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QUAD ESL 989 vintage Instruction Manual

Other manuals for ESL 989 vintage: Brochure & Specs, Brochure & Specs, Manual
Manual is about: L2 Series Loudspeakers

Summary of ESL 989 vintage

  • Page 1

    1 esl-988 & esl-989 electrostatic loudspeakers instruction manual contents important notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 2

    2 important 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 can...

  • 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 mov...

  • Page 4

    4 guarantee and product registration your 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 warranty registration form (uk). This will also enable us to keep ...

  • Page 5

    Installation 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 op...

  • 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 swit...

  • 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 t...

  • 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 m...

  • Page 9

    9 esl-988 specifications 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 in...

  • Page 10

    10 esl-989 specifications 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 i...

  • Page 11

    Iag house sovereign court ermine business park huntingdon cambs pe29 6xu england telephone: +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.

  • Page 12

    Instruction manual for electrostatic loudspeakers esl 988 and esl 989 eslmanual feb02 11/02/04 9:14 am page 2.