sync In connector R8 of the slave amplifier The amplifier with the cable connected to Sync In becomes slaved to the other and will automatically follow the master AM 77 iii Using a small flat blade screwdriver move the MODE switch R5 to the left to select M iv Using a small flat blade screwdriver move the INT POWER AMP switch R4 to the right to select INT AMP v Repeat this process for the other AM 77 vi Power both AM 77s back on via the POWER switch R12 37 Adiringelon Masio Peescarch Mode Ill Pre Main Bi amplifier horizontal bi amping Speaker R Speaker L Synchronisation Cable Sp Amr Am AM 77 Master AM 77 Slave Interconnect Cable Interconnect Cable CD Player 38 Antbingalon Pasic Peescarch Note This function requires at least 2 x AM 77 synchronised Pre Main amplifiers i Power OFF via the POWER R12 mains switch at the rear of both AM 77s ii Connect the cable from the Sync Out connector R8 of the master amplifier to the Sync In connector R of the slave amplifier The amplifier with the cable connected to Sync In becomes slaved to the other and will automatically follow the master AM 77 iii Using a small flat blade screwdriver move the MODE switch R5 to the right to select MM iv Using a small flat blade screwdriver move the I
16. immed but have returned to normal brightness then power up your AMR component as per the manual s instructions 26 Section 5 System Configurations Arvringsion Musie Recscarch 5 1 OptiOperation Different System Configurations Ttisassamadall In keeping with AMR s philosophy that no one sound fits all the AM 77 is adaptable to suit virtually any system prior sections have Configuration able to operate at one end as a Pre Main stereo amplifier and at the other as a single channel power been read amp amplifier In Pre Main amplifier mode the AM 77 will use both the pre and power amplification sections the AM understood with all 77 controls volume level and input selection controls In Power amplification mode the AM 77 wil require an requisite connec external separate pre amplifier to handle volume and input selection duties tions made The following section describes alternative configurations for the AM 77 beyond the factory default Pre Main Stereo amplifier setting With diverse system permutations in mind the AM 77 has built in six OptiOperation modes to seamlessly integrate into virtually any audio system configuration Mode I Pre Main Stereo amplifier mode default Mode II Pre Main Monoblock amplifier mode Su difierenmodss Mode III Pre Main Bi amplifier mode horizontal biamping Mode IV Power amplifier Stereo mode Mode V Power amplifier Monoblock mode Mode VI Power Bi amplifier mode horizontal biampin
17. itching the AM 77 off waiting 30 seconds and switching it back on will reset the protection circuit 1f the cause was for example excessive signal levels In the extremely rare event that an internal malfunction of the AM 77 1s the cause for the protection circuit to engage the protection will re engage on switch on indicating the need for the AM 77 to be serviced 25 Axiringeon Pasic Peescarch 4 6 OptiMains Protection for Excessive Under Over Voltages The AM 77 is fitted with the OptiMains system to condition and adjust the incoming mains supply for best operation under all normal mains conditions including situations that will cause audible problems without Opti Mains In almost every country throughout the world instances do arise where fluctuations in the main electricity exceeds that of a correctly operating mains supply and any electrical item product is no longer properly served In the case of extreme power surges brown outs or other exceptional unexpected conditions that exceed the safety margins the OptiMains system will automatically switch off the mains power to the internal parts of equipment to prevent any damage from occuring If the display reads A C M O L d d lt Ue O 4 de JS u X Ue Or pP e S dd dE SL e g R a n g e Power OFF your AMR component and wait at least 5 minutes If and when the mains electricity has been deemed to have returned to normal such as during a brown out and the lights have d
18. ive level offset 21 ANtbingalon Vd aic Peescarch All types of sources 22 accomodated List of available inputs d LO CO JO O A W N e FP p m Bb W N HO Input X defaut AUX I Aux II Aux III GD Processor D A Processor DVD Player DVD Recorder HD Recorder EEN BS eie LCD TV Media Center MP3 Player 15 LGs Lira 19 LO 203 Zi 225 SE Z0 23 SE E ie PC Audio Phono Stage Plasma TV Pre Amplifier SACD Player Tape Deck Television boner Turntable Uni Player Video Player Home Theatre Home Theatre Direct Antbingalon Pasic Peescarch 4 2 Labelling Input X e Press the Menu key on the RC 77 Use the Volume Volume to scroll through the labels see previous page for the full list of available labels e Press the OK key on the remote to store the new name You will then move automatically onto Setting Level Offset 4 3 Setting Level Offset Level Offset is flashing on the 1 line of the display Use the Volume Volume to increase decrease the offset the volume will also change in realtime The range of offset available is from 18dB to 12dB e Press the OK key on the remote to store the new offset Repeat this for all the inputs 23 A Nbbingdon Pasic Peescarch HTD mode always use an external pre amp as this mode will switch the AM 77 to 24 full volume 4 4 Setting Fixed Input Level When using the AM 77 as part of a home t
