Univex Dual Mono Pre-Main Amplifier AM-77 User Manual

AM-77 Reference ClassDual-Mono Pre-Main AmplifierOwner’s Manual

10Section 4 - System Configurations 334a. OptiOperation® Different System Configurations 334b. Switching and Connection Diagrams for Different Modes 4

11Figure 1.1 - Front Panel of the AM-77DUAL MONO AMPLIFIER AM 77--Section 1 - Unpacking and SetupFigure 1.2 - Rear Panel of the AM-77PowerOnOffSyncBal

12Thank you for purchasing this AMR reference class component.We hope you derive as much pleasure from using this component as we have enjoyed making

131b. SetupPre-Main Stereo Amplifier ConnectionThe following diagrams illustrate the standard connection of the AM-77 in pre-main stereo amplifier mod

14Figure 1.3 - System connection using banana plug/spade connector equipped speaker cablesFigure 1.4 - System connection using Speakon connector equip

15Figure 2.1 - AM-77 Front FasciaF5F4F3F2F1DUAL MONO AMPLIFIER AM 77--Section 2 - Component OverviewF1. STANDBY switch: to place the AM-77 in active o

16Figure 2.2 - AM-77 Rear PanelR1. SPADE/BANANA outputs: for connection of standard termination speaker cables.R2. SPEAKON outputs: for connection of

17R7. 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 connec

18Figure 2.3 - RC-77 Remote ControlREMOTE COMMANDERRC-77kHzINVOLAmplifierCD ProcessorRC4RC3RC1RC6RC2RC5RC7RC1. MENU button: to enter Advanced Features

192a. Start-Up1. Power On/OffPress the ‘POWER’ rocker switch (R12) at the rear of the AMP to switch on mains power to the AM-77.To switch the mains po

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202. StandbyAfter start-up, pressing the STANDBY button (F1) on either the front fascia or the RC-77 (RC2), the AM-77will switch to STANDBY mode.Stand

214. Volume AdjustmentFrom either the front fascia of the AM-77 (F3) or the RC-77 (RC4), select the desired volume.While adjusting volume levels, ther

227. Synch ConnectorsAt the rear of the AM-77 are Synchronisation ‘In’ and ‘Out’ connection points (R8). This is for the linking ofmultiple AM-77s for

2312. Menu (RC-77 only)The MENU button (RC1) will enter the Advanced Menu system of the AM-77. Please refer to Section 3 -Advanced Features for a deta

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25The following section provides instructions to access the AM-77’s advanced features.3a. Labeling of Inputs and Setting Level OffsetWith the AM-77, i

26List of available inputs:1. Input X (default)2. Aux I3. Aux II4. Aux III5. CD Processor6. D/A Processor7. DVD Player8. DVD Recorder9. HD Recorder10.

27The following steps outline the procedure to label all the inputs and set the respective level offset.The AM-77’s default labelling of its inputs st

283b. Setting Fixed Input LevelWhen using the AM-77 as part of a home theatre system with an external processor controlling the overallsystem volume,

29- Having entered the ‘Fixed Input’ menu, now select:Fixed Input 1.55V = +6dBuorFixed Input 0.775V = 0dBuWarning! By selecting Home Theater Direct mo

3FCC Declaration of Conformity - United States onlyThis device complies with Part 15 of the FCC rules. Operation is subject to the following two condi

303c. OptiMains® Protection for Excessive Under/Over-VoltagesThe AM-77 is fitted with the OptiMains® system to condition and adjust the incoming mains

313d. OptiProtect® Speaker Overload ProtectionWithin OptiProtect® the AM-77 has an in-built speaker protection circuit. Unlike common protection syste

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334a. OptiOperation® Different System ConfigurationsIn keeping with AMR’s philosophy that ‘no one sound fits all’ the AM-77 is also adaptable to suit

34In 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-

35Figure 4.1 - Mode I: Pre-Main Stereo• Standard system with AM-77 as the onlyamplifier.LPreAmp(L)1st AM-77PowerAmp(R)PowerAmp(L)Left SpeakerRight Spe

36• Need 2 or more AM-77s.• Drive low impedance speakers that only haveone set of terminal connections.• ~600W/2Ohm RMS and ~300W/1Ohm RMSwithout curr

