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AMR AM-777 Owner's Manual

Premier class pre-main amplifier
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AM-777 Premier Class
Pre-Main Amplifier
Owner's Manual
Ver 1.7.5

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Summary of Contents for AMR AM-777

  • Page 1 AM-777 Premier Class Pre-Main Amplifier Owner’s Manual Ver 1.7.5...
  • Page 2 the receiver is connected. FCC Declaration of Conformity - United States only This device complies with Part 15 of the FCC rules. Operation is subject - Consult the dealer or an experienced radio/TV technician for help. to the following two conditions: (1) This device may not cause harmful Canadian Notice (Avis Canadien) interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

  • Page 3: Warnings

    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 personnel when: This component weighs over 15 kilograms. Do not place this compo- nent on an unstable cart, stand, tripod, bracket or table as the compo- The power cable or the power input socket has been damaged;...
  • Page 4 AMR estimates that the AM-777 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-777 to settle only after it has been used for this approximate length of time.

  • Page 5: Table Of Contents

    Contents WARNINGS Section 1 - Unpacking and Setup 1.1 Unpacking 1.2 Setup Section 2 - Component Overview 2.1 Front Panel 2.2 Rear Panel 2.3 Remote Control Section 3 - Operation 3.1 Power On/Off 3.2 Volume Adjustment 3.3 Rear Inputs 3.4 USB Input 3.5 Mode switch 3.6 Pre-Main/Power switch 3.7 HiFi/Pro switch...
  • Page 6 3.9 Speaker Impedance 3.10 Mains Voltage switch 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 for Bypass Mode 4.5 OptiProtect® Speaker Overload Protection Appendix A - Troubleshooting...

  • Page 7: Section 1 - Unpacking And Setup

    AM-777 Premier Class Dual-Mono Pre-Main Amplifier. contents are present RCD-777 Remote Commander. iii. Mains power cable. AM-777 Owner’s Manual. AMR Warranty Card. AMR System Test Disk. Please ensure that all items are present. Should an item be missing, please contact your AMR distributor/dealer.

  • Page 8: Setup

    1.2 Setup Pre-Main Stereo Amplifier Connection (8 Ohm Speakers) The following diagram illustrates the standard connection of the AM-777 in pre-main stereo amplifier mode. This is Default Pre-Main mode: the AM-777 as the default factory setting and is suitable for the majority of audio systems.

  • Page 9: Section 2 - Component Overview

    2.1 AM-777 Front Panel The plastic protec- tive film covering the display may be removed F1. STANDBY: to place the AM-777 in active or standby mode. F2. SOURCE: to select between the different inputs. F3. VOLUME: to adjust the volume level.

  • Page 10: Rear Panel

    2.2 AM-777 Rear Panel Warning: en- sure that the correct mains voltage and speaker impedance are selected!
  • Page 11 R13. Infra-Red Link: for connection of a wireline remote control. In the majority of audio systems, the AM-777 is most likely to be operated as a Pre-Main Amplifier. Please inspect the rear panel of the AM-777 to verify that the default settings (in bold) are as follows:...

  • Page 12: Remote Control

    2.3 RCD-777 Remote Control RC1. MENU: to enter Advanced Features mode*. RC2. STANDBY: to place the AM-777 in active or 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-777.

  • Page 13: Section 3 - Operation

    Section 3 - Operation 3.1 Power On/Off Press the ‘POWER’ rocker switch (R4) at the rear of the AM-777 to switch on mains power . To switch the mains Once powered OFF: always wait 30 power OFF, press again and release. Always wait at least 30 seconds before switching ON again. This is to seconds before enable the AM-777 circuits to shutdown properly.

  • Page 14: Mode Switch

    At the rear of the AM-777, the “Pre-Main/Power” switch (R11) enables the AM-777 to alternate between Pre- Main or Power amplification modes. 3.7 HiFi/Pro switch At the rear of the AM-777, the “HiFi/Pro” switch (R3) allows for a source with a transformer balanced output to be connected to the AM-777. 3.8 Preamplifier Output connector At the rear of the AM-777, the preamplifier output (R9) allows the AM-777 to drive other amplifiers (including AM- 777 switched to power amplifier mode) or subwoofers.

  • Page 15: Mains Voltage Switch

    3.10 Mains Voltage switch At the rear of the AM-777, the 115V/230V switch (R5) allows the AM-777 to be configured to correctly match the local mains voltage. Warning: setting this switch incorrectly may damage your AM-777!
  • Page 16 This page has been intentionally left blank...

  • Page 17: Section 4 - Advanced Features

    4.1 Labelling of Inputs and Setting Level Offset With the AM-777, in one process, it is possible to label each of the inputs with 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-777.
  • Page 18 List of available inputs: 15. PC Audio 1. Input X ( default ) All types of sources accomodated 16. Phono Stage 2. Aux I 17. Plasma TV 3. Aux II 18. Pre-Amplifier 4. Aux III 19. SACD Player 5. CD Processor 20.

  • Page 19: Labelling Input

    4.2 Labelling Input X • Press the Menu key on the RCD-777 • Use the Volume+/Volume- to scroll through the labels (see previous page for the full list of available labels) • Press the OK key on the remote to store the new name You will then move automatically onto ‘Setting Level Offset’...

  • Page 20: Setting Fixed Input Level For Bypass Mode

    4.4 Setting Fixed Input Level for Bypass Mode When using the AM-777 as part of a home theatre 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).
  • Page 21 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-777.

  • Page 22: Optiprotect® Speaker Overload Protection

    Normally, switching the AM-777 off, waiting 30 seconds and switching it back on will reset the protection circuit if the cause was for example, excessive signal levels. In the extremely rare event that an internal malfunction of the AM-777 is the cause for the protection circuit to engage, the protection will re-engage on switch-on, indicating the need for the AM-777 to be serviced at an AMR service centre.

  • Page 23: Appendix A - Troubleshooting

    • check and change IEC/mains plug fuse No sound • incorrect audio cable connections • connect the sources to the AM-777 correctly • incorrect amplifier operation • make sure that the input selector on the AM- 777 is set to the desired source Strange “blast”...

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