19. ll flat blade screwdriver move the MODE switch R5 to the left to select M iii Using a small flat blade screwdriver move the INT POWER AMP switch R4 to the left to select POWER AMP iv Repeat this process for the other AM 77 v Power ON both AM 77s via the respective POWER switch R12 43 Adiringelon Masio Peescarch Mode VI Power Bi amplifier Speaker R Speaker L LI a Power Int Amp Amp peaker Cable Speaker Cable AM 77 Master AM 77 Slave Interconnect Cable Interconnect Cable 44 Antbingalon Pus lresecrah Note This function requires at least 2 x AM 77 synchronised Pre Main amplifiers i Power OFF via the POWER R12 switch at the rear of both AM 77s ii Using a small flat blade screwdriver move the MODE switch R5 to the right to select MM iii Using a small flat blade screwdriver move the INT POWER AMP switch R4 to the left to select POWER AMP iv Repeat this process for the other AM 77 v Power ON both AM 77s via the respective POWER switch R12 45 Nbbingson Musa Peescarch This page has been intentionally left blank 46 Section 6 Additional Connectivity daten Music research 6 1 Input for iPod other portable music players is used ensure the A RCA of Input 4 is na disconnected m Input 4 Y lt ki DUAL MONO AMPLIFI
20. locate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which 9 the receiver is connected Consult the dealer or an experienced radio TV technician for help Canadian Notice Avis Canadien Class B Equipment This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe B respecte toutes les exigences du Reglement sur le mat riel brouilleur du Canada CE This products complies with the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC issued by the Commission of the European Community Compliance with these directives implies conformity to the following European Norms in parentheses are the equivalent international stand ards and regulations o EN55022 CISPR 22 Electromagnetic Interference o EN55024 IEC61000 4 2 3 4 5 6 8 11 Electromagnetic Immunity o EN61000 3 2 IEC61000 3 2 Power Line Harmonics o EN61000 3 3 IEC61000 3 3 Power Line Flicker o EN60950 IEC60950 Product Safety WARNINGS The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance serv icing instructions in the literature accompanying this component This component weighs over 35 kilograms Do not place this compo nent on an uns
21. ode Switch At the rear of the AM 77 the Mode switch R5 allows for the AM 77 to alternate between Stereo Monoblock B1 Amplifier modes Please refer to Section 5 System Configurations for a detailed explanation 3 7 Int Power Switch At the rear of the AM 77 the Int Power switch R4 enables the AM 77 to alternate between pre main or power amplification modes Please refer to Section 5 System Configurations for a detailed explanation 3 8 HiFi Pro Switch At the rear of the AM 77 the HiFi Pro switch R3 allows for a source with a transformer balanced output to be connected to the AM 77 Please refer to Section 6 Additional Connectivity for a detailed explanation Axbbingeon l e Peescarch 3 9 RS232 Option Connector At the rear of the AM 77 the RS232 connector R9 allows the AM 77 to be upgraded Please refer to Section 6 Additional Connectivity for a detailed explanation 3 10 Menu RC 77 only The MENU button RC1 will enter the Advanced Menu system of the AM 77 Please refer to Section 4 Advanced Features for a detailed explanation 3 11 OK RC 77 only The OK button on RC7 the RC 77 is for the confirmation of a desired selection within the Advanced Menu system of the AM 77 Please refer to Section 4 Advanced Features for a detailed explanation 3 12 Mute RC 77 only The MUTE button RC5 will disengage the volume of the AM 77 and re engage the volume if it 19 pressed again 3 13 Brightness RC 77 onl
22. om With power ON no power 1s registered No sound Strange blast sound Remote control does not work A humming sound can be heard Front switches jump enter Standby Other problems Appendix A Troubleshooting Possible cause e poor no power plug connection at mains power point e blown fuse at mains plug e incorrect audio cable connections e incorrect amplifier operation check speaker connectors are not in contact with the chassis terminal e remote control batteries have expired object obscuring remote sensor on the AM 77 no line of sight e loose cable connections e static electricity Solution e insert the power plug firmly into the AC e check and change IEC mains plug fuse connect the sources to the AM 77 correctly e make sure that the input selector on the AM 77 is set to the desired source e adjust fitting between speaker and chassis Ensure no contact between chassis and spade terminals no short circuiting ereplace 2 x AAA batteries e remove any objects directly in front of the AM 77 re attach the loose cables correctly e Touch the chassis prior to pressing a sensor to dis charge Then press the desired sensor e re trace the setup procedure or contact your nearest AMR distributor dealer Abbingdon Music Research is a subsidiary of the Abbingdon Global Group 50 22 Notting Hill Gate London W11 3JE United Kingdom Tel 44
23. ponent does not appear to operate normally or exhibits a marked change in performance E The component has been dropped or the enclosure has been damaged DO NOT ATTEMPT SERVICING OF THIS UNIT YOURSELF REFER SERVICING TO QUALIFIED AMR SERVICE PERSONNEL Upon completion of any servicing or repairs request the service point s assurance that only AMR Authorised Replacement Parts with the same characteristics as the original parts have been used and that the rou tine safety checks have been performed to guarantee that the com ponent is in a safe operating condition REPLACEMENT WITH UNAUTHORIZED PARTS MAY RESULT IN FIRE ELECTRIC SHOCK OR OTHER HAZARDS A Nbbingdon Pasic Peescarch Precautions This equipment has been tested and found to comply with the limits set out in the EMC Directive using a connection cable shorter than 3 metres On power sources The mains power cable should be routed so that it is not likely to be walked on or pinched especially near the plug or back panel recepta cle The component should not be disconnected from the AC power source as long as it is connected to the wall outlet even if the compo nent itself has been turned off If this component is not going to be used for a long time be sure to disconnect the component from the wall outlet To disconnect the AC power cable grasp the plug itself never pull the cable CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN On placement The AM 7
24. table cart stand tripod bracket or table as the compo nent may fall causing serious injury to a child or adult and serious damage to the unit An appliance and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the component and cart combination to overturn Any mounting of the device on a wall or ceiling should follow the Man ufacturer s instructions and should use a mounting accessory recom mended by the manufacturer Read and follow all the safety and operating instructions before con necting or using this component All warnings on the component and in its operating instructions should be adhered to Retain this Owner s Manual for future reference Do not use this unit near water for example near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool Abiron Music Peescarch Unplug the component from the wall outlet before cleaning Never use benzine thinner or other solvents for cleaning use only a soft damp cloth Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through any openings This component should be serviced only by qualified AMR service per sonnel when A The power cable or the power input socket has been damaged B Objects have fallen or liquid has been spilled into the component C The component has been exposed to rain or liquids of any kind D The com
25. that the default settings in bold to enable the AM 77 to operate in this mode are as follows HIFUPRO switch R3 is set to HiFi set to left position INT POWER switch R4 switch is set to Int set to right position MODE switch R5 is set to LR set to middle position Please refer to Sections 3 5 for a more detailed explanation 15 Nbbingson l e lresecrah 2 3 RC 77 Remote Control RC1 MENU to enter Advanced Features mode RC2 STANDBY to place the AM 77 in active standby mode RC3 SOURCE to select between the 5 different inputs RC4 VOLUME to adjust the volume level RC5 MUTE to Mute temporarily turn off sound the AM 77 RC6 BRIGHTNESS to adjust brightness levels RC7 OK to be used in Advanced Features mode Please refer to Section 4 Advanced Features section for more details 16 Section 3 Once powered OFF always wait 30 seconds before switching on again Beware prolonged listening at high volume levels is likely to damage your hearing O pe rat i O n Axbbingeon Muse Peescarch 3 1 Power On Off Press and release the POWER rocker switch R12 at the rear of the AM 77 to switch on the mains power To switch the mains power OFF press again and release Always WAIT at least 30 seconds before switching ON again This is to enable the OptiMains circuit to shutdown properly The display will light up to indicate the unit is switched on and rea
26. y The BRIGHTNESS button RC6 will adjust the display s brightness at the front panel of the AM 77 There are 4 different brightness settings including display off With its own isolated power supply with the display ON or OFF there is no sonic impact upon the AM 77 19 Nbbingson Musa Peescarch This page has been intentionally left blank 20 Section 4 Advanced Features xo mett 4 1 Labelling of Inputs and Setting Level Offset With the AM 77 in one process it is possible to label each of the 5 inputs for a corresponding source and to set the respective level offset This function is recommended only after ALL desired sources have been connected to the AM 77 Labeling Setting Level Input X Offset A list of available labels is shown overleaf in chronological order The main advantage of setting the level offset 1s that the volume level will change in real time so that the user may adjust the offset without the need for additional equipment By using this function and selecting the desired level offset one may match the volume level of all inputs so that when switching between sources the volume remains the same thereby avoiding undesirable and potentially equipment damaging noise levels For example Input 1 CD Player 2V output Offset 0dB JS Obs 2 LP 1V output Offset 6dB IUe o SACD Player 4V output Offset 6dB The following steps outline the procedure to label all the inputs and set the respect
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