37Figure 4.3 - Mode III: Pre-Main Bi-Amplifier• Need 2 or more AM-77s.• Drive speakers that have more than one setof terminal connections with improve

38Figure 4.4 - Mode IV: Power Stereo• Same as Mode I, except the Pre-Amplifiersec tion has been bypassed.• A separate pre-amplifier is needed to cont

39Figure 4.5 - Mode V: Power Monoblock• Same as Mode II, except the Pre-Amplifiersection has been bypassed.• A separate pre-amplifier is needed to co

4This products complies with the EMC Directive (89/336/EEC) and the Low Voltage Directive (73/23/EEC) issued by the Commissionof the European Communit

40• Same as Mode III, except the Pre-Amplifiersection has been bypassed.• A separate pre-amplifier is needed to controlthe volume.Figure 4.6 - Mode V

414b. Switching and Connection Diagrams for Different ModesThe following is a description of the switch settings and connections required to engage th

42Figure 4.8 - Mode II: Pre-Main Monoblock amplifiersHiFiProModeIntAmpPowerAmpLRMMAnalogOutputsAnalogOutputsR LUSB InputIR LinkPowerOnOff90V 135V190V2

43Note: 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

44Figure 4.8 - Mode III: Pre-Main Bi-amplifier (horizontal bi-amping)AnalogOutputsAnalogOutputsR LUSB InputIR LinkPowerOnOff90V 135V190V260V～AC INCLAS

45Note: 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

46Figure 4.9 - Mode IV: Power Stereo amplifierHiFiProModeIntAmpPowerAmpLRMSpeaker CableSpeaker CableInterconnect CablePowerOnOffSyncBalancedInputDesig

47i. 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 R

48Figure 4.9 - Mode V: Power Monoblock amplifierHiFiProModeIntAmpPowerAmpLRMMSpeaker CableInterconnect CablePowerOnOffSyncBalancedInputDesigned and En

49Note: 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-77

5The exclamation point within an equilateral triangle is intended to alert the user to the presence of importantoperating and maintenance (servicing)

50Figure 5.0 - Mode VI: Power Bi-amplifier modeHiFiProModeLRMMSpeaker CableInterconnect CablePowerOnOffSyncBalancedInputDesigned and Engineered in Gre

51Note: 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-77

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535a. Input for iPod/other portable music playersSection 5 - Additional ConnectivityOn the front right-side panel, there is a 3.5mm jack (F4). This is

545b. ‘HiFi/Pro’ Switches for Balanced XLR inputsFor the majority of sources, the HiFi/Pro switch (R3) is best left in the ‘HiFi’ position. However, i

555c. RS232 ‘Options’ ConnectorThe RS232 ‘Options’ connector port (R9) is for upgrading the functionality of the AM-77 in future. Contact yourlocal AM

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57The following section provides a brief explanation of the most salient technical features of the AM-77.Circuit ‘X’® is AMR’s unique circuit: with NO

58Appendix - TroubleshootingFigure A.1 Troubleshooting GuideSymptom Possible cause Solution With power ON • poor/no power plug connection • insert t

59Figure S.1 - Specifications TableInputs: 5 x RCA1 x XLR Bal. shared with 1 RCA1 x iPod® shared with 1 RCAVolume Control: -71dB – 0dB in 1dB steps +

6Care should be taken so that objects do not fall, and liquids are not spilled into the enclosure through anyopenings.This component should be service

60...continuedMonoblock optionAn unlimited number of AM-77s can synchronisedThermionic Electron Valves 5687/6900 (NOS): amplification stagePower Trans

61NotesAt AMR we feel that the IHF standard represents the best available rigidly mandated and standardised, musically relevant measurementsapplicable

7On placementWith a total of 2 thermionic electron valves, the AM-77 may become warm during operation. This is normal.Given this, it is imperative tha

8horizontal position only. Do not place heavy objects on the component.Keep the component away from equipment with strong magnets, such as microwave o

9ContentsWARNINGS 5Section 1 - Unpacking and Setup 111a. Unpacking 121b. SetupSection 2 - Component Overview 152a. Start-UpSection 3 - Advanced Featur