KEF Audio 204/2c manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Go to page of

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of KEF Audio 204/2c, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of KEF Audio 204/2c one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of KEF Audio 204/2c. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of KEF Audio 204/2c should contain:
- informations concerning technical data of KEF Audio 204/2c
- name of the manufacturer and a year of construction of the KEF Audio 204/2c item
- rules of operation, control and maintenance of the KEF Audio 204/2c item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of KEF Audio 204/2c alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of KEF Audio 204/2c, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the KEF Audio service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of KEF Audio 204/2c.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the KEF Audio 204/2c item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    OWNERS MANU A L Model 201/2 Model 202/2c Model 203/2 Model 204/2c Model 205/2 Model 206/2ds Model 207/2 Thank you f or purchasing KEF Ref erence Series loudspeak ers. These ha ve been designed to faithfully r eproduce high quality sound o ver many years of use and should pr ovide realistic repr oduction of music and speech. Please tak e a little ti[...]

  • Page 2

    2 3 Impor tant Saf ety Information 1 General Car e of Y our System 1 Contents 3 Intr oduction 5 Overview of Common Featur es 6 Model 207/2 7 Model 205/2 7 Model 203/2 7 Model 201/2 8 Model 206/2ds 8 Model 202/2c 8 Model 204/2c 8 Installation and Operation 9 Unpacking, Handling and Aftercar e 9 Adjusting the Feet and/or Spik es 10 Loudspeak er Place[...]

  • Page 3

    5 Since its formation in 1961, KEF has pioneer ed many inno vations in loudspeak er technolog y and design. Y our new Refer ence Series loudspeakers contain one of the latest of these advances - the KEF ‘Project Austin’ Uni-Q driv er arra y . In this innovativ e KEF design, not only ar e the mid and high-frequency driv ers on the same axis (co-[...]

  • Page 4

    6 7 Four driv e units in a three-wa y configuration are employ ed in the Model 205/2. The single Uni-Q driver ar ra y for upper mid-range and high frequencies with ultrasonic extension, and a pair of 200mm (8in.) drive units in IDL configuration for low fr equencies. This system works optimally in medium to large rooms wher e its controlled and ext[...]

  • Page 5

    9 8 These Refer ence Series loudspeak ers are pack ed one loudspeak er per car ton. Prior to unpacking, please ensure that the serial n umbers of the loudspeak ers supplied match each other . Then, unpack the loudspeak ers carefully and inspect for an y sign of damage . Y our loudspeak ers left KEF in perfect condition. If any damage is a pparent, [...]

  • Page 6

    11 10 Under normal circumstances y our loudspeakers will be commissioned by y our retailer or consultant, who will ha ve been trained in their installation by KEF . KEF strongl y recommend that you do not attempt to lev el your loudspeak ers single-handed. Recruit the assistance of another adult - or consult an authorised KEF Refer ence outlet for [...]

  • Page 7

    13 12 2m (6' 8") 2m (6' 8") Loudspeak er P ositioning[...]

  • Page 8

    14 15 All connections should be made with the amplifier switched OFF . Ensure the integrity of all connections prior to switching the amplifier ON. KEF Refer ence Series loudspeak ers are fitted with purpose designed gold-plated T ri-wire/T ri-amp terminals which will accept bare wir e , spade or 4mm connectors. Most good quality loudspeak er cable[...]

  • Page 9

    17 16 HF Adjustment The ‘HF Adjust’ A and B terminals control the high frequency output of the loudspeak er . This facility allows the user to adjust the ‘brightness’ of the loudspeak er to suit listening room acoustics, partnering electr onics and personal taste. Four settings for tw eeter output level ar e possible +0.75, 0 (‘flat’), [...]

  • Page 10

    T ri-wiring/T ri-amping T erminals The three sets of input terminals ar e linked by a high quality shorting cable . Removal of this cable will allow the LF , MF and HF sections to be connected separately , either by a parallel connection from one amplifier (kno wn as tri-wiring) or to separate pow er amplifiers driven fr om the same pre-amplifier ([...]

  • Page 11

    21 20 x4 x2 Centre loudspeak er single wire connections Centre loudspeak er bi-wire connections Centre loudspeak er tri-wire connections x8 x4 Loudspeak er bi-amplification connections Loudspeak er tri-amplification connections Loudspeak er single amplification connections[...]

  • Page 12

    23 22 x4 x2 Centre loudspeak er single amplification connections Centre loudspeak er bi-amplification connections Centre loudspeak er tri-amplification connections Poor quality cables can seriousl y compromise the ov erall sound of your hi-fi system. KEF recommends that high quality loudspeak er cable be used for connecting y our Reference Series l[...]

  • Page 13

    25 24 Specifications Design : Bass reflex f our -way floorstanding loudspeak er , magnetically shielded. Drive Unit Ar ray : 2 x 250mm (10in.) LF 1 x 250mm (10in) LMF 1 x 165mm (6.5in.) Uni-Q MF including a 25mm (1in.) titanium HF Fr equency Response : (@ 15° horizontally off axis ± 3dB) 40Hz - 60kHz Cr osso ver F requencies : 120Hz, 350Hz, 2.3kH[...]

  • Page 14

    27 26 Design : Closed box thr ee-way dipole loudspeak er , magnetically shielded. Drive Unit Ar ray : 1 x 200mm (8in.) LF 2 x 165mm (6.5in.) Uni-Q MF including 2 x 25mm (1in.) titanium HF Fr equency Response : (@ 15° horizontally off axis ± 3dB) 65Hz - 60kHz Cr osso ver F requencies : 250Hz, 2.3kHz Amplifier Requirements : 50 - 200W Sensitivity :[...]

  • Page 15

    29 KEF was founded in 1961 by an electrical engineer named Ra ymond Cooke in a Nissen Hut on the premises of a metal working operation called K ent Engineering & Foundry (hence KEF), on the banks of the River Medwa y , near Maidstone in K ent. From the beginning KEF was destined to become a company with a flair f or the unusual and contro versi[...]

  • Page 16

    31 30 By 1973 the company was de veloping the concept of computer assisted ‘T otal System’ design, at a time when the world’ s v er y first 4-bit micropr ocessor was still in its infancy . KEF engineers, using a given set of parameters, could for the first time actually “see” what the response characteristics of a loudspeak er system woul[...]

  • Page 17

    33 KEF’ s acclaimed Reference Series Under new ownership in 1992 KEF Audio f ound itself equipped with new ideas, ne w personalities and new pr oducts. But the same philosophies of solid engineering and innovation to pr ovide the finest quality product a vailable at its particular price-point remained firml y at the bed-rock. In 1994 and 1995 the[...]

  • Page 18

    35 The millennium ushered in a ne w era of groundbr eaking audio innovation. Among the most important was the launch of a new Refer ence Series - the forerunner of toda y’ s design - in 2002. This redefined the benchmark for high-end loudspeak ers by incorporating signature KEF technologies such as Uni-Q and the ‘pod’ concept. The decade had [...]

  • Page 19

    GP Acoustics (UK) Ltd., Eccleston Road, T ovil, Maidstone , K ent, ME15 6QP U.K. T elephone: + 44 (0)1622 672261 Fax: + 44 (0)1622 750653 GP Acoustics (US), Inc., 10 Timber Lane , Marlbor o, Ne w Jersey 07746 U.S.A. T elephone: +(1) 732 683 2356 Fax: +(1) 732 683 2358 GP Acoustics GmbH, Heinrichstraße 51, D-44536 Lünen, Deutschland. T elephone: +[...]