Bowers & Wilkins 803: Français

if the links are left in place, may cause

previous storage conditions and how it is

Français

damage to the amplifier by shorting its

used. As a guide, allow up to a week for

output terminals.

the temperature effects to stabilise and 15

hours of average use for the mechanical

Garantie limitée

Fine tuning

parts to attain their intended design

characteristics.

Before fine tuning, double check that all the

Cher Client,

connections in the installation are correct

Ancillary equipment

Bienvenue à B&W.

and secure.

Speakers of this ability deserve signals of

Ce produit a été conçu et fabriqué en vertu

Moving the speakers further from the walls

the highest quality. Choose your electronic

des normes de qualité les plus rigoureuses.

will reduce the general level of bass. Space

equipment and interconnecting cables with

Toutefois, en cas de problème, B&W

behind the speakers also helps to create an

care. We can give guidance on what to

Loudspeakers et ses distributeurs

impression of depth. Conversely, moving

look for when choosing ancillary

nationaux garantissent une main d’œuvre

the speakers closer to the walls will

equipment, but cannot recommend specific

(exclusions possibles) et des pièces de

increase the level of bass.

items. The standards of such products are

rechange gratuites dans tout pays desservi

If the bass is uneven with frequency it is

improving all the time and your dealer will

par un distributeur agréé de B&W.

usually due to the excitation of resonance

be able to demonstrate a variety of suitable

Cette garantie limitée est valide pour une

modes in the room. Even small changes in

up-to-date products.

période de cinq ans à compter de la date

the position of the speakers or the listeners

In the specification we recommend a range

d’achat ou une période de deux ans pour

can have a profound effect on how these

of amplifier powers. The higher figure is

les composants électroniques, y compris

resonances affect the sound. Try mounting

defined by the power handling capability of

les haut-parleurs amplifiés.

the speakers along a different wall. Even

the speaker. When calculating the power

moving large pieces of furniture can have

Conditions

handling, it is assumed that the amplifier is

an effect.

not run into clipping, which distorts the

1 La garantie est limitée à la réparation

If the central image is poor, try moving the

frequency power spectrum of the signal,

de l’équipement. Les frais de transport

speakers closer together or toeing them in

and that the signal is normal programme

ou autres, les risques associés à

so they point at or just in front of the

material. Test tones from oscillators and the

l’enlèvement, au transport et à

listeners. (figure 4)

like are not applicable. The lower figure is

l’installation des produits ne sont pas

the minimum we consider necessary to

couverts par cette garantie.

If the sound is too harsh, increase the

achieve reasonable listening levels without

amount of soft furnishing in the room (for

2 La garantie est exclusivement réservée

audible distortion in the smaller room (less

example use heavier curtains), or reduce it

3

au propriétaire d’origine et ne peut pas

than 60 m

or 2000 cu ft). The higher the

if the sound is dull and lifeless.

être transférée.

power you use, the less likely you are to

Test for flutter echoes by clapping your

experience amplifier clipping. You can often

3 Cette garantie ne s’applique qu’aux

hands and listening for rapid repetitions.

tell how good an amplifier is at driving

produits faisant l’objet de vices de

Reduce them by the use of irregular

complex speaker loads by looking at its

matériaux et/ou de construction au

shaped surfaces such as bookshelves and

power rating into both 4Ω and 8Ω loads.

moment de l’achat et ne sera pas

large pieces of furniture.

The nearer the ratio is to 2:1 the better, as

applicable dans les cas suivants :

it indicates a good current capability.

Ensure the speakers stand firmly on the

a détériorations entraînées par une

floor. Whenever possible fit the spike feet

In order to reduce the effect the cable has

installation, connexion ou un emballage

supplied after you have optimised the

on the frequency response of the speaker

incorrect,

positioning. They are designed to pierce

to inaudible levels, the impedance of the

b. détériorations entraînées par un usage

through carpeting to the floor surface.

cable at all frequencies (measuring both

autre que l’usage correct décrit dans le

Initially, screw the lock nuts fully onto the

positive and negative conductors in series)

manuel de l’utilisateur, la négligence,

spikes and screw the spikes fully into the

should be kept as low as possible and

des modifications ou l’usage de pièces

threaded inserts in the base of the speaker.

certainly below 0.1Ω. At low frequencies,

qui ne sont pas fabriquées ou agréées

If the cabinet rocks, unscrew the

the DC resistance of the cable is the

par B&W,

appropriate spikes until the speaker stands

dominant factor and you should choose a

firmly on the floor and lock them in place

gauge of wire sufficient to achieve the

c. détériorations entraînées par un

by tightening the lock nuts against the

impedance requirements over the length of

équipement auxiliaire défectueux ou

base. If you do not have a carpet, use a

cable you need to use. At mid and high

qui ne convient pas,

protective disc under the spikes to protect

frequencies the inductive component of the

d. détériorations résultant de : accidents,

the floor surface.

impedance can dominate the DC

foudre, eau, chaleur, guerre, troubles

resistance. This and other properties

For the most discerning listening, remove

de l’ordre public ou autre cause ne

influenced by the detailed construction of

the cloth covered grille as described below

relevant pas du contrôle raisonnable de

the cable become important. Ask your

in the section “Aftercare”. The tweeter is

B&W ou de ses distributeurs agréés,

dealer for advice on the best cable for your

very delicate and its grille should be left in

needs.

e Les produits dont le numéro de série a

position for protection. For this reason the

été modifié, effacé, éliminé ou rendu

grille retaining ring is designed to provide

Aftercare

illisible,

the optimum acoustic environment for the

unit and the response is less smooth with

The cabinet surface usually only requires

f. les produits qui ont été réparés ou

the grille removed.

dusting. If you wish to use an aerosol

modifiés par une personne non

cleaner, remove the grille first by gently

autorisée.

Running-in period

pulling it away from the cabinet. Spray onto

4 Cette garantie vient en complément à

the cleaning cloth, not directly onto the

The performance of the speaker will change

toute obligation juridique nationale /

cabinet. The grille fabric may be cleaned

subtly during the initial listening period. If

régionale des revendeurs ou

with a normal clothes brush whilst the grille

the speaker has been stored in a cold

distributeurs nationaux et n’affecte pas

is detached from the cabinet.

environment, the damping compounds and

vos droits statutaires en tant que

suspension materials of the drive units will

The surface of the tweeter housing will

client.

take some time to recover their correct

benefit from the use of an anti-static

Comment faire une réclamation

mechanical properties. The drive unit

cleaner. Do not attempt to remove the

en vertu de la garantie

suspensions will also loosen up during the

tweeter grille.

first hours of use. The time taken for the

Veuillez respecter la procédure ci-dessous,

Avoid touching the drive unit diaphragms,

speaker to achieve its intended

si vous souhaitez faire une réclamation

especially the tweeter, as damage may

performance will vary depending on

sous garantie :

result.

2