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Astin Trew AT2000 Operation Manual

High definition integrated amplifier
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  • Page 1 Website: www.astintrew.co.uk...
  • Page 2 AT2000 high definition integrated amplifier Astin Trew Rosebank House Shepherd's Green Nr. Henley on Thames Oxfordshire RG9 4QL UK Telephone: +44 (0)1491 629 629 Facsimile : +44 (0)1491 629 640 Email: sales@astintrew.co.uk Website: www.astintrew.co.uk...

  • Page 3: Table Of Contents

    Operating information for the Astin Trew AT2000 integrated amplifier SECTION PAGE Introduction Unpacking AC Mains supply Safe use General Set up Description of AT2000 amplifier and functions Operation and remote control. Valve and internal fuse replacement. Troubleshooting 10. Specifications 11. Spares, cables for multi-room connectivity.

  • Page 4: Introduction

    1. Introduction Congratulations on your purchase of the Astin Trew AT2000 stereo integrated amplifier, an amplifier with musical sound qualities, multi-room and A/V features. This amplifier has been designed and is manufactured to a very high design specification, making it a true audiophile product. It will give you many years of listening pleasure. The following notes explain all aspects of its functions and use, to help you get the very best from it.

  • Page 5: Unpacking

    · XLR and RCA (phono) inputs to pre-amplifier. · Direct input to power amplifier, for integration into multi-channel A/V systems. · InfraRed (IR) control cable input and output for remote control of source components. · RS232 data bus connectivity for remote control in 'smart home' installations, compatible with Creston, AMX and other controllers.

  • Page 6: General Set Up

    Do not attempt to change or alter any component or part of this amplifier except for those which are user replaceable (see sections 6 and 7). Unauthorised adaptations will void the warranty and may cause damage. 5. General Set up After unpacking, check the mains voltage switch on the rear face is set to the correct voltage for your country.
  • Page 7 Front fascia illustration Figure 1...
  • Page 8 Rear panel showing connections illustration Figure 2 50Hz 60Hz ~230V ~230V ~115V ~115V IN XLR 232 RS OUT XLR...
  • Page 9 6.1 Stereo amplification, connections. The AT2000 design has a high quality audiophile integrated amplifier at it heart. In single room operation, there is a choice of XLR (balanced) and RCA (phono) source input sockets. The circuitry running the balanced XLR inputs is driven from a Never Connected supply, offering the highest quality sound from your source equipment.
  • Page 10 6.2 Active sub-bass output, 2.1 operation. The AT2000 2.1 option allows you to use smaller stand or bookshelf speakers with an additional active bass unit, from a single RCA (phono) output socket. The stereo signals are combined and buffered, again powered from the Never Connected supply, offering the best low frequency audio source.
  • Page 11 IR control electronics to enable functionality in the second room. Astin Trew source components, along with most other manufactures products do work from a remote IR controller. Some source equipment, such as record decks, do not (normally) have this functionality.
  • Page 12 The audio circuitry running the balanced audio signals is driven from a Never Connected power supply, offering the highest quality sound from your source equipment. Note: Balanced pre-terminated XLR cables are available from Astin Trew. See our web site www.astintrew.co.uk or price list.
  • Page 13 Audio through 'data' cable to second or third room. This is a cost effective alternative to the highest audio quality option. An ideal solution if you require second or third room audio using smaller bookshelf or wall mounted speakers for high quality, but occasional or less critical listening. Good quality (CAT5 type, RJ45 terminated) data cable with very low or no skew characteristics, designed for professional A/V use is recommended, to maintain high audio quality signals.
  • Page 14 Multi-room connections. By connecting the AT2000 amplifier through a multi-room distribution system, either controlled by an IR link or RS232 data bus, the AT2000 can become part of a smart home integrated A/V system. 6.4 Pre-amplifier output, for bi-amping. Bi-amping of loudspeakers is known to offer increased fidelity, normally perceived as deeper and more articulate bass, better sound staging and generally a cleaner and more dynamic sound.
  • Page 15 The AT2000 can be operated remotely through a 9 pin RS 232 bus connection, compatible with Crestron/AMX controllers. Further technical data can be found in the technical datasheet AT2000 downloadable from the Astin Trew web site, www.astintrew.co.uk. 6.11 Headphone and ear bud sockets.

  • Page 16: Operation And Remote Control

    Input selection, along with all other control functions, except mains power on/off, can be made through the hand held remote control unit supplied with the AT2000. As well as controlling the AT2000, the RC2 hand controller supplied with the AT2000 will also control Astin Trew AT3000 and AT3500 CD players.
  • Page 17 AT2000 Remote controller, in AT2000 amplifier mode illustrationFigure 8 1. Amplifier mode, button in raised OPEN/ OPEN/ position CLOSE CLOSE INPUT 2. Input selection button SCAN A - B A - B 3. Power amplifier AMP INPUT PROG input mode MUTE 4.
  • Page 18 AT2000 Remote controller, in AT3000/3500 CD player mode illustration Figure 9 1. CD mode, button depressed OPEN/ OPEN/ CLOSE CLOSE INPUT 14. CD Draw open/close 9. Scan SCAN 10. Numeric track selection 1 - 0 A - B A - B 11.

  • Page 19: Valve And Internal Fuse Replacement

    (8) R/S. Remote switching of second room amplifier. Figure 9 shows functions to operate CD players. These are described in detail in the Operations Manuals supplied with the Astin Trew CD player. 8. Valve and internal fuse replacement. Replacing or substituting the valves, or replacing the internal fuses, in the unlikely event of failure, can be carried out by your dealer or distributor.

  • Page 20: Troubleshooting

    There are a number of manufacturers offering this valve. Spare Astin Trew valves can be purchased through your dealer or distributor. As a guide, using this amplifier four times a week for an average four hours a session, for 48 weeks a year, we would recommend you change the valves every 20 years.

  • Page 21: Specifications

    Check all power switches are on and power cable is secure in the back of the amplifier. Remove power cable from the amplifier and check the Mains fuse, located in the Mains input socket moulding. No output: Check there is a signal to the power amplifier. Re-check cable connections to the loudspeakers.

  • Page 22: Spares, Cables For Multi-Room Connectivity

    In the event of a failure, neither Air Audio Ltd. t/a Astin Trew or its dealer or distributor shall be liable for any injury, loss or damage caused to property or products other than the product under warrantee.

  • Page 23: Ce, Rohs And Weee

    All Astin Trew products comply with CE regulations. All Astin Trew products comply with the RoHS Directive (EU). All Astin Trew products should be disposed of after use in accordance with the WEEE Directive (EU). 14. Architectural / Engineering description for specifiers.

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