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Manual QUAD ESL-989

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  • QUAD ESL-989 - page 1

    1 ESL-988 & ESL-989 Electrostatic Loudspeakers Instruction Manual CONTENTS IMPORT ANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 P ACKING LIST AND UNP ACKING THE EQUIPMENT ...

  • QUAD ESL-989 - page 2

    2 IMPORT ANT NOTES European Union Directives Quad equipment is designed to comply with the legal provisions of EU Directives 89/336/EC and 72/23/EEC. The standards which have been applied were those in force at the time of the introduction of the product. The product bears the CE mark: Compliance cannot guarantee perfect performance. In the very ra ...

  • QUAD ESL-989 - page 3

    3 INTRODUCTION The Quad ESL loudspeaker is a full range electrostatic loudspeaker doublet. It consists of a very light electrically polarised diaphragm suspended between two sets of concentric annular electrodes. Signal is fed to the electrodes via sequential delay lines causing the diaphragm to move and the motion of the diaphragm produces a sound ...

  • QUAD ESL-989 - page 4

    4 GUARANTEE AND PRODUCT REGISTRA TION Y our Quad equipment is guaranteed against any defect in material and workmanship for one year from the date of purchase (proof of purchase required). We ask you to complete and return the enclosed W arranty Registration Form (UK). This will also enable us to keep you informed of future Quad products. Within th ...

  • QUAD ESL-989 - page 5

    INST ALLA TION The ESL loudspeaker requires an energising voltage for operation and therefore needs to be connected to an AC power supply . Checking the AC power supply The ESL loudspeaker is designed to operate on one range of AC power supply only , 50/60 Hz. Either 200-240V or 100/120V . The correct operating voltage is clearly marked on the base ...

  • QUAD ESL-989 - page 6

    6 Each loudspeaker should be connected to its appropriate amplifier output so that the two pairs of wires are connected in the same way , to ensure that the speakers operate in phase. Switching On and Off The on/off switch has a rocker action; press the bottom to switch the ESL on and the top to switch it off. A red LED next to the on/off switch in ...

  • QUAD ESL-989 - page 7

    7 When experimenting, it is preferable to use good recordings or works with which you are familiar in the concert hall or good quality speech. The ESL loudspeaker , being a dipole source, has considerable advantages over conventional loudspeakers in terms of room placement. No energy is radiated in the plane of the diaphragm and as a consequence, t ...

  • QUAD ESL-989 - page 8

    8 CARE AND MAINTENANCE The grille cloth may be cleaned with a soft brush or a hand held vacuum cleaner . They are protected against the ingress of dust etc. Periodic servicing at two year intervals is recommended to keep your speakers in pristine condition. Great care has gone into the selection of materials to ensure long term stability under a wi ...

  • QUAD ESL-989 - page 9

    9 ESL-988 SPECIFICA TIONS All measurements made with a 230V AC supply . Maximum output 2 N/m 2 at 2m on axis Sensitivity 1.5m bar per volt referred to 1m. (86 dB/2.83V rms) Impedance 8 Ohms nominal Maximum Continuous input voltage (rms): 10V Programme peak for undistorted output: 40V Permitted peak input: 55V Directivity Index 125 Hz 5.0 dB 500 Hz ...

  • QUAD ESL-989 - page 10

    10 ESL-989 SPECIFICA TIONS All measurements made with a 230V AC supply . Maximum output 2 N/m 2 at 2m on axis Sensitivity 1.5m bar per volt referred to 1m. (86 dB/2.83V rms) Impedance 8 Ohms nominal Maximum Continuous input voltage (rms): 10V Programme peak for undistorted output: 40V Permitted peak input: 55V Directivity Index 125 Hz 5.0 dB 500 Hz ...

  • QUAD ESL-989 - page 11

    IAG House Sovereign Court Ermine Business P ark Huntingdon Cambs PE29 6XU England T elephone: +44 (0) 1480 447700 Facsimile: +44 (0) 1480 431767 email: info@quad-hifi.co.uk website: www .quad-hifi.co.uk ESLmanual Feb02 11/02/04 9:14 AM Page 1 ...

  • QUAD ESL-989 - page 12

    Instruction Man ual for Electr ostatic Loudspeakers ESL 988 and ESL 989 ESLmanual Feb02 11/02/04 9:14 AM Page 2 ...

Manufacturer QUAD Category Speaker

Documents that we receive from a manufacturer of a QUAD ESL-989 can be divided into several groups. They are, among others:
- QUAD technical drawings
- ESL-989 manuals
- QUAD product data sheets
- information booklets
- or energy labels QUAD ESL-989
All of them are important, but the most important information from the point of view of use of the device are in the user manual QUAD ESL-989.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals QUAD ESL-989, service manual, brief instructions and user manuals QUAD ESL-989. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product QUAD ESL-989.

Similar manuals

A complete manual for the device QUAD ESL-989, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use QUAD ESL-989 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of QUAD ESL-989.

A complete QUAD manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual QUAD ESL-989 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the QUAD ESL-989, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the QUAD ESL-989, that we can find in the current document
3. Tips how to use the basic functions of the device QUAD ESL-989 - which should help us in our first steps of using QUAD ESL-989
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with QUAD ESL-989
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of QUAD ESL-989 in a specific country, if it was not possible to solve the problem on our own.

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