Abbingdon-music-research AM-77 Reference Class Manual de usuario

AM-77 Reference ClassDual-Mono Pre-Main AmplifierOwner’s ManualVer 3.6.3

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

11Figure 1.2 System connection using Speakon connector equipped speaker cablesAMR recommendsthe sonicallysuperior Speakonconnectorsi. Connect the resp

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132.1 AM-77 Front PanelSection 2 - Component OverviewF1. STANDBY: to place the AM-77 in active or standby mode.F2. SOURCE: to select between the 5 dif

142.2 AM-77 Rear PanelR1. SPADE/BANANA outputs: for connection of standard termination speaker cables.R2. SPEAKON outputs: for connection of Speakon t

15R7. 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 connect

162.3 RC-77 Remote ControlRC1. MENU: to enter Advanced Features mode*.RC2. STANDBY: to place the AM-77 in active/standby mode.RC3. SOURCE: to select b

17Once powered OFF:always wait 30seconds beforeswitching on againSection 3 - Operation3.1 Power On/OffPress and release the ‘POWER’ rocker switch (R

183.4. Speakon OutputsAt the rear of the AM-77 are Speakon female connectors (R2) to allow speaker cables terminated with Speakonmale connectors to be

193.9 RS232 Option ConnectorAt the rear of the AM-77, the RS232 connector (R9) allows the AM-77 to be upgraded. Please refer to Section 6- Additional

2FCC Declaration of Conformity - United States onlyThis device complies with Part 15 of the FCC rules. Operation is sub-ject to the following two con

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214.1 Labelling of Inputs and Setting Level OffsetWith the AM-77, in one process, it is possible to label each of the 5 inputs for a corresponding sou

22List 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.

234.2 Labelling Input X• 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

244.4 Setting Fixed Input LevelWhen using the AM-77 as part of a home theatre system with an external processor controlling the overall systemvolume,

254.5 OptiProtect® Speaker Overload ProtectionWithin OptiProtect® the AM-77 has an in-built speaker protection circuit.This is mainly a final safeguar

264.6 OptiMains® Protection for Excessive Under/Over-VoltagesThe AM-77 is fitted with the OptiMains® system to condition and adjust the incoming main

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

28In 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

29Mode I. Pre-Main Stereo• Standard system with AM-77 as the onlyamplifier.LPreAmp(L)1st AM-77PowerAmp(R)PowerAmp(L)Left SpeakerRight SpeakerPreAmp(R)

3The exclamation point within an equilateral triangle is intended to alertthe user to the presence of important operating and maintenance (serv-icing)

30• 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

31Mode III: Pre-Main Bi-Amplifier• Need 2 or more AM-77s.• Drive speakers that have more than one setof terminal connections with improved per-formanc

32Mode IV. Power Stereo• Same as Mode I, except the Pre-Amplifier section has been bypassed.• A separate pre-amplifier is needed to controlthe volume

33Mode V. Power Monoblock• Same as Mode II, except the Pre-Amplifiersection has been bypassed.• A separate pre-amplifier is needed to controlthe volu

34• Same as Mode III, except the Pre-Amplifiersection has been bypassed.• A separate pre-amplifier is needed to controlthe volume.Mode VI. Power Bi-A

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

36Mode II: Pre-Main Monoblock amplifiers

37Note: 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 bot

38Mode III: Pre-Main Bi-amplifier (horizontal bi-amping)

39Note: 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 bot

4PrecautionsThis equipment has been tested and found to comply with the limitsset out in the EMC Directive using a connection cable shorter than 3

40Mode IV: Power Stereo amplifier

41i. 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

42Mode V: Power Monoblock amplifier

43Note: 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-7

44Mode VI: Power Bi-amplifier

45Note: 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-7

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476.1 Input for iPod/other portable music playersSection 6 - Additional ConnectivityOn the front right-side panel, there is a 3.5mm jack (F4). This is

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

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

5ContentsWARNINGS 3Section 1 - Setup1.1 Unpacking 91.2 Setup 10Section 2 - Component Overview2.1 AM-77 Front Panel 132.2 AM-77 Rear Panel 142.3 RC-77

50Appendix A - TroubleshootingSymptom Possible cause Solution With power ON • poor/no power plug connection • insert the power plug firmly into the

63.8 Hifi/Pro Switch 183.9 RS232 Option Connector 193.10 Menu (RC-77 only) 193.11 OK (RC-77 only) 193.12 Mute (RC-77 only) 193.13 Brightness (RC-77 on

7Mode V: Power Monoblock 33Mode VI: Power Bi-Amplifer 345.3 Switching and Connection Diagrams for Different Modes 35Mode I: Pre-Main Stereo 35Mode II:

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9Section 1 - SetupThank you for purchasing this AMR Reference Class component.We hope you derive as much pleasure from using this component as